jBASE 4.1 and above uses ICU for date conversions. This is accurate for the change in Julian to Gregorian and also beyond the birth of various mythical beings. That said, jBASE is still using an old version of ICU as far as I know, and so there could be bugs fixed in the latest ICU that are not fixed in the jBASE utilized version.
Jim > -----Original Message----- > From: jbase@googlegroups.com [mailto:jbase@googlegroups.com] On Behalf > Of Tony Gravagno > Sent: Thursday, August 11, 2011 10:20 AM > To: jBASE@googlegroups.com > Subject: RE: STRANGE NUMBERS > > > From: theoaivazian > > What do -720987, -720257, -720622, -720352 ,-721718 all have in > > common? answer they are all 01/01/0000 why might that be? > > Theo - The MV date on all platforms is useless for most applications > going back prior to 1800, and it's even invalid in some countries for > dates as recent as the 1920's. Anything prior to 1600 is certain to be > off by several days. This is related to changes to, and adoption of > the Gregorian calendar. If you have a real application that requires > using a date that far back in time, I recommend using OS-based tools > specifically designed for this. Some years ago I considered an open > source collaborative project at PickWiki.com where we could create a > routine that returns accurate dates for Pick-based museum applications. > The demand for such was so small that it wasn't worth it to get the > project started. These days I'm sure code for this could be found, or > you might even find a web service. > > Regards, > T > > Tony Gravagno > Nebula Research and Development > TG@ remove.pleaseNebula-RnD.com > Nebula R&D sells mv.NET and other Pick/MultiValue products worldwide, > and provides related development services remove.pleaseNebula- > RnD.com/blog Visit PickWiki.com! Contribute! > http://Twitter.com/TonyGravagno > > > > -- > Please read the posting guidelines at: > http://groups.google.com/group/jBASE/web/Posting%20Guidelines > > IMPORTANT: Type T24: at the start of the subject line for questions > specific to Globus/T24 > > To post, send email to jBASE@googlegroups.com To unsubscribe, send > email to jbase-unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/jBASE?hl=en -- Please read the posting guidelines at: http://groups.google.com/group/jBASE/web/Posting%20Guidelines IMPORTANT: Type T24: at the start of the subject line for questions specific to Globus/T24 To post, send email to jBASE@googlegroups.com To unsubscribe, send email to jbase-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/jBASE?hl=en
