kepler777
June 17th, 2005, 01:54 PM
Hi,
I'm trying to determine the time zone offset ( between local time and UTC - the ancient GMT ) for any date between 1980 and 2099 ( the time span of Windows XP calendar ).Since the end of the 90s, UTC in Portugal become zero, so there's no problem. But, for example, in 1993 it was UTC+1 and with DST increased to 2h of difference. But I can only seem to calculate the DST difference - I can't seem to trap the UTC offset of that year. Is there a way of doing this, or Windows does not store UTC changes from 1980 to now?
Regards,
kepler777
I'm trying to determine the time zone offset ( between local time and UTC - the ancient GMT ) for any date between 1980 and 2099 ( the time span of Windows XP calendar ).Since the end of the 90s, UTC in Portugal become zero, so there's no problem. But, for example, in 1993 it was UTC+1 and with DST increased to 2h of difference. But I can only seem to calculate the DST difference - I can't seem to trap the UTC offset of that year. Is there a way of doing this, or Windows does not store UTC changes from 1980 to now?
Regards,
kepler777