Tzedit is a freeware utility that allows you to edit time zone information in Windows. All parameters can be edited such as time zone name and information, time zone location on the world map (MapID), Microsoft Time Zone Index, MUI strings for time zone name and Dynamic DST settings. This utility works on any version of Windows from Windows 95 to Windows 8.

Benefits:
1) Edit time zone information on any version of Windows;
2) Edit time zone location on the world map (MapID);
3) Edit Microsoft Time Zone Index (Index and IndexMapping);
4) Edit MUI strings for time zone name;
5) Edit time zone Dynamic DST settings;
6) Enjoy XP-like interface when editing time zone information on Windows 9x/NT/2000;
7) View internal useful for developers data.