Just like there are time zones across the United States, there are time zones around the world to ... International date line ...

Image caption, Maps of the world showing different ... Very large countries such as Australia or the USA are spread out across many time zones. Most smaller countries keep to the same time zone ...

Just like there are time zones across the United States, there are time zones around ... International date line zig zags through Pacific. See the map Since countries are free to choose which ...