This program uses a cookie to remember the interface settings between calls.
DATE ISOymd = 20161025 = 2016 10 25 on the Gregorian Calendar
= October25, 2016 (Tuesday)
JD = 2457687 = Standard Calendrical JD number for Gregorian date
Gregorian Calendar Date = Julian Date + 13 days
Note that the corresponding days of the week are the same on both
calendars no matter the number of days difference between them.
© Jay Tanner - PHP Science Labs - 2016 - v1.01