December 21

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December 21 is the 355th day of the year(356th in leap years) in the Gregorian calendar. 10 days remain until the end of the year.

A leap year is a calendar year containing one additional day added to keep the calendar year synchronized with the astronomical or seasonal year. Because seasons and astronomical events do not repeat in a whole number of days, calendars that have the same number of days in each year drift over time with respect to the event that the year is supposed to track. By inserting an additional day or month into the year, the drift can be corrected. A year that is not a leap year is called a common year.

The Gregorian calendar is the calendar used in most of the world. It is named after Pope Gregory XIII, who introduced it in October 1582. The calendar spaces leap years to make the average year 365.2425 days long, approximating the 365.2422-day tropical year that is determined by the Earth's revolution around the Sun. The rule for leap years is:

Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100, but these centurial years are leap years if they are exactly divisible by 400. For example, the years 1700, 1800, and 1900 are not leap years, but the year 2000 is.

Contents

In the Northern Hemisphere, December 21 is usually the shortest day of the year and is sometimes regarded as the first day of winter. In the Southern Hemisphere, December 21 is usually the longest day of the year and occurs during the southern summer.

Events

AD 69 (LXIX) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Rufinus. The denomination AD 69 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Roman Senate A political institution in ancient Rome

The Roman Senate was a political institution in ancient Rome. It was one of the most enduring institutions in Roman history, being established in the first days of the city of Rome,. It survived the overthrow of the kings in 509 BC, the fall of the Roman Republic in the 1st century BC, the division of the Roman Empire in 395 AD, the fall of the Western Roman Empire in 476 AD, and the barbarian rule of Rome in the 5th, 6th, and 7th centuries.

Vespasian Ninth Emperor of Ancient Rome, founder of the Flavian dynasty

Vespasian was Roman emperor from 69–79, the fourth, and last, in the Year of the Four Emperors. He founded the Flavian dynasty that ruled the Empire for 27 years.

Births

968 Year

Year 968 (CMLXVIII) was a leap year starting on Wednesday of the Julian calendar.

Minamoto no Yorinobu Samurai commander and member of the powerful Minamoto clan

Minamoto no Yorinobu was a samurai commander and member of the powerful Minamoto clan. He was the son of Minamoto no Mitsunaka (912–997). Along with his brother Yorimitsu, Yorinobu served the regents of the Fujiwara clan, taking the violent measures the Fujiwara were themselves unable to take. He held the title, passed down from his father, of Chinjufu-shōgun, Commander-in-chief of the Defense of the North. He served as Governor of the Japanese Ise and Kai Provinces, and was the progenitor of the Kawachi Genji family line and his son, Minamoto no Yorisue, was ancestor of the Takanashi clan of Shinano Province.

Year 1401 (MCDI) was a common year starting on Saturday of the Julian calendar.

Deaths

AD 72 (LXXII) was a leap year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Vespasian and Titus. The denomination AD 72 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Thomas the Apostle Early Christian, one of the twelve apostles and a saint

Thomas the Apostle, also called Didymus ("twin"), was one of the Twelve Apostles of Jesus according to the New Testament.

882 Year

Year 882 (DCCCLXXXII) was a common year starting on Monday of the Julian calendar.

Holidays and observances

Armed Forces Day National holidays honoring military forces

Many nations around the world observe some kind of Armed Forces Day to honor their military forces. It is celebrated in the United States as a day to appreciate all active duty service members. This day is not to be confused with Veterans Day or Memorial Day.

Philippines Republic in Southeast Asia

The Philippines, officially the Republic of the Philippines, is an archipelagic country in Southeast Asia. Situated in the western Pacific Ocean, it consists of about 7,641 islands that are categorized broadly under three main geographical divisions from north to south: Luzon, Visayas and Mindanao. The capital city of the Philippines is Manila and the most populous city is Quezon City, both part of Metro Manila. Bounded by the South China Sea on the west, the Philippine Sea on the east and the Celebes Sea on the southwest, the Philippines shares maritime borders with Taiwan to the north, Japan to the northeast, Vietnam to the west, Palau to the east, and Malaysia and Indonesia to the south.

Calendar of saints Christian liturgical calendar celebrating saints

The calendar of saints is a traditional Christian method of organizing a liturgical year by associating each day with one or more saints and referring to the day as the feast day or feast of said saint. The word "feast" in this context does not mean "a large meal, typically a celebratory one", but instead "an annual religious celebration, a day dedicated to a particular saint".

Related Research Articles

April 7 is the 97th day of the year in the Gregorian calendar. 268 days remain until the end of the year.

December 9 is the 343rd day of the year in the Gregorian calendar. 22 days remain until the end of the year.

February 6 is the 37th day of the year in the Gregorian calendar. 328 days remain until the end of the year.

June 21 is the 172nd day of the year in the Gregorian calendar. 193 days remain until the end of the year.

January 17 is the 17th day of the year in the Gregorian calendar. 348 days remain until the end of the year.

July 23 is the 204th day of the year in the Gregorian calendar. 161 days remain until the end of the year.

May 14 is the 134th day of the year in the Gregorian calendar. 231 days remain until the end of the year.

March 21 is the 80th day of the year in the Gregorian calendar. 285 days remain until the end of the year.

November 22 is the 326th day of the year in the Gregorian calendar. 39 days remain until the end of the year.

November 5 is the 309th day of the year in the Gregorian calendar. 56 days remain until the end of the year.

November 19 is the 323rd day of the year in the Gregorian calendar. 42 days remain until the end of the year.

November 7 is the 311th day of the year in the Gregorian calendar. 54 days remain until the end of the year.

November 3 is the 307th day of the year in the Gregorian calendar. 58 days remain until the end of the year.

October 10 is the 283rd day of the year in the Gregorian calendar. 82 days remain until the end of the year.

October 5 is the 278th day of the year in the Gregorian calendar. 87 days remain until the end of the year.

September 14 is the 257th day of the year in the Gregorian calendar. 108 days remain until the end of the year.

September 5 is the 248th day of the year in the Gregorian calendar. 117 days remain until the end of the year.

September 15 is the 258th day of the year in the Gregorian calendar. 107 days remain until the end of the year.

September 20 is the 263rd day of the year in the Gregorian calendar. 102 days remain until the end of the year.

August 20 is the 232nd day of the year in the Gregorian calendar. 133 days remain until the end of the year.

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