A world clock displays the current time in various cities and time zones around the globe simultaneously, helping coordinate international schedules.

There are 24 primary time zones, each approximately 15 degrees of longitude apart. However, some countries use half-hour or quarter-hour offsets.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. It's equivalent to GMT (Greenwich Mean Time).

Daylight Saving Time (DST) is the practice of advancing clocks during warmer months to extend evening daylight. Not all countries observe DST.

Use our Time Zone Converter tool above. Enter a time, select the "from" and "to" time zones, and click convert.

Time zones were created to standardize time across regions based on the Earth's rotation, with noon being when the sun is highest in the sky.