Time zones are geographical regions that observe a uniform standard time for legal, commercial, and social purposes. The world is divided into 24 time zones, each of which is one hour different from the next. This system of time zones was developed in the late 19th century to help coordinate train schedules and other forms of transportation.
In 2025, the world will continue to use the same 24 time zones that are in use today. You can use a world clock or time zone converter to find the current time in any time zone around the world.