The world time map shows you the current time in all the countries of the world.
Our world is devided into different time zones.
The local time in each time zone is different.
East of the globe it is later, west it is earlier.
Some countries change their time during the "Daylight saving time" (DST), also known as the summer time.
All times on the map are in the "Coordinated Universal Time" (UTC) format. Basically the UTC is equal to the Greenwich Mean Time (GMT).
Compare time zones: Click on a country/time zone to select it. Move your mouse over a different region. In the pop-up you will see the time difference to the selected country.