Compute differences in days, hours, minutes and seconds between dates and times . Quickly compute the number of days to or from January 1, 2000. This new format also applies to other functions described below that use a date. As of version 1.2 jd works for dates prior to 15 October 1582. For example, if you enter 1.011963 and then 7.171997 and prss this function, you'll get an answer of 12616 days.
Today Put today's date on the stack, in mm.ddyyyy form.
Compute the number of days until Jan 1, 2000. This set of functions is Year 2000 compliant. Also this is not a Millennium countdown function. There are other programs available for that. This function is useful for adding and subtracting times.