travel east or west to a dfferent country, you have to change the time on your watch. This happens because the tums, so when is daytime in some parts of the world, is night-time in others divide the Earth into 24 time zones, one for each hour of the day. All the places in the same time zone have the same time start counting from Greenwich. England when it is 12 pm in Greenwich and you travel east lo a place in the next zone, Rome for example, is t pm you travel west to a place in the next zone, the Azores for example s 11 am