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<div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Replacing time zones with UTC</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Globalize plainlinks metadata ambox ambox-content ambox-globalize" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="Globe icon." src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Ambox_globe_content.svg/48px-Ambox_globe_content.svg.png" decoding="async" width="48" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Ambox_globe_content.svg/73px-Ambox_globe_content.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Ambox_globe_content.svg/97px-Ambox_globe_content.svg.png 2x" data-file-width="350" data-file-height="290" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">The examples and perspective in this article <b>deal primarily with the United States and do not represent a <a href="/wiki/Wikipedia:WikiProject_Countering_systemic_bias" title="Wikipedia:WikiProject Countering systemic bias">worldwide view</a> of the subject</b>.<span class="hide-when-compact"> You may <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Abolition_of_time_zones&action=edit">improve this article</a>, discuss the issue on the <a href="/wiki/Talk:Abolition_of_time_zones" title="Talk:Abolition of time zones">talk page</a>, or <a href="/wiki/Wikipedia:Article_wizard" title="Wikipedia:Article wizard">create a new article</a>, as appropriate.</span> <span class="date-container"><i>(<span class="date">August 2021</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:World_Time_Zones_Map.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/88/World_Time_Zones_Map.png/300px-World_Time_Zones_Map.png" decoding="async" width="300" height="162" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/88/World_Time_Zones_Map.png/450px-World_Time_Zones_Map.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/88/World_Time_Zones_Map.png/600px-World_Time_Zones_Map.png 2x" data-file-width="4000" data-file-height="2157" /></a><figcaption>Time zones of the world</figcaption></figure> <p>Various proposals have been made to replace the system of <a href="/wiki/Time_zone" title="Time zone">time zones</a> with <a href="/wiki/Coordinated_Universal_Time" title="Coordinated Universal Time">Coordinated Universal Time</a> (UTC) as a local time. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Abolition_of_time_zones&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Time_zone#History" title="Time zone">Time zone § History</a></div> <p>For most of history, the position of the sun was used for timekeeping. During the 19th century, most towns kept their own local time. The standardization of time zones started in 1884 in the US.<sup id="cite_ref-:0_1-0" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Proposals">Proposals</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Abolition_of_time_zones&action=edit&section=2" title="Edit section: Proposals"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1224211176">.mw-parser-output .quotebox{background-color:#F9F9F9;border:1px solid #aaa;box-sizing:border-box;padding:10px;font-size:88%;max-width:100%}.mw-parser-output .quotebox.floatleft{margin:.5em 1.4em .8em 0}.mw-parser-output .quotebox.floatright{margin:.5em 0 .8em 1.4em}.mw-parser-output .quotebox.centered{overflow:hidden;position:relative;margin:.5em auto .8em auto}.mw-parser-output .quotebox.floatleft span,.mw-parser-output .quotebox.floatright span{font-style:inherit}.mw-parser-output .quotebox>blockquote{margin:0;padding:0;border-left:0;font-family:inherit;font-size:inherit}.mw-parser-output .quotebox-title{text-align:center;font-size:110%;font-weight:bold}.mw-parser-output .quotebox-quote>:first-child{margin-top:0}.mw-parser-output .quotebox-quote:last-child>:last-child{margin-bottom:0}.mw-parser-output .quotebox-quote.quoted:before{font-family:"Times New Roman",serif;font-weight:bold;font-size:large;color:gray;content:" “ ";vertical-align:-45%;line-height:0}.mw-parser-output .quotebox-quote.quoted:after{font-family:"Times New Roman",serif;font-weight:bold;font-size:large;color:gray;content:" ” ";line-height:0}.mw-parser-output .quotebox .left-aligned{text-align:left}.mw-parser-output .quotebox .right-aligned{text-align:right}.mw-parser-output .quotebox .center-aligned{text-align:center}.mw-parser-output .quotebox .quote-title,.mw-parser-output .quotebox .quotebox-quote{display:block}.mw-parser-output .quotebox cite{display:block;font-style:normal}@media screen and (max-width:640px){.mw-parser-output .quotebox{width:100%!important;margin:0 0 .8em!important;float:none!important}}</style><div class="quotebox pullquote floatright" style=";"> <blockquote class="quotebox-quote left-aligned" style=""> <p>The time-zone map is a <a href="https://en.wiktionary.org/wiki/hodgepodge" class="extiw" title="wikt:hodgepodge">hodgepodge</a> — a <a href="/wiki/Jigsaw_puzzle" title="Jigsaw puzzle">jigsaw puzzle</a> by <a href="/wiki/Salvador_Dal%C3%AD" title="Salvador Dalí">Dalí</a>. </p> </blockquote> <p style="padding-bottom: 0;"><cite class="left-aligned" style=""><a href="/wiki/James_Gleick" title="James Gleick">James Gleick</a>, <a href="/wiki/The_New_York_Times" title="The New York Times">The New York Times</a><sup id="cite_ref-jamesgleick_2-0" class="reference"><a href="#cite_note-jamesgleick-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></cite></p> </div> <p><a href="/wiki/Arthur_C._Clarke" title="Arthur C. Clarke">Arthur C. Clarke</a> proposed the use of a single time zone in 1976.<sup id="cite_ref-jamesgleick_2-1" class="reference"><a href="#cite_note-jamesgleick-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Attempts to abolish time zones date back half a century<sup id="cite_ref-:0_1-1" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> and include the <a href="/wiki/Swatch_Internet_Time" title="Swatch Internet Time">Swatch Internet Time</a>. <a href="/wiki/Economics" title="Economics">Economics</a> professor <a href="/wiki/Steve_Hanke" title="Steve Hanke">Steve Hanke</a> and <a href="/wiki/Astrophysics" title="Astrophysics">astrophysics</a> professor <a href="/wiki/Richard_Conn_Henry" title="Richard Conn Henry">Dick Henry</a> at <a href="/wiki/Johns_Hopkins_University" title="Johns Hopkins University">Johns Hopkins University</a> have been proponents of the concept and have integrated it in their <a href="/wiki/Hanke%E2%80%93Henry_Permanent_Calendar" title="Hanke–Henry Permanent Calendar">Hanke–Henry Permanent Calendar</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Usage">Usage</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Abolition_of_time_zones&action=edit&section=3" title="Edit section: Usage"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>UTC as a universal time zone is already used by airline operators around the world<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> and other international settings where time coordination is especially critical. This includes military operations, the US <a href="/wiki/National_Oceanic_and_Atmospheric_Administration" title="National Oceanic and Atmospheric Administration">National Oceanic and Atmospheric Administration</a> and the <a href="/wiki/International_Space_Station" title="International Space Station">International Space Station</a>.<sup id="cite_ref-:1_8-0" class="reference"><a href="#cite_note-:1-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> Within the United States, some have cited effective international use of UTC in certain industries as evidence that a permanent national time zone would work within the United States, a change the <a href="/wiki/United_States_Secretary_of_Transportation" title="United States Secretary of Transportation">Secretary of Transportation</a> would have the authority to make.<sup id="cite_ref-:1_8-1" class="reference"><a href="#cite_note-:1-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Advantages">Advantages</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Abolition_of_time_zones&action=edit&section=4" title="Edit section: Advantages"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>The same time is used globally, which removes the requirement of calculations between different zones.</li> <li>Possible health benefits as people who live on the eastern side of a time zone are out of sync with the <a href="/wiki/Circadian_rhythm" title="Circadian rhythm">circadian rhythms</a>.<sup id="cite_ref-:0_1-2" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading3"><h3 id="Disadvantages">Disadvantages</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Abolition_of_time_zones&action=edit&section=5" title="Edit section: Disadvantages"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>The date will change during daylight hours in parts of the <a href="/wiki/Americas" title="Americas">Americas</a> and <a href="/wiki/Asia-Pacific" class="mw-redirect" title="Asia-Pacific">Asia-Pacific</a>.</li> <li>Requires changes in linguistic terminology related to time.</li> <li>Conceptually, time zones would still be in effect as different regions would still carry out activities such as <a href="/wiki/Business_hours" title="Business hours">business hours</a>, <a href="/wiki/Lunch" title="Lunch">lunch</a>, <a href="/wiki/School" title="School">school</a>, etc. at different UTC times, essentially trading one system for a tantamount one.</li> <li>The change would likely require a high level of effort from software developers and IT admins around the world, as nearly every modern software system needs to use time information in some fashion.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li></ul> <p>For example, at 08:00 (8 AM), with UTC±0 as a worldwide standard, the sky in the <a href="/wiki/Eastern_United_States" title="Eastern United States">Eastern United States</a> would look how it normally does at 03:00 (3 AM), and in <a href="/wiki/China" title="China">China</a> would look how it does at 16:00 (4 PM). However, in the <a href="/wiki/United_Kingdom" title="United Kingdom">United Kingdom</a>, the sky would look the exact same as it normally does at 08:00 (8 AM). </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Abolition_of_time_zones&action=edit&section=6" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><i><a href="/wiki/Eastern_Standard_Tribe" title="Eastern Standard Tribe">Eastern Standard Tribe</a></i></li> <li><a href="/wiki/Calendar_reform" title="Calendar reform">Calendar reform</a></li> <li><a href="/wiki/Time_in_China" title="Time in China">Time in China</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Abolition_of_time_zones&action=edit&section=7" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-:0-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-:0_1-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.bloomberg.com/opinion/articles/2021-03-20/let-s-get-rid-of-daylight-savings-and-time-zones">"Let's Get Rid of Time Zones, Not Just Daylight Savings"</a>. <i><a href="/wiki/Bloomberg_L.P." title="Bloomberg L.P.">Bloomberg L.P.</a></i> 2021-03-20<span class="reference-accessdate">. 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Retrieved <span class="nowrap">2021-03-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=National+Public+Radio&rft.atitle=The+Day+Of+Two+Noons+%3A+Planet+Money&rft_id=https%3A%2F%2Fwww.npr.org%2F2019%2F06%2F07%2F730727038%2Fepisode-918-the-day-of-two-noons&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAbolition+of+time+zones" class="Z3988"></span></span> </li> <li id="cite_note-:1-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-:1_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:1_8-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDeal2021" class="citation journal cs1">Deal, Ryan (2021-01-01). <a rel="nofollow" class="external text" href="https://openscholarship.wustl.edu/law_lawreview/vol98/iss3/9">"It's Five O'Clock Everywhere: A Framework for the Modernization of Time"</a>. <i><a href="/wiki/Washington_University_Law_Review" title="Washington University Law Review">Washington University Law Review</a></i>. <b>98</b> (3): 911–936. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/2166-7993">2166-7993</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Washington+University+Law+Review&rft.atitle=It%27s+Five+O%27Clock+Everywhere%3A+A+Framework+for+the+Modernization+of+Time&rft.volume=98&rft.issue=3&rft.pages=911-936&rft.date=2021-01-01&rft.issn=2166-7993&rft.aulast=Deal&rft.aufirst=Ryan&rft_id=https%3A%2F%2Fopenscholarship.wustl.edu%2Flaw_lawreview%2Fvol98%2Fiss3%2F9&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAbolition+of+time+zones" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.vice.com/en/article/nney3k/meet-the-professor-that-wants-to-change-the-way-we-measure-time">"This Guy Says Getting Rid of Time Zones Will Improve Everyone's Life"</a>. <i><a href="/wiki/Vice_(magazine)" title="Vice (magazine)">Vice</a></i>. 8 March 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">2021-03-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Vice&rft.atitle=This+Guy+Says+Getting+Rid+of+Time+Zones+Will+Improve+Everyone%27s+Life&rft.date=2016-03-08&rft_id=https%3A%2F%2Fwww.vice.com%2Fen%2Farticle%2Fnney3k%2Fmeet-the-professor-that-wants-to-change-the-way-we-measure-time&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAbolition+of+time+zones" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRosehill2021" class="citation web cs1">Rosehill, Daniel (2021-10-03). <a rel="nofollow" class="external text" href="https://onezero.medium.com/the-largely-untold-story-of-how-one-guy-in-california-keeps-the-worlds-computers-on-the-right-time-a97a5493bf73">"The Largely Untold Story Of How One Guy In California Keeps The World's Computers Running On The Right Time Zone. 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magnitude</a></li> <li><a href="/wiki/Time_metrology" class="mw-redirect" title="Time metrology">Metrology</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">International standards</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Coordinated_Universal_Time" title="Coordinated Universal Time">Coordinated Universal Time</a> <ul><li><a href="/wiki/UTC_offset" title="UTC offset">offset</a></li></ul></li> <li><a href="/wiki/Universal_Time" title="Universal Time">UT</a></li> <li><a href="/wiki/%CE%94T_(timekeeping)" title="ΔT (timekeeping)">ΔT</a></li> <li><a href="/wiki/DUT1" title="DUT1">DUT1</a></li> <li><a href="/wiki/International_Earth_Rotation_and_Reference_Systems_Service" title="International Earth Rotation and Reference Systems Service">International Earth Rotation and Reference Systems Service</a></li> <li><a href="/wiki/ISO_31-1" title="ISO 31-1">ISO 31-1</a></li> <li><a href="/wiki/ISO_8601" title="ISO 8601">ISO 8601</a></li> <li><a href="/wiki/International_Atomic_Time" title="International Atomic Time">International Atomic Time</a></li> <li><a href="/wiki/12-hour_clock" title="12-hour clock">12-hour clock</a></li> <li><a href="/wiki/24-hour_clock" title="24-hour clock">24-hour clock</a></li> <li><a href="/wiki/Barycentric_Coordinate_Time" title="Barycentric Coordinate Time">Barycentric Coordinate Time</a></li> <li><a href="/wiki/Barycentric_Dynamical_Time" title="Barycentric Dynamical Time">Barycentric Dynamical Time</a></li> <li><a href="/wiki/Civil_time" title="Civil time">Civil time</a></li> <li><a href="/wiki/Daylight_saving_time" title="Daylight saving time">Daylight saving time</a></li> <li><a href="/wiki/Geocentric_Coordinate_Time" title="Geocentric Coordinate Time">Geocentric Coordinate Time</a></li> <li><a href="/wiki/International_Date_Line" title="International Date Line">International Date Line</a></li> <li><a href="/wiki/IERS_Reference_Meridian" title="IERS Reference Meridian">IERS Reference Meridian</a></li> <li><a href="/wiki/Leap_second" title="Leap second">Leap second</a></li> <li><a href="/wiki/Solar_time" title="Solar time">Solar time</a></li> <li><a href="/wiki/Terrestrial_Time" title="Terrestrial Time">Terrestrial Time</a></li> <li><a href="/wiki/Time_zone" title="Time zone">Time zone</a></li> <li><a href="/wiki/180th_meridian" title="180th meridian">180th meridian</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="9" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/Hourglass" title="Hourglass"><img alt="template illustration" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Marine_sandglass_MMM.jpg/75px-Marine_sandglass_MMM.jpg" decoding="async" width="75" height="175" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Marine_sandglass_MMM.jpg/113px-Marine_sandglass_MMM.jpg 1.5x, 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style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Absolute_space_and_time" title="Absolute space and time">Absolute space and time</a></li> <li><a href="/wiki/Spacetime" title="Spacetime">Spacetime</a></li> <li><a href="/wiki/Chronon" title="Chronon">Chronon</a></li> <li><a href="/wiki/Continuous_signal" class="mw-redirect" title="Continuous signal">Continuous signal</a></li> <li><a href="/wiki/Coordinate_time" title="Coordinate time">Coordinate time</a></li> <li><a href="/wiki/Cosmological_decade" title="Cosmological decade">Cosmological decade</a></li> <li><a href="/wiki/Discrete_time_and_continuous_time" title="Discrete time and continuous time">Discrete time and continuous time</a></li> <li><a href="/wiki/Proper_time" title="Proper time">Proper time</a></li> <li><a href="/wiki/Theory_of_relativity" title="Theory of relativity">Theory of relativity</a></li> <li><a href="/wiki/Time_dilation" title="Time dilation">Time dilation</a></li> <li><a href="/wiki/Gravitational_time_dilation" title="Gravitational time dilation">Gravitational time dilation</a></li> <li><a href="/wiki/Time_domain" title="Time domain">Time domain</a></li> <li><a href="/wiki/Time-translation_symmetry" title="Time-translation symmetry">Time-translation symmetry</a></li> <li><a href="/wiki/T-symmetry" title="T-symmetry">T-symmetry</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Horology" class="mw-redirect" title="Horology">Horology</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Clock" title="Clock">Clock</a></li> <li><a href="/wiki/Astrarium" title="Astrarium">Astrarium</a></li> <li><a href="/wiki/Atomic_clock" title="Atomic clock">Atomic clock</a></li> <li><a href="/wiki/Complication_(horology)" title="Complication (horology)">Complication</a></li> <li><a href="/wiki/History_of_timekeeping_devices" title="History of timekeeping devices">History of timekeeping devices</a></li> <li><a href="/wiki/Hourglass" title="Hourglass">Hourglass</a></li> <li><a href="/wiki/Marine_chronometer" title="Marine chronometer">Marine chronometer</a></li> <li><a href="/wiki/Marine_sandglass" title="Marine sandglass">Marine sandglass</a></li> <li><a href="/wiki/Radio_clock" title="Radio clock">Radio clock</a></li> <li><a href="/wiki/Watch" title="Watch">Watch</a> <ul><li><a href="/wiki/Stopwatch" title="Stopwatch">stopwatch</a></li></ul></li> <li><a href="/wiki/Water_clock" title="Water clock">Water clock</a></li> <li><a href="/wiki/Sundial" title="Sundial">Sundial</a></li> <li><a href="/wiki/Dialing_scales" title="Dialing scales">Dialing scales</a></li> <li><a href="/wiki/Equation_of_time" title="Equation of time">Equation of time</a></li> <li><a href="/wiki/History_of_sundials" title="History of sundials">History of sundials</a></li> <li><a href="/wiki/Schema_for_horizontal_dials" title="Schema for horizontal dials">Sundial markup schema</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Calendar" title="Calendar">Calendar</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gregorian_calendar" title="Gregorian calendar">Gregorian</a></li> <li><a href="/wiki/Hebrew_calendar" title="Hebrew calendar">Hebrew</a></li> <li><a href="/wiki/Hindu_calendar" title="Hindu calendar">Hindu</a></li> <li><a href="/wiki/Holocene_calendar" title="Holocene calendar">Holocene</a></li> <li><a href="/wiki/Islamic_calendar" title="Islamic calendar">Islamic</a> (lunar Hijri)</li> <li><a href="/wiki/Julian_calendar" title="Julian calendar">Julian</a></li> <li><a href="/wiki/Solar_Hijri_calendar" title="Solar Hijri calendar">Solar Hijri</a></li> <li><a href="/wiki/Astronomical_year_numbering" title="Astronomical year numbering">Astronomical</a></li> <li><a href="/wiki/Dominical_letter" title="Dominical letter">Dominical letter</a></li> <li><a href="/wiki/Epact" title="Epact">Epact</a></li> <li><a href="/wiki/Equinox" title="Equinox">Equinox</a></li> <li><a href="/wiki/Intercalation_(timekeeping)" title="Intercalation (timekeeping)">Intercalation</a></li> <li><a href="/wiki/Julian_day" title="Julian day">Julian day</a></li> <li><a href="/wiki/Leap_year" title="Leap year">Leap year</a></li> <li><a href="/wiki/Lunar_calendar" title="Lunar calendar">Lunar</a></li> <li><a href="/wiki/Lunisolar_calendar" title="Lunisolar calendar">Lunisolar</a></li> <li><a href="/wiki/Solar_calendar" title="Solar calendar">Solar</a></li> <li><a href="/wiki/Solstice" title="Solstice">Solstice</a></li> <li><a href="/wiki/Tropical_year" title="Tropical year">Tropical year</a></li> <li><a href="/wiki/Determination_of_the_day_of_the_week" title="Determination of the day of the week">Weekday determination</a></li> <li><a href="/wiki/Names_of_the_days_of_the_week" title="Names of the days of the week">Weekday names</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Archaeology and geology</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chronological_dating" title="Chronological dating">Chronological dating</a></li> <li><a href="/wiki/Geologic_time_scale" title="Geologic time scale">Geologic time scale</a></li> <li><a href="/wiki/International_Commission_on_Stratigraphy" title="International Commission on Stratigraphy">International Commission on Stratigraphy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Astronomical_chronology" title="Astronomical chronology">Astronomical chronology</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Galactic_year" title="Galactic year">Galactic year</a></li> <li><a href="/wiki/Nuclear_timescale" title="Nuclear timescale">Nuclear timescale</a></li> <li><a href="/wiki/Precession" title="Precession">Precession</a></li> <li><a href="/wiki/Sidereal_time" title="Sidereal time">Sidereal time</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other <a href="/wiki/Unit_of_time" title="Unit of time">units of time</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Instant" title="Instant">Instant</a></li> <li><a href="/wiki/Flick_(time)" title="Flick (time)">Flick</a></li> <li><a href="/wiki/Shake_(unit)" title="Shake (unit)">Shake</a></li> <li><a href="/wiki/Jiffy_(time)" title="Jiffy (time)">Jiffy</a></li> <li><a href="/wiki/Second" title="Second">Second</a></li> <li><a href="/wiki/Minute" title="Minute">Minute</a></li> <li><a href="/wiki/Moment_(unit)" title="Moment (unit)">Moment</a></li> <li><a href="/wiki/Hour" title="Hour">Hour</a></li> <li><a href="/wiki/Day" title="Day">Day</a></li> <li><a href="/wiki/Week" title="Week">Week</a></li> <li><a href="/wiki/Fortnight" title="Fortnight">Fortnight</a></li> <li><a href="/wiki/Month" title="Month">Month</a></li> <li><a href="/wiki/Year" title="Year">Year</a></li> <li><a href="/wiki/Olympiad" title="Olympiad">Olympiad</a></li> <li><a href="/wiki/Lustrum" title="Lustrum">Lustrum</a></li> <li><a href="/wiki/Decade" title="Decade">Decade</a></li> <li><a href="/wiki/Century" title="Century">Century</a></li> <li><a href="/wiki/Saeculum" title="Saeculum">Saeculum</a></li> <li><a href="/wiki/Millennium" title="Millennium">Millennium</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related topics</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chronology" title="Chronology">Chronology</a></li> <li><a href="/wiki/Duration_(philosophy)" title="Duration (philosophy)">Duration</a> <ul><li><a href="/wiki/Duration_(music)" title="Duration (music)">music</a></li></ul></li> <li><a href="/wiki/Mental_chronometry" title="Mental chronometry">Mental chronometry</a></li> <li><a href="/wiki/Decimal_time" title="Decimal time">Decimal time</a></li> <li><a href="/wiki/Metric_time" title="Metric time">Metric time</a></li> <li><a href="/wiki/System_time" title="System time">System time</a></li> <li><a href="/wiki/Time_metrology" class="mw-redirect" title="Time metrology">Time metrology</a></li> <li><a href="/wiki/Time_value_of_money" title="Time value of money">Time value of money</a></li> <li><a href="/wiki/Timekeeper" title="Timekeeper">Timekeeper</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Coordinated_Universal_Time_(UTC)" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:UTC_time_offsets" title="Template:UTC time offsets"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:UTC_time_offsets" title="Template talk:UTC time offsets"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:UTC_time_offsets" title="Special:EditPage/Template:UTC time offsets"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Coordinated_Universal_Time_(UTC)" style="font-size:114%;margin:0 4em"><a href="/wiki/Coordinated_Universal_Time" title="Coordinated Universal Time">Coordinated Universal Time</a> (UTC)</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><span class="wrap"><a href="/wiki/UTC_offset" title="UTC offset">UTC offset</a> for <a href="/wiki/Standard_time" title="Standard time">standard time</a> and <a href="/wiki/Daylight_saving_time" title="Daylight saving time">Daylight saving time</a> (DST)<br /><br /><i>Italics: historical or unofficial</i></span></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/180th_meridian" title="180th meridian">180°</a> to <a href="/wiki/90th_meridian_west" title="90th meridian west">90°W</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/UTC%E2%88%9212:00" title="UTC−12:00">−12:00</a></li> <li><a href="/wiki/UTC%E2%88%9211:00" title="UTC−11:00">−11:00</a></li> <li><i><a href="/wiki/UTC%E2%88%9210:30" title="UTC−10:30">−10:30</a></i></li> <li><a href="/wiki/UTC%E2%88%9210:00" title="UTC−10:00">−10:00</a></li> <li><a href="/wiki/UTC%E2%88%9209:30" title="UTC−09:30">−09:30</a></li> <li><a href="/wiki/UTC%E2%88%9209:00" title="UTC−09:00">−09:00</a></li> <li><i><a href="/wiki/UTC%E2%88%9208:30" title="UTC−08:30">−08:30</a></i></li> <li><a href="/wiki/UTC%E2%88%9208:00" title="UTC−08:00">−08:00</a></li> <li><a href="/wiki/UTC%E2%88%9207:00" title="UTC−07:00">−07:00</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/90th_meridian_west" title="90th meridian west">90°W</a> to <a href="/wiki/IERS_Reference_Meridian" title="IERS Reference Meridian">0°</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/UTC%E2%88%9206:00" title="UTC−06:00">−06:00</a></li> <li><a href="/wiki/UTC%E2%88%9205:00" title="UTC−05:00">−05:00</a></li> <li><i><a href="/wiki/UTC%E2%88%9204:30" title="UTC−04:30">−04:30</a></i></li> <li><a href="/wiki/UTC%E2%88%9204:00" title="UTC−04:00">−04:00</a></li> <li><a href="/wiki/UTC%E2%88%9203:30" title="UTC−03:30">−03:30</a></li> <li><a href="/wiki/UTC%E2%88%9203:00" title="UTC−03:00">−03:00</a></li> <li><a href="/wiki/UTC%E2%88%9202:30" title="UTC−02:30">−02:30</a></li> <li><a href="/wiki/UTC%E2%88%9202:00" title="UTC−02:00">−02:00</a></li> <li><a href="/wiki/UTC%E2%88%9201:00" title="UTC−01:00">−01:00</a></li> <li><i><a href="/wiki/UTC%E2%88%9200:44" title="UTC−00:44">−00:44</a></i></li> <li><i><a href="/wiki/UTC%E2%88%9200:25:21" title="UTC−00:25:21">−00:25:21</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/IERS_Reference_Meridian" title="IERS Reference Meridian">0°</a> to <a href="/wiki/90th_meridian_east" title="90th meridian east">90°E</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/UTC%2B00:00" title="UTC+00:00">+00:00</a></li> <li><i><a href="/wiki/UTC%2B00:20" title="UTC+00:20">+00:20</a></i></li> <li><i><a href="/wiki/UTC%2B00:30" title="UTC+00:30">+00:30</a></i></li> <li><a href="/wiki/UTC%2B01:00" title="UTC+01:00">+01:00</a></li> <li><i><a href="/wiki/UTC%2B01:24" title="UTC+01:24">+01:24</a></i></li> <li><i><a href="/wiki/UTC%2B01:30" title="UTC+01:30">+01:30</a></i></li> <li><a href="/wiki/UTC%2B02:00" title="UTC+02:00">+02:00</a></li> <li><i><a href="/wiki/UTC%2B02:30" title="UTC+02:30">+02:30</a></i></li> <li><a href="/wiki/UTC%2B03:00" title="UTC+03:00">+03:00</a></li> <li><a href="/wiki/UTC%2B03:30" title="UTC+03:30">+03:30</a></li> <li><a href="/wiki/UTC%2B04:00" title="UTC+04:00">+04:00</a></li> <li><a href="/wiki/UTC%2B04:30" title="UTC+04:30">+04:30</a></li> <li><i><a href="/wiki/UTC%2B04:51" title="UTC+04:51">+04:51</a></i></li> <li><a href="/wiki/UTC%2B05:00" title="UTC+05:00">+05:00</a></li> <li><a href="/wiki/UTC%2B05:30" title="UTC+05:30">+05:30</a></li> <li><i><a href="/wiki/UTC%2B05:40" title="UTC+05:40">+05:40</a></i></li> <li><a href="/wiki/UTC%2B05:45" title="UTC+05:45">+05:45</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/90th_meridian_east" title="90th meridian east">90°E</a> to <a href="/wiki/180th_meridian" title="180th meridian">180°</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/UTC%2B06:00" title="UTC+06:00">+06:00</a></li> <li><a href="/wiki/UTC%2B06:30" title="UTC+06:30">+06:30</a></li> <li><a href="/wiki/UTC%2B07:00" title="UTC+07:00">+07:00</a></li> <li><i><a href="/wiki/UTC%2B07:20" title="UTC+07:20">+07:20</a></i></li> <li><i><a href="/wiki/UTC%2B07:30" title="UTC+07:30">+07:30</a></i></li> <li><a href="/wiki/UTC%2B08:00" title="UTC+08:00">+08:00</a></li> <li><i><a href="/wiki/UTC%2B08:30" title="UTC+08:30">+08:30</a></i></li> <li><i><a href="/wiki/UTC%2B08:45" title="UTC+08:45">+08:45</a></i></li> <li><a href="/wiki/UTC%2B09:00" title="UTC+09:00">+09:00</a></li> <li><a href="/wiki/UTC%2B09:30" title="UTC+09:30">+09:30</a></li> <li><i><a href="/wiki/UTC%2B09:45" title="UTC+09:45">+09:45</a></i></li> <li><a href="/wiki/UTC%2B10:00" title="UTC+10:00">+10:00</a></li> <li><a href="/wiki/UTC%2B10:30" title="UTC+10:30">+10:30</a></li> <li><a href="/wiki/UTC%2B11:00" title="UTC+11:00">+11:00</a></li> <li><i><a href="/wiki/UTC%2B11:30" title="UTC+11:30">+11:30</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/180th_meridian" title="180th meridian">180°</a> to <a href="/wiki/90th_meridian_west" title="90th meridian west">90°W</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/UTC%2B12:00" title="UTC+12:00">+12:00</a></li> <li><a href="/wiki/UTC%2B12:45" title="UTC+12:45">+12:45</a></li> <li><a href="/wiki/UTC%2B13:00" title="UTC+13:00">+13:00</a></li> <li><a href="/wiki/UTC%2B13:45" title="UTC+13:45">+13:45</a></li> <li><a href="/wiki/UTC%2B14:00" title="UTC+14:00">+14:00</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Time_zone" title="Time zone">Time zone</a> data sources</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><a href="/wiki/Tz_database" title="Tz database">tz database</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lists_of_time_zones" title="Lists of time zones">Lists of time zones</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_time_zones_by_country" title="List of time zones by country">Time zones by country</a></li> <li><a href="/wiki/List_of_UTC_offsets" title="List of UTC offsets">Time zones by UTC offset</a></li> <li><a href="/wiki/Military_time_zone" title="Military time zone">Military time zone</a></li> <li><a href="/wiki/List_of_time_zone_abbreviations" title="List of time zone abbreviations">Time zone abbreviations</a></li> <li><a href="/wiki/Daylight_saving_time_by_country" title="Daylight saving time by country">Daylight saving time by country</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related topics</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Abolition of time zones</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Abolition_of_time_zones&oldid=1256135719">https://en.wikipedia.org/w/index.php?title=Abolition_of_time_zones&oldid=1256135719</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Time_zones" title="Category:Time 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