Translate Windows timezone to TZID?
kennykb at crd.ge.com
Fri Jun 17 14:26:32 UTC 2005
The time zone names, offsets, and begin/end rules for summer time
are stored in the system registry, in the path
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\\Time Zones
The keys under that path are the time zone names; within each key
are the values Display (the name to display in the Control Panel)
Std (the name to use for standard time), Dlt (the name to use for
summer time), Index (a number of the zone, but not terribly useful),
MapID (a map location of the zone, again not useful since that
functionality was removed from the Control Panel), and TZI.
The TZI value is an encoded version of a TIME_ZONE_INFORMATION
The two WCHAR arrays are removed, so there are
- bias (minutes west) - 32 bits
- standard bias (adjustment as of 0 January) - 32 bits
- daylight bias (adjustment in Northern summer) - 32 bits
- the fields of the two SYSTEMTIME structures, in order.
73 de ke9tv/2, Kevin KENNY GE Corporate Research & Development
kennykb at crd.ge.com P. O. Box 8, Bldg. K-1, Rm. 5B36A
Schenectady, New York 12301-0008 USA
More information about the tz