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U.S. Naval Observatory

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Date:   Time:   Time Zone:

Location: Longitude: 




Local Date & Time:

Daylight Savings Time

Universal Time:

Local Sidereal Time:

Declination of Sun:

decimal degrees

Equation of Time:

decimal minutes

Julian Day Number:

Calculate how many days between!
Copy and paste the Julian Day Number of one date into the first box below, and a Julian Day Number from another date into the second. Then click calculate to find the number of days between the two dates.