UTC time /
GMT time
US time zones: EST, CST, MST, PST, HST, AKST
Popular time difference:
Area codes
Reverse area code lookup
US time zones: EST, CST, MST, PST, HST, AKST
Popular time difference:
- SGT vs GMT
- London Manila time difference
- PST to Manila time
- London time vs Kuala Lumpur time
- US - UK time difference
- New York and Sydney time difference
Area codes
Reverse area code lookup
World Clock
About Time Zones:
The time in regions (countries and cities) is expressed through time zones.
Earth is divided into a number of time zones.
Some countries such as United States and Canada have multiple time zones since they span over a wide range of longitudes whereas other countries like India and Germany have only one time zone.
Time zones are calculated as offset of UTC and in some cities these offsets change when DST is observed.
About GMT:
GMT (Greenwich Mean Time) used to be the international standard of civil time. In 1972 it was replaced by UTC (Coordinated Universal Time). GMT is the clock time at the Royal Observatory in Greenwich, London.
It is measured on the Earth's zero degree line of longitude.
Places east of the Greenwich Meridian have the local time ahead of GMT (e.g. Singapore local time is GMT+8).
Places west of the Greenwich Meridian have the local time behind GMT (e.g. Los Angeles local time is GMT-8 in summer). GMT has no offset from UTC.
GMT is in use during standard time in Burkina Faso, Cote DIvoire, Gambia, Ghana, Greenland, Guinea, Guinea Bissau, Iceland, Ireland, Isle Of Man, Liberia, Mali, Mauritania, Sao Tome And Principe, Senegal, Sierra Leone, Togo and The United Kingdom.
About UTC:
UTC (Coordinated Universal Time) is a standard used to set all time zones. UTC is maintained by The International Bureau of Weights and Measures (Bureau international des poids et mesures - BIPM).
UTC is sometimes known as Z Time or Zulu Time.
UTC is the local time at Greenwich England. Time in other cities is the UTC plus or minus the local Time Zone (adds 1 hour to the local standard time when Daylight Saving Time is observed).
World Clock, Time Zones Reloj Mundial, Zonas Horarias Relógio Mundial, Fusos Horários Mundiais Horloge mondiale, fuseaux horaires Weltzeituhr, Zeitzonen Orologio Mondiale, Fusi Orari