Do you know what a time zone is, or which time zone you live in? In this video, you and your kids will learn all about time zones. ... <看更多>

Sometimes, a separate language-specific display name that can be presented to a user. One can determine the correct offset, given a time zone and a datetime. ... <看更多>

In the United States, with all its overseas territories, there are 9 time zones. Of these nine, four are in the contiguous United States. ... <看更多>