My 'localtime' function output doesn't reflect DST since the Sunday changeover.
System: XP Pro; Perl B811 The earlier DST change time seems to be picked up OK by Windoze clock. There was some mention of the table changes by Microsoft I believe and there is some info at http://support.microsoft.com/gp/dst_hu1 based on user type. GetTimeZoneInformation API call looks OK to me - here's all the pertinent output: ActiveTime: '-52588' (BIN) DaylightBias: '-60' (DW) StandardBias: '0' (DW) DaylightName: 'Pacific Daylight Time' (SZ) StandardStart: '720896' (BIN) ActiveTimeBias: '420' (DW) Bias: '480' (DW) DaylightStart: '196608' (BIN) StandardName: 'Pacific Standard Time' (SZ) GetTimeZoneInformation ret: 2 (Daylight Savings Time) UTC bias from localtime: 480 StandardName: Pacific Standard Time SYear: 0 SMonth: 11 SDayOfWeek: 0 SDay: 1 SHour: 2 SMinute: 0 SSecond: 0 SMilliseconds: 0 StandardBias: 0 DaylightName: Pacific Daylight Time DYear: 0 DMonth: 3 DDayOfWeek: 0 DDay: 2 DHour: 2 DMinute: 0 DSecond: 0 DaylightBias: -60 StandardDate: first Sunday of November at 2 StandardDate-raw: 0-11-0-1-2-0-0-0 DaylightDate: second Sunday of March at 2 DaylightDate-raw: 0-3-0-2-2-0-0-0 However localtime returns the following: Perl localtime: Tue Mar 13 05:56:54 2007 Actual time is 06:56 PDT not 05:56 PST. GMT : 54 56 13 13 2 107 2 71 0 GMT : yr=2007, mo=3, day=13, hr=13, min=56, sec=54, DST=no Local: 54 56 5 13 2 107 2 71 0 Local: yr=2007, mo=3, day=13, hr=5, min=56, sec=54, DST=no Note the isdst field (last element) is set to 0 (off) and the time is off by an hour. Registry SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation shows the following values: ActiveTime: '-52588' (BIN) DaylightBias: '-60' (DW) StandardBias: '0' (DW) DaylightName: 'Pacific Daylight Time' (SZ) StandardStart: '720896' (BIN) ActiveTimeBias: '420' (DW) Bias: '480' (DW) DaylightStart: '196608' (BIN) StandardName: 'Pacific Standard Time' (SZ) Microsoft has this info http://msdn2.microsoft.com/en-us/vstudio/bb264729.aspx and other Q&A : Q: I’m a C++ developer who uses the TZ environment variable, what does this mean to me? A: For customers who rely on the TZ environment variable for the DST information, they will get outdated DST information for 2007 and beyond (i.e., they will get DST information according to the previous system). Microsoft is currently working on a fix for this issue and will post information about its availability on the Visual Studio Support page. In the interim, developers are advised to test their applications to determine the impact of the DST update on their applications. This issue is also fixed in Visual Studio code name “Orcas”. Support page: http://msdn2.microsoft.com/en-us/vstudio/aa718682.aspx _______________________________________________ Perl-Win32-Users mailing list [email protected] To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
