Julian Day Number from Date Calculator

Calculates Julian Day and Modified Julian Day numbers from Julian and Gregorian calendars.

Julian Day Number from Date
    1. Calendar  
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Julian Day Number from Date
The Julian Day number is the number of days elapsed since noon (12:00) on January 1, 4713 BC
The Modified Julian Day number is the number of days since midnight on November 17, 1858 AD (MJD=JD-2400000.5)
The Gregorian calendar is used for dates on and after October 15, 1582 AD and the Julian calendar is used before October 4, 1582.
    Julian Day Number from Date
    [1-4] /4Disp-Num
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    [1]  2019/05/05 02:34   Male / 60 years old level or over / A retired person / Not at All /
    Purpose of use
    Curiosity...
    [2]  2018/12/15 19:16   Male / Under 20 years old / Self-employed people / Very /
    Purpose of use
    Show me the true meaning of life’s actions and why what happens
    [3]  2017/11/19 17:10   - / - / - / - /
    Bug report
    Your results are a year out, 1 Jan 2200 will show the Julian day for 1 Jan 2019 because you have taken into account year 0
    [4]  2017/02/23 03:54   Male / 60 years old level or over / High-school/ University/ Grad student / Very /
    Purpose of use
    calculate lunation

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