Stardate Calculator
This first conversion form can handle dates from any year. Dates before 2323 are preceeded by a minus sign, however they numbers showing the portion of the year elapsed still flow in a poitive direction. The program assumes you are entering the date and time as the Gregorian calendar and GMT.
Date to Stardate Converter
Year Month Day Hours Minutes
Stardate:

This second function also converts from Gregorian/GMT dates into stardates but assumes a standard year length of 365.2425 days and thus has stardates of equal length regardless of whether the Gregorian year is a leap year or not. Stardates generated by this method will differ by a small amount to those generated by method one.
Date to Stardate Converter
Method Two: more accurate but only works
for years between 2323 and 2423.
Year Month Day Hours Minutes
Stardate:

This last function is the reverse of the first & second and converts stardates to GMT time. It is possible to get strange results by putting minus signs or decimal points in the wrong place.
Stardate to Date Converter
Stardate:
Date:

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