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Articles About Calendar

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href="/calendar/what-is-a-calendar.html" class=card__link aria-label="What Is a Calendar?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/stonehenge-solstice2.jpg?1" width=150 height=84 alt="The Sun shining through the Stonehenge ancient monument." class=card__img></div><section class=card__content><h4 class=card__title>What Is a Calendar?</h4><p class=card__text>Calendar definition and meaning: Solar and lunar, tropical and sidereal&mdash;why did humans invent calendars?</p></section></a></article><article class="card card--list"><a href="/calendar/gregorian-calendar.html" class=card__link aria-label="The Gregorian Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/messy-room.jpg?1" width=150 height=84 alt="Cluttered storage room with shelves of supplies and a calendar on the wall." class=card__img></div><section class=card__content><h4 class=card__title>The Gregorian Calendar</h4><p class=card__text>The Gregorian calendar is the internationally accepted civil calendar. It was first adopted in 1582.</p></section></a></article><article class="card card--list"><a href="/calendar/julian-calendar.html" class=card__link aria-label="The Julian Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/julius-caesar-bust.jpg?1" width=150 height=84 title="Julius Caesar bust" alt="Ancient Roman General Julius Caesar" class=card__img></div><section class=card__content><h4 class=card__title>The Julian Calendar</h4><p class=card__text>The Julian calendar reformed the ancient Roman calendar and consists of three cycles of 365-day years followed by a 366-day leap year.</p></section></a></article><article class="card card--list"><a href="/calendar/hindu-calendar.html" class=card__link aria-label="The Hindu Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/holi-india.jpg?1" width=150 height=84 alt="Photo of a dancing man, covered in colorful powder" class=card__img></div><section class=card__content><h4 class=card__title>The Hindu Calendar</h4><p class=card__text>Hindus use this calendar to determine the dates of festivals.</p></section></a></article><article class="card card--list"><a href="/calendar/buddhist-calendar.html" class=card__link aria-label="The Buddhist Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/magha-puja-buddhist.jpg?1" width=150 height=84 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>The Buddhist Calendar</h4><p class=card__text>Buddhists use a lunisolar calendar system. How does it work?</p></section></a></article><article class="card card--list"><a href="/calendar/islamic-calendar.html" class=card__link aria-label="The Islamic Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/crescent-moon-waxing.jpg?1" width=150 height=84 alt="A Waxing Crescent Moon in the evening." class=card__img></div><section class=card__content><h4 class=card__title>The Islamic Calendar</h4><p class=card__text>Muslims around the world use the Hijri calendar. How does it work?</p></section></a></article><article class="card card--list"><a href="/calendar/jewish-calendar.html" class=card__link aria-label="The Jewish Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/torah-scroll.jpg?1" width=150 height=84 alt="Torah scroll" class=card__img></div><section class=card__content><h4 class=card__title>The Jewish Calendar</h4><p class=card__text>Jews use the Hebrew calendar to set the dates of religious events.</p></section></a></article><article class="card card--list"><a href="/calendar/persian-calendar.html" class=card__link aria-label="The Persian Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/tomb-omar-khayyam.jpg?1" width=150 height=84 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>The Persian Calendar</h4><p class=card__text>The Persian Solar Hijri calendar is extremely accurate. Find out why.</p></section></a></article><article class="card card--list"><a href="/calendar/about-chinese.html" class=card__link aria-label="The Chinese Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/chinese-calendar-new-year.jpg?1" width=150 height=84 alt="Chinese lions dance to the firecrackers in Chinatown of Washington D.C. for the annual Chinese New Year celebration." class=card__img></div><section class=card__content><h4 class=card__title>The Chinese Calendar</h4><p class=card__text>The Chinese calendar is one of the oldest calendars still in use.</p></section></a></article><article class="card card--list"><a href="/calendar/bahai-calendar.html" class=card__link aria-label="The Baháʼí Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/bahai-temple.jpg?1" width=150 height=84 alt="The Shrine of the Bab in Haifa, Israel" class=card__img></div><section class=card__content><h4 class=card__title>The Baháʼí Calendar</h4><p class=card__text>The Badi calendar of the Bahai (Baháʼí ) religion features a year of nineteen months. How does the calendar system work?</p></section></a></article><article class="card card--list"><a href="/calendar/coptic-calendar.html" class=card__link aria-label="The Coptic Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/coptic-church.jpg?1" width=150 height=84 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>The Coptic Calendar</h4><p class=card__text>The Coptic calendar is linked to the ancient Egyptian calendar and the Julian calendar. It is used in Egypt and in the Coptic Church. How does it work?</p></section></a></article><article class="card card--list"><a href="/calendar/ethiopia-calendar.html" class=card__link aria-label="The Ethiopian Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/ethiopian-church-calendar.jpg?1" width=150 height=84 alt="The exterior of Ras Makkonen Selassie church in Harar, Ethiopia." class=card__img></div><section class=card__content><h4 class=card__title>The Ethiopian Calendar</h4><p class=card__text>The Ethiopian calendar is similar to the Julian calendar.</p></section></a></article><article class="card card--list"><a href="/calendar/roman-calendar.html" class=card__link aria-label="The Roman Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/roman-calendar.jpg?1" width=150 height=84 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>The Roman Calendar</h4><p class=card__text>The Roman calendar is is the grandfather of our modern calendar.</p></section></a></article><article class="card card--list"><a href="/calendar/mayan.html" class=card__link aria-label="How Does the Mayan Calendar Work?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/istock-545593812.jpg?1" width=150 height=84 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>How Does the Mayan Calendar Work?</h4><p class=card__text>The Maya calendar consists of a system of three interlacing calendars and almanacs which was used by several cultures in Central America.</p></section></a></article><article class="card card--list"><a href="/calendar/revised-julian-calendar.html" class=card__link aria-label="The Revised Julian Calendar"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/american-orthodox-church.jpg?1" width=150 height=84 title="American flag flying next to an Orthodox church in Los Angeles, California USA." alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>The Revised Julian Calendar</h4><p class=card__text>The Revised Julian calendar is one of the most accurate calendar systems ever developed. How does it work, and why don't we use it?</p></section></a></article><article class="card card--list"><a href="/calendar/julian-gregorian-switch.html" class=card__link aria-label="Gregorian Calendar Reform: Why Are Some Dates Missing?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/pope-gregory.jpg?1" width=150 height=84 alt="Bronze statue of Bolognese Pope Gregory XIII in Accursio Palace Bologna" class=card__img></div><section class=card__content><h4 class=card__title>Gregorian Calendar Reform: Why Are Some Dates Missing?</h4><p class=card__text>The Gregorian calendar was introduced in 1582 in some countries. The US, Canada, and the UK changed in 1752. Why were some days skipped?</p></section></a></article><article class="card card--list"><a href="/calendar/maya-world-end.html" class=card__link aria-label="Did the Mayan Calendar Predict The End?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/time-universe-6.jpg?1" width=150 height=84 alt="Real Earth Planet in yellow sun. Remodeled from real Earth NASA photo" class=card__img></div><section class=card__content><h4 class=card__title>Did the Mayan Calendar Predict The End?</h4><p class=card__text>The Mayan calendar ended one of its great cycles in December 2012, fuelling predictions about the end of the world on December 21, 2012 at 11:11(UTC).</p></section></a></article><article class="card card--list"><a href="/calendar/months/" class=card__link aria-label="About the 12 Months"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/promo-card-about-12-months.png?1" width=150 height=84 alt="Illustration of the moon and earth in outer space." class=card__img></div><section class=card__content><h4 class=card__title>About the 12 Months</h4><p class=card__text>Why are there 12 months? How long are they, and what do the month names mean?</p></section></a></article><article class="card card--list"><a href="/calendar/days/" class=card__link aria-label="About the 7 Days"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/promo-card-about-7-days.png?1" width=150 height=84 alt="Illustration of a hand about to rip of calendar a page. In the background there are calendar pages flowing in the air." class=card__img></div><section class=card__content><h4 class=card__title>About the 7 Days</h4><p class=card__text>Why are there 7 days? How were the days named, and when does the week start?</p></section></a></article><article class="card card--list"><a href="/date/leapyear.html" class=card__link aria-label="What Is a Leap Year?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/leap-year-366-days.png?1" width=150 height=84 title="Leap Year 366 Days" alt="Typography Illustration showing the text Leap Year 366 days" class=card__img></div><section class=card__content><h4 class=card__title>What Is a Leap Year?</h4><p class=card__text>A leap year has 366 days, as opposed to a common year, which has 365. Nearly every four years is a Leap Year, and we add a leap day, an extra day on February 29.</p></section></a></article><article class="card card--list"><a href="/calendar/ce-bce-what-do-they-mean.html" class=card__link aria-label="What Do CE and BCE Mean?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/bce-ce-meaning.png?1" width=150 height=84 alt="Timeline with BC, BCE, AD, and CE on both sides of the year 1" class=card__img></div><section class=card__content><h4 class=card__title>What Do CE and BCE Mean?</h4><p class=card__text>CE is an abbreviation for Common Era and BCE is short for Before Common Era.</p></section></a></article><article class="card card--list"><a href="/calendar/determining-easter-date.html" class=card__link aria-label="Calculating the Easter Date"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/easter-date-calendar.jpg?1" width=150 height=84 title="An Easter Sunday date in the calendar" alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>Calculating the Easter Date</h4><p class=card__text>The date of Easter Day depends on age-old approximations of the Full Moon and the March equinox.</p></section></a></article><article class="card card--list"><a href="/date/perfect-calendar.html" class=card__link aria-label="How Accurate Are Calendars?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/space-earth-sun.jpg?1" width=150 height=84 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>How Accurate Are Calendars?</h4><p class=card__text>Our calendar doesn't accurately reflect the time Earth takes to complete a full orbit around the Sun. Why is this? Do other calendars do a better job?</p></section></a></article><article class="card card--list"><a href="/counters/mil2000.html" class=card__link aria-label="When Did the 21st Century Start?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/fireworks-night-sydney.jpg?2" width=150 height=84 alt="Fireworks at night over a bridge. Boats on the river under the bridge." class=card__img></div><section class=card__content><h4 class=card__title>When Did the 21st Century Start?</h4><p class=card__text>When did the 3rd millennium and 21st century begin: on New Year's Day 2000 or 2001? Do we count from year 1 or year 0 AD? What century are we in?</p></section></a></article><article class="card card--list"><a href="/date/doomsday-rule.html" class=card__link aria-label="The Doomsday Rule"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/leap-year-capital.jpg?1" width=150 height=84 alt="Calendar page" class=card__img></div><section class=card__content><h4 class=card__title>The Doomsday Rule</h4><p class=card__text>Some dates fall on the same weekday every year. Use this knowledge to calculate the weekday of any given date in your head.</p></section></a></article><article class="card card--list"><a href="/date/special-dates.html" class=card__link aria-label="Special Calendar Dates"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/special-dates-typography.jpg?1" width=150 height=84 title="Special dates in the Gregorian Calendar." alt="Special dates in the Gregorian Calendar." class=card__img></div><section class=card__content><h4 class=card__title>Special Calendar Dates</h4><p class=card__text>Learn more about numerically unique calendar dates such as sequential dates, same number dates, and palindrome (reversible) dates</p></section></a></article><article class="card card--list"><a href="/astronomy/tropical-year.html" class=card__link aria-label="A Year Is Never 365 Days"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/tropical-year-illustration.png?1" width=150 height=84 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>A Year Is Never 365 Days</h4><p class=card__text>A tropical year, also known as a solar year, is the time it takes for the seasons to repeat, approximately 365.242189 days.</p></section></a></article><article class="card card--list"><a href="/calendar/decade.html" class=card__link aria-label="When Do Decades Start?"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/new-year-saas-fee.jpg?1" width=150 height=84 alt="People watching fireworks above a mountain village." class=card__img></div><section class=card__content><h4 class=card__title>When Do Decades Start?</h4><p class=card__text>Did the year 2020 mark the beginning of a new decade, or did the twenties begin on January 1, 2021?</p></section></a></article><article class="card card--list"><a href="/calendar/how-do-roman-numerals-work.html" class=card__link aria-label="How To Write and Count Roman Numerals"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/roman-numerals-table.png?1" width=150 height=84 alt="Roman numerals 1-5, numbers in Roman numerals, chart, short table" class=card__img></div><section class=card__content><h4 class=card__title>How To Write and Count Roman Numerals</h4><p class=card__text>Discover how Roman numerals work, as well as the rich history behind them and their use in popular culture.</p></section></a></article><article class="card card--list"><a href="/holidays/astronomical-holidays-worldwide.html" class=card__link aria-label="Holidays Connected to Astronomic Events"><div class=card__img-wrap><img src="//c.tadst.com/gfx/150x84/kites-rooftops-sunset.jpg?2" width=150 height=84 alt="Families flying kites from the rooftops of their old brick buildings in the old city of Jaipur. This is a popular sport of Makar Sankranti and Independence Day." class=card__img></div><section class=card__content><h4 class=card__title>Holidays Connected to Astronomic Events</h4><p class=card__text>People worldwide mark the movement of celestial bodies with a wide variety of celebrations and rituals. We list the most important astronomical holidays.</p></section></a></article></section></article><aside class="layout-grid__sidebar article__sidebar"><div class="clip-block clip-block--calendar"><h3 class=clip-block__title>Create Calendar With Holidays</h3><form name=cf id=cf class="small ten" method=get action="/scripts/createcal2.php"><div class=form-row><label class="inline six"><input type=radio name=typ value=0 checked>Full year</label><input placeholder=yyyy type=text autocomplete=off tad-va=date onfocus="window.ifc&&ifc(this,'y')" pattern="[0-9]*" maxlength=4 size=9 id=boxyear name=year title="Enter year as a 4-digit number." class=six value=2024></div><div class=form-row><label class="inline six"><input type=radio name=typ value=1>Month</label><select id=month name=month class="inline six" onchange='document.cf.typ[1].checked=true'><option value=1>January</option><option value=2>February</option><option value=3>March</option><option value=4>April</option><option value=5>May</option><option value=6>June</option><option value=7>July</option><option value=8>August</option><option value=9>September</option><option value=10>October</option><option value=11 selected>November</option><option value=12>December</option></select></div><div class=form-row><select id=country name=country class="inline twelve" title="Select country"><option value=29>Australia</option><option value=27>Canada</option><option value=35>India</option><option value=32>Ireland</option><option value=30>New Zealand</option><option value=9>United Kingdom</option><option value=1>United States</option><option value=160>Afghanistan</option><option value=93>Albania</option><option value=123>Algeria</option><option value=207>American Samoa</option><option value=97>Andorra</option><option value=127>Angola</option><option value=217>Anguilla</option><option value=221>Antigua and Barbuda</option><option value=37>Argentina</option><option value=102>Armenia</option><option value=177>Aruba</option><option value=29>Australia</option><option value=36>Austria</option><option value=85>Azerbaijan</option><option value=110>Bahamas</option><option value=133>Bahrain</option><option value=233>Bangladesh</option><option value=112>Barbados</option><option value=83>Belarus</option><option value=31>Belgium</option><option value=193>Belize</option><option value=148>Benin</option><option value=113>Bermuda</option><option value=198>Bhutan</option><option value=53>Bolivia</option><option value=86>Bosnia and Herzegovina</option><option value=144>Botswana</option><option value=33>Brazil</option><option value=224>British Virgin Islands</option><option value=79>Brunei</option><option value=73>Bulgaria</option><option value=165>Burkina Faso</option><option value=166>Burundi</option><option value=140>Cambodia</option><option value=134>Cameroon</option><option value=27>Canada</option><option value=157>Cape Verde</option><option value=111>Cayman Islands</option><option value=167>Central African Republic</option><option value=161>Chad</option><option value=43>Chile</option><option value=41>China</option><option value=46>Colombia</option><option value=172>Comoros</option><option value=84>Congo DR</option><option value=208>Cook Islands</option><option value=58>Costa Rica</option><option value=28>Croatia</option><option value=51>Cuba</option><option value=189>Curaçao</option><option value=94>Cyprus</option><option value=3>Czechia</option><option value=2>Denmark</option><option value=153>Djibouti</option><option value=229>Dominica</option><option value=52>Dominican Republic</option><option value=49>Ecuador</option><option value=80>Egypt</option><option value=55>El Salvador</option><option value=61>Equatorial Guinea</option><option value=168>Eritrea</option><option value=72>Estonia</option><option value=81>Ethiopia</option><option value=219>Falkland Islands</option><option value=175>Faroe Islands</option><option value=180>Fiji</option><option value=24>Finland</option><option value=5>France</option><option value=235>French Guiana</option><option value=205>French Polynesia</option><option value=150>Gabon</option><option value=149>Gambia</option><option value=87>Georgia</option><option value=8>Germany</option><option value=118>Ghana</option><option value=119>Gibraltar</option><option value=11>Greece</option><option value=138>Greenland</option><option value=22>Gregorian calendar</option><option value=182>Grenada</option><option value=236>Guadeloupe</option><option value=188>Guam</option><option value=50>Guatemala</option><option value=191>Guernsey</option><option value=169>Guinea</option><option value=173>Guinea-Bissau</option><option value=227>Guyana</option><option value=103>Haiti</option><option value=54>Honduras</option><option value=42>Hong Kong</option><option value=12>Hungary</option><option value=88>Iceland</option><option value=35>India</option><option value=65>Indonesia</option><option value=75>Iran</option><option value=109>Iraq</option><option value=32>Ireland</option><option value=234>Isle of Man</option><option value=34>Israel</option><option value=13>Italy</option><option value=125>Ivory Coast</option><option value=117>Jamaica</option><option value=26>Japan</option><option value=192>Jersey</option><option value=44>Jordan</option><option value=23>Julian calendar</option><option value=82>Kazakhstan</option><option value=105>Kenya</option><option value=194>Kiribati</option><option value=120>Kosovo</option><option value=108>Kuwait</option><option value=136>Kyrgyzstan</option><option value=176>La Réunion</option><option value=200>Laos</option><option value=89>Latvia</option><option value=121>Lebanon</option><option value=163>Lesotho</option><option value=129>Liberia</option><option value=124>Libya</option><option value=96>Liechtenstein</option><option value=90>Lithuania</option><option value=17>Luxembourg</option><option value=186>Macau</option><option value=156>Madagascar</option><option value=162>Malawi</option><option value=69>Malaysia</option><option value=201>Maldives</option><option value=152>Mali</option><option value=95>Malta</option><option value=213>Marshall Islands</option><option value=181>Martinique</option><option value=210>Mauritania</option><option value=143>Mauritius</option><option value=171>Mayotte</option><option value=40>Mexico</option><option value=211>Micronesia</option><option value=91>Moldova</option><option value=99>Monaco</option><option value=185>Mongolia</option><option value=101>Montenegro</option><option value=220>Montserrat</option><option value=106>Morocco</option><option value=126>Mozambique</option><option value=190>Myanmar</option><option value=130>Namibia</option><option value=215>Nauru</option><option value=187>Nepal</option><option value=204>New Caledonia</option><option value=30>New Zealand</option><option value=57>Nicaragua</option><option value=158>Niger</option><option value=77>Nigeria</option><option value=237>Norfolk Island</option><option value=183>North Korea</option><option value=92>North Macedonia</option><option value=225>Northern Mariana Islands</option><option value=18>Norway</option><option value=135>Oman</option><option value=64>Pakistan</option><option value=212>Palau</option><option value=60>Panama</option><option value=202>Papua New Guinea</option><option value=56>Paraguay</option><option value=47>Peru</option><option value=67>Philippines</option><option value=14>Poland</option><option value=15>Portugal</option><option value=114>Puerto Rico</option><option value=107>Qatar</option><option value=151>Republic of the Congo</option><option value=19>Romania</option><option value=20>Russia</option><option value=128>Rwanda</option><option value=232>Saint Barthélemy</option><option value=170>Saint Helena</option><option value=226>Saint Kitts and Nevis</option><option value=218>Saint Lucia</option><option value=231>Saint Martin</option><option value=228>Saint Pierre and Miquelon</option><option value=222>Saint Vincent and the Grenadines</option><option value=206>Samoa</option><option value=98>San Marino</option><option value=174>São Tomé and Príncipe</option><option value=74>Saudi Arabia</option><option value=147>Senegal</option><option value=38>Serbia</option><option value=154>Seychelles</option><option value=164>Sierra Leone</option><option value=63 selected>Singapore</option><option value=230>Sint Maarten</option><option value=39>Slovakia</option><option value=45>Slovenia</option><option value=209>Solomon Islands</option><option value=137>Somalia</option><option value=62>South Africa</option><option value=70>South Korea</option><option value=146>South Sudan</option><option value=16>Spain</option><option value=116>Sri Lanka</option><option value=145>Sudan</option><option value=178>Suriname</option><option value=155>Swaziland</option><option value=21>Sweden</option><option value=10>Switzerland</option><option value=132>Syria</option><option value=71>Taiwan</option><option value=197>Tajikistan</option><option value=115>Tanzania</option><option value=68>Thailand</option><option value=25>The Netherlands</option><option value=199>Timor-Leste</option><option value=159>Togo</option><option value=195>Tonga</option><option value=104>Trinidad and Tobago</option><option value=122>Tunisia</option><option value=4>Turkey</option><option value=196>Turkmenistan</option><option value=223>Turks and Caicos Islands</option><option value=214>Tuvalu</option><option value=179>U.S. Virgin Islands</option><option value=139>Uganda</option><option value=76>Ukraine</option><option value=66>United Arab Emirates</option><option value=9>United Kingdom</option><option value=1>United States</option><option value=59>Uruguay</option><option value=184>Uzbekistan</option><option value=203>Vanuatu</option><option value=100>Vatican City</option><option value=48>Venezuela</option><option value=78>Vietnam</option><option value=216>Wallis and Futuna</option><option value=131>Yemen</option><option value=142>Zambia</option><option value=141>Zimbabwe</option></select></div><div class=form-row><input type=submit value="View Calendar"></div></form></div><hr class=dash><div class="clip-block clip-block--list"></div><h3>Other Topics</h3><ul><li><a href=april>April</a></li><li><a href=asteroids>Asteroids</a></li><li><a href=astronomy>Astronomy</a></li><li><a href=atmospheric-phenomena>Atmospheric Phenomena</a></li><li><a href=august>August</a></li><li><b title="This is the page you are currently reading">Calendar</b></li><li><a href=clocks>Clocks</a></li><li><a href=comets>Comets</a></li><li><a href=dates>Dates</a></li><li><a href=daylight-saving-time>Daylight Saving Time</a></li><li><a href=december>December</a></li><li><a href=earth>Earth</a></li><li><a href=eclipses>Eclipses</a></li><li><a href=equinox>Equinox</a></li><li><a href=february>February</a></li><li><a href=full-moon-names>Full Moon Names</a></li><li><a href=fun>Fun</a></li><li><a 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