Sounds like time for using Julian Days for the calculation. Per Ken, take a look at Sarah's date conversion routines at www.troz.net(they include Julian day conversions). Also, if you happen to be using an sql database in your application, there are SELECT statements that will do date calculations for you. Pete Molly's Revenge <http://www.mollysrevenge.com>
On Tue, Jul 19, 2011 at 12:29 PM, Ken Ray <k...@sonsothunder.com> wrote: > > On Jul 19, 2011, at 11:40 AM, Pete wrote: > > > Hi Andre, > > I don't have a definitive answer for you but this sounds like it is > > connected to "epoch" dates which are the number of days since Jan 1, > 1970. > > I'm guessing that somewhere along the line, your dates are being > converted > > to the epoch format on the WIndows platform that would certainly cause a > > problem for dates prior to 1970. I don't know why that would be > different > > in Windows than OS X. > > I'm not sure either, since on Mac OS 9 whenever a date got messed up it > would always be set to "12/31/1969" (the day before the Epoch). For Windows, > though, this is actually documented under the 'convert' command: > > "Note: The range of dates that the convertcommand can handle is limited by > the operating system's date routines. In particular, Windows systems are > limited to dates after 1/1/1970." > > You'll have to use some other method to calculate your dates, > unfortunately. FYI: Here's the info on the Unix Epoch: > > http://en.wikipedia.org/wiki/Unix_time > > > Ken Ray > Sons of Thunder Software, Inc. > Email: k...@sonsothunder.com > Web Site: http://www.sonsothunder.com/ > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > > _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
