AddMilliseconds(Number)

Adds the specified number of milliseconds to the Time value.

TimeField1.AddMilliseconds(60000) will return a new time that is exactly 1 minute in the future from TimeField1.

You can also use negative numbers with AddMiliseconds if you want to get a time that is a certain number of Millisecondsin the past. For example, TimeField1.AddMilliseconds(-120000) would give you a time of 2 minutes ago.