JSI Tip 7385. How do I display or set when Daylight Saving Time begins and ends information using the command-line?

The Resource Kits contain Timezone.exe, the Daylight Saving Time Update Utility. You can also download Timezone.exe.

When you type timezone /?, you receive:

Daylight Saving Time Update UtilityCopyright Microsoft Corporation 1997. All rights reservedTIMEZONE [/?] [/g | /s StartDate EndDate]  /?: Command line help  /g: Get the current timezone  /s: Set a new timezone  StartDate: Date that Daylight Saving Time begins  EndDate: Date that Daylight Saving Time ends  StartDate and EndDate use format:  Hour:DayOfWeek:Day:Month    Hour: 00-23 (specifies the hour)    DayOfWeek: 0-6 (specifies the day of the week; Sunday = 0, Monday = 1,                    and so on)    Day : 1-5 (specifies the occurrence of day in the month; 1 = first               occurrence of day, 2 = second occurrence of day, ..., 5 = last               occurrence of day)               (if DayOfWeek is Sunday, then 1 = first Sunday, 4 = fourth               Sunday, 5 = last Sunday)    Month: 01-12 (specifies the month; January = 1, February = 2, and so on)Example:  TIMEZONE /s 02:0:5:04 02:2:1:10    Timezone will be changed to:    Daylight Saving Time begins at 2:00 on last Sunday in April (02:0:5:04)    Daylight Saving Time ends at 2:00 on forth Tuesday in October (02:2:4:10)

When you type timezone /g, you receive a display similar to:

Current Timezone is :  Daylight Saving Time begins at 02:0:1:04  Daylight Saving Time ends at 02:0:5:10

If you wanted to parse this information in a batch script, you could:

for /f "Skip=1 Tokens=4,6-9 Delims=: " %%s in ('timezone /g') do if /i "%%s" EQU "begins" (   set shr=%%t&set sdow=%%u&set sday=%%v&set smon=%%w  ) ELSE (   set ehr=%%t&set edow=%%u&set eday=%%v&set emon=%%w )