On Dec 29, 2006, at 9:35 PM, Chris Burke wrote:
Nevertheless, it is important that the date routines be reliable, and the suggestion that they may not be is a concern. Are there standard tests that should be run?
I use the sum of the number of days in any 400 consecutive years in the Gregorian calendar. It should amount to 146097, which, divided by 400 yields 365.2425 for the average length of the Gregorian year. The current estimate of astronomers for year length is 365.242199See the essay "How Long is a Year" in APL Quote Quad 7.4, Winter 1977.
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