Use this window to set the date and time to any point from 1900 to 2099.
The "24 hour" checkbox switches between 24 hour mode and 12 hour AM/PM mode.
A checkbox for controlling daylight saving time (DST) will show only if the current location is not set for auto-DST.
Pressing "OK" accepts the new date and time.
Pressing "Set to computer date/time" sets the local date/time
to the computer date/time.
Pressing "Cancel" rejects any changes.