Microsoft Time Zone Editor (ver 5.0) Abandoned Freeware Microsoft in their "great wisdom" assumed that daylight savings time was a relatively constant event (even though their are entire books that list annual changes to daylight savings time over the years). Therefore, Microsoft did not include with Windows 2000 any way to make adjustments to daylight savings time if is should change. To correct their error, Microsoft belatedly released this Time Zone Editor Utility. This simple program allows you to manually alter the start and end dates for daylight savings time for any timezone. Read the "Instructions.txt" file in the TZEdit folder for a step-by-step walkthough, with an example of making the USA 2007 time change.