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The calendar begins on Gregorian date September 22nd, 1792, the September equinox and date of the founding of the First Republic. This day is designated the first day of the month of Vendémiaire in year 1 of the Republic.
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www.fourmilab.ch/documents/calendar/
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These are simple back and forth conversation to and from Calendar Date (normally Gregorian) and Julian Date. Enter the Calendar Date in the appropriate fields and then press the desired button to calculate the Julian Date or enter the Julian Date in that field and click the button to convert to the Gregorian Date.
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www.csgnetwork.com/juliangregcalconv.html
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Calendar date to Julian date ... This application assumes that the changeover from the Julian calendar to the Gregorian calendar occurred in October of 1582, according to the scheme instituted by Pope Gregory XIII. Specifically, for dates on or before 4 October 1582, the Julian calendar is used;
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aa.usno.navy.mil/data/docs/JulianDate.php
aa.usno.navy.mil/data/docs/JulianDate.php
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hebcal.com -> Hebrew Date Converter ... Gregorian to Hebrew ... Hebrew to Gregorian...
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www.hebcal.com/converter/
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The Hijri date is the Islamic calendar. It started in the moon year in which prophet Mohammed immigrated from Makkah to Madinah. To learn more about the Hijri date read the following introduction. ... Gregorian to Hijri Hijri to Gregorian...
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Gregorian to Hijri Hijri to Gregorian ; Day: Month: Year: ... Change Gregorian Month ... Complete Gregorian Calendar...
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www.islamicfinder.org/Hcal/index.php
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The following form will allow you to covert between Gregorian (20th/21st century) dates and USF/Star Trek Stardates. All Stardates represent years in the TNG/DS9/VOY calendar. ... Enter the current date & time, MM/DD/YY HH:MM:
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www.sector001.com/excelsior/stardate.html
www.sector001.com/excelsior/stardate.html
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Unless words are used, the only unambiguous unqualified formats for writing the Gregorian date are those using the order YYYY-MM-DD. The best format for writing the time is 24-hour HH:MM[:SS], and it should follow, rather than precede, the date, and be followed by a time offset indication if appropriate.
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www.merlyn.demon.co.uk/datefmts.htm
www.merlyn.demon.co.uk/datefmts.htm
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Neither the ddate program nor I care if you want to find the 31st day in February; it will pretend that there are 31 days in February, and return the appropriate date. Besides, if there are 31 days in your February, who am I to object?
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jubal.westnet.com/hyperdiscordia/dateconvert.html
jubal.westnet.com/hyperdiscordia/dateconvert.html
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