Printer Version Table of Contents Project Home Page
.TOPIC.......: How Fdate Thinks About Dates
.DISCUSSION..:
Also, see Topic Fdate's Century-Assumption Algorithm
see Topic Fdate's Leap Year Algorithm


Fdate's BUSINESS VIEW OF THE CALENDAR

Fdate is intended for business applications, not historical ones.

Fdate does not take into account historical changes in the calendar such as the eleven days that were dropped from the British calendar when Britain moved from the Julian to the Gregorian calendar in the 18th century, or the 13 days that were dropped from the Russian calendar when Russia made the same move in the early 20th century.

As far as Fdate is concerned, the calendar has followed the same pattern, unchanged, since January 1, 0001.


Fdate's BASE DATE

Internally, Fdate's date manipulations are based on translating a calendar date into an "absolute" date: a date expressed as the number of days from some day in the distant past.