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  2. History of calendars - Wikipedia

    en.wikipedia.org/wiki/History_of_calendars

    The history of calendars covers practices with ancient roots as people created ... The New Year in 709 AUC began on 1 January and ran over 365 days until 31 December ...

  3. Cosmic Calendar - Wikipedia

    en.wikipedia.org/wiki/Cosmic_Calendar

    A graphical view of the Cosmic Calendar, featuring the months of the year, days of December, the final minute, and the final second. The Cosmic Calendar is a method to visualize the chronology of the universe, scaling its currently understood age of 13.8 billion years to a single year in order to help intuit it for pedagogical purposes in science education or popular science.

  4. December - Wikipedia

    en.wikipedia.org/wiki/December

    December is the twelfth and final month of the year in the Julian and Gregorian calendars. Its length is 31 days. December, from the Très Riches Heures du duc de Berry. December's name derives from the Latin word decem (meaning ten) because it was originally the tenth month of the year in the calendar of Romulus c. 750 BC, which began in March ...

  5. Geologic Calendar - Wikipedia

    en.wikipedia.org/wiki/Geologic_Calendar

    The Geologic Calendar is a scale in which the geological timespan of the Earth is mapped onto a calendrical year; that is to say, the day one of the Earth took place on a geologic January 1 at precisely midnight, and today's date and time is December 31 at midnight. [1]

  6. Gregorian calendar - Wikipedia

    en.wikipedia.org/wiki/Gregorian_calendar

    The Gregorian calendar, like the Julian calendar, is a solar calendar with 12 months of 28–31 days each. The year in both calendars consists of 365 days, with a leap day being added to February in the leap years. The months and length of months in the Gregorian calendar are the same as for the Julian calendar.

  7. 1917 – A ship carrying TNT and picric acid in Halifax Harbour, Canada, caught fire after a collision and caused one of the largest accidental explosions in history (pictured). 1956 – In what became known as the Blood in the Water match at the Melbourne Olympics , the Hungarian water polo team defeated the Soviet Union 4–0 against the ...

  8. List of timelines - Wikipedia

    en.wikipedia.org/wiki/List_of_timelines

    A graphical view of the Cosmic Calendar, featuring the months of the year, days of December, and the final minute. The Cosmic Calendar is a method to visualize the chronology of the universe , scaling its current age of 13.8 billion years to a single year in order to help intuit it for pedagogical purposes in science education or popular science .

  9. Category:December - Wikipedia

    en.wikipedia.org/wiki/Category:December

    December is the twelfth month of the year in the Gregorian calendar. This category is for individual days in December, the month of December in recent years, and things that are strongly associated with December.