2450830.5281
.
When used without arguments, it prints out the current JD using the system
clock.
mjd - prints out the modified julian date, e.g.
50830.0281
.
epoch - prints out the year and fraction.
pipe - reads input from stdin where the first field is an iso date and replaces it with jd or mjd and the rest of the line. pipe2 subtracts off first jd.
year= prints out the jd for the specified decimal year.