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This is a list of adoption dates of the Gregorian calendar by country.For explanation, see the article about the Gregorian calendar.. Except where stated otherwise, the transition was a move by the civil authorities from the Julian to the Gregorian calendar.
1607 was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1607th year of the Common Era (CE) and Anno Domini (AD) designations, the 607th year of the 2nd millennium, the 7th year of the 17th century, and the 8th year of the 1600s decade.
The history of calendars covers practices with ancient roots as people created and used various methods to keep track of days and larger divisions of time.Calendars commonly serve both cultural and practical purposes and are often connected to astronomy and agriculture.
The Gregorian calendar is the calendar used in most parts of the world. [1] [a] It went into effect in October 1582 following the papal bull Inter gravissimas issued by Pope Gregory XIII, which introduced it as a modification of, and replacement for, the Julian calendar.
None of these states adopted the lunar portion, instead calculating the date of Easter astronomically using the instant of the vernal equinox and the full moon according to Kepler's Rudolphine Tables of 1627; this combination was referred to by the Protestant estates as the "improved calendar" (Verbesserte Kalender) and considered to be ...
The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to the dates preceding its official introduction in 1582. In nations that adopted the Gregorian calendar after its official and first introduction, dates occurring in the interim period of 15 October 1582 (the first date of use of Gregorian calendrical dates, being dated 5 October 1582 in the preceding ...
Calendar of Nippur, Third Dynasty of Ur. The Babylonian calendar was a lunisolar calendar used in Mesopotamia from around the 2nd millennium BC until the Seleucid Era (), and it was specifically used in Babylon from the Old Babylonian Period until the Seleucid Era.
The Revised Julian calendar, or less formally the new calendar and also known as the Milanković calendar, is a calendar proposed in 1923 by the Serbian scientist Milutin Milanković as a more accurate alternative to both Julian and Gregorian calendars.