JULIAN DAYS................ [Se preferir, veja a página em Português com mais detalhes]

Insert a date – from 4713 Jan 1st to 1 Dec 31st B.C. or from 1 Jan 1st to 1582 Oct 4th or from 1582 Oct 15th to 9999... Dec 31st A.D. – and see the correspondent "julian day" (examples: |4713|1|1|bc| or |2002|12|9|ad|) - notice that 1582 Oct 5 to 14 A.D. were suppressed in the transition to Gregorian Calendar:

Year
Month
Day
bc/ad
Julian Day
Weekday

Insert a second date and see the elapsed days between both (don't insert the second date if you don't have the first one):

Year
Month
Day
bc/ad
Julian Day
Weekday
Elapsed days

Contrary to that, insert a "julian day", from 0 to infinity, and see the correspondent date:

Julian Day
Year
Month
Day
Age
Weekday

Note: If you compare this calendar with the one in Microsoft/Office/Excel, you will find a difference in year 1900. This is a problem in Excel, that incorrectly considers 1900 a leap year. Any attempt to calculate former dates (before 1900 March 1st), starting from Excel calendar, will result 1 day mistake.

See details on my correspondent page – portuguese version.

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© 20/05/1996 Atualizada em 06/09/2015