📚 Time Zone Knowledge
What are Time Zones?
A time zone is a region of the Earth that uses the same standard time. The world is divided into 24 major time zones, each approximately 15 degrees of longitude apart. Time zones are based on Coordinated Universal Time (UTC), ranging from UTC-12 to UTC+12.
Difference Between UTC and GMT
UTC (Coordinated Universal Time): An atomic time standard that serves as the basis for global timekeeping.
GMT (Greenwich Mean Time): Solar time based on Earth's rotation. UTC has replaced GMT as the international standard.
Major Time Zones Explained
UTC+08:00 (East 8 Zone): Includes China, Singapore, Malaysia, etc. This is the most populous time zone in the world.
UTC+00:00 (Zero Time Zone): Passes through the Greenwich Observatory in London, also known as Greenwich Mean Time.
UTC-05:00 (West 5 Zone): Includes Eastern Standard Time, covering cities like New York and Washington D.C.
International Date Line
Located roughly along the 180° longitude line in the Pacific Ocean. Crossing this line eastward subtracts one day, while crossing westward adds one day. The UTC-12 time zone is where new days begin last on Earth.
Important Notes
1. This page displays 24 major time zones, each representing one full hour offset
2. Some countries use half-hour time zones (e.g., India UTC+5:30, Nepal UTC+5:45)
3. Daylight Saving Time changes are not considered in this display
4. For precise local time, please refer to official local time sources
5. Time zone data is for reference purposes and may be simplified