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The Darian Defrost Calendar, however, uses the Rotterdam System [7] to create new names for the Martian months out of patterns relating letter choice and name length to month order and season. The Utopian Calendar, devised by the Mars Time Group in 2001, also has additional suggestions for nomenclature modification. [8]
Czech astronomer Josef Šurán offered a Martian calendar design in 1997, in which a common year has 672 Martian days distributed into 24 months of 28 days (or 4 weeks of 7 days each); in skip years, the week at the end of the twelfth month is omitted.
Solar calendar with 13 months of 28 days. Badí‘ calendar: solar: Baháʼí: 1873: Baháʼí: Uses a year of 19 months of 19 days each and a 1844 era. Also known as the "Baháʼí Calendar" or the "Wondrous Calendar". Thai solar calendar: solar: Gregorian: 1888: Thailand: The Gregorian calendar but using the Buddhist Era (543 BC) Invariable ...
French Republican Calendar of 1794, drawn by Philibert-Louis Debucourt. The French Republican calendar (French: calendrier républicain français), also commonly called the French Revolutionary calendar (calendrier révolutionnaire français), was a calendar created and implemented during the French Revolution, and used by the French government for about 12 years from late 1793 to 1805, and ...
The planetary hours are an ancient system in which one of the seven classical planets is given rulership over each day and various parts of the day. Developed in Hellenistic astrology, it has possible roots in older Babylonian astrology, and it is the origin of the names of the days of the week as used in English and numerous other languages.
The Babylonians invented the actual [clarification needed] seven-day week in 600 BCE, with Emperor Constantine making the Day of the Sun (dies Solis, "Sunday") a legal holiday centuries later. [2] In the international standard ISO 8601, Monday is treated as the first day of the week, but in many countries it is counted as the second day of the ...
d – one-digit day of the month for days below 10, e.g. 2; dd – two-digit day of the month, e.g. 02; ddd – three-letter abbreviation for day of the week, e.g. Fri; dddd – day of the week spelled out in full, e.g. Friday; Separators of the components: / – oblique stroke (slash). – full stop, dot or point (period)-– hyphen (dash ...
Start and End dates of Mars Years were determined for 1607–2141 by Piqueux et al. [2] Earth and Mars dates can be converted in the Mars Climate Database, [3] however, the Mars Years are only rational to apply to events that take place on Mars. Mars Year 1 started on 11 April 1955 and ended on 25 February 1957. [2] Mars Year 1 is preceded by ...