2,092 days ago (5 years, 8 months, 23 days ago)

Monday, December 21, 2020

Monday, December 21, 2020 is a Monday. It is day 356 of 2020 (97.3% through the year), ISO week 52, in Q4.

Calendar dial and astronomical representation

Comprehensive Date Metrics for Monday, December 21, 2020

ISO 8601 & Astronomical
Day of Year 356 / 366 97.3% of 2020 passed
Days Left in Year 10 days Remaining until Jan 1, 2021
ISO Week Number Week 52 Quarter Q4
Day Classification Weekday Monday
Roman Numeral Date XXI.XII.MMXX Day.Month.Year
Julian Day Number (JDN) 2,459,204.5 Astronomical continuous count
Unix Epoch Timestamp 1608552000 Seconds since Jan 1, 1970 UTC
Moon Phase & Illumination First Quarter 39% illuminated
Astrological Zodiac Sign Sagittarius Sun Sign
Calendar Season Winter in the Northern Hemisphere, summer in the Southern Hemisphere Northern hemisphere season
Leap Year Status Leap Year (366 days) February has 29 days
Time Elapsed / Countdown 2,092 days ago (5 years, 8 months, 23 days ago) Relative to today

Holidays & Observances

December 21
Observance Armed Forces Day (Philippines)
Observance O Oriens
Observance Peter Canisius
Observance Thomas the Apostle
Observance December 21 (Eastern Orthodox liturgics)
Observance Forefathers' Day (Plymouth, Massachusetts)
Observance São Tomé Day (São Tomé and Príncipe)

Date Overview & Context

Calendar Overview

Monday, December 21, 2020 combines practical calendar facts with a wider view of the day: 2018: Operatives of the British Special Boat Service boarded the container ship Grande Tema in the Thames Estuary to detain four stowaways who had threatened the crew.. Use it to check the date, plan across time zones, and scan the observances and historical markers attached to December 21.

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On This Day in History: December 21

12 Recorded Events

Operatives of the British Special Boat Service boarded the container ship Grande Tema in the Thames Estuary to detain four stowaways who had threatened the crew.

Special Boat Service →

Countries that were part of the Maya civilization celebrated the end-date of a 5,126-year-long cycle in the Mesoamerican Long Count calendar.

Maya civilization →

In accordance with the Oslo II Accord, Israeli troops withdrew from Bethlehem in preparation for the transfer of control to the Palestinian National Authority.

Oslo II Accord →

Mexico's Popocatépetl volcano, dormant for 47 years, began erupting, and is now one of the nation's most active volcanoes.

Popocatépetl →

A bomb on board Pan Am Flight 103 detonated over Lockerbie, Scotland, killing 270 people.

Pan Am Flight 103 →

Apollo 8 launched from Kennedy Space Center in Florida on a trajectory to the Moon; its crew (pictured) became the first humans to visit another celestial body.

Apollo 8 →

The United Nations adopted the International Convention on the Elimination of All Forms of Racial Discrimination, which 88 member states have since signed.

United Nations →

An attempt by Greek Cypriot police to search certain Turkish Cypriot women in Nicosia escalated into island-wide violence, leading to 538 deaths and the displacement of nearly 27,000 people.

Greek Cypriots →

Nepal and the United Kingdom signed the first treaty that defined the international status of Nepal as an independent and a sovereign nation.

Nepal–Britain Treaty of 1923 →

Notable Memorials & Deaths

In Memoriam

Frequently Asked Questions about Monday, December 21, 2020

What day of the week was or is Monday, December 21, 2020?

Monday, December 21, 2020 falls on a Monday.

How many days ago or from now is Monday, December 21, 2020?

2,092 days ago (5 years, 8 months, 23 days ago). It is day 356 of 2020 with 10 days remaining in the year.

What is the Roman numeral format for Monday, December 21, 2020?

In Roman numerals, Monday, December 21, 2020 is written as XXI.XII.MMXX (Day.Month.Year format).

What was the moon phase and zodiac sign on Monday, December 21, 2020?

The moon phase for this date is First Quarter (approx. 39% illuminated). The astrological sun sign is Sagittarius.