TOC | | |
dmjd - date+time conversion to/from decimal modified Julian date
dmjd yr mon day hour minute seconds or
dmjd yr DOY hour minute seconds or
dmjd decimal MJD or
where DOY = day-of-year and MJD = modified Julian date.
DESCRIPTION
dmjd takes a user input date and time, given as year, month and
day, hour, minute and seconds, or year and day-of-year, hour, minute, and
seconds, converts this to the modified Julian date with fractional day,
and writes the result to stdout. Conversely, dmjd will convert a
modified Julian date to the equivalent date and time
dmjd recognizes three input forms
- dmjd yr mon day hour minute second -> MJD
- dmjd yr DOY hour minute second -> MJD
- dmjd MJD -> yr mon day hour minute second
EXAMPLES
Values returned by the program will be shown in fixed width font.
- Convert a year, month and day to the modified Julian date.
- dmjd 97 12 1 6 0 0
50783.250000
- Convert a year and day-of-year to the modified Julian date.
- dmjd 97 335 15 30 0
50783.645833
- Convert a modified Julian date to the calendar date.
- dmjd 50827.333333
1998 1 14 8 0 0
TOC | | |
dmjd.html
January 14, 2000
Steve Hilla