Although UTC (Universal Coordinated Time) has replaced GMT as the international time standard, GMT has remained a time zone and is the official civil time in the UK during the winter months.
It is also widely used in several areas of activity, such as aviation and broadcasting. There is no time difference between GMT and UTC. Apart from UK, other countries use as well GMT as their time zone.
Each map section (colour coded) shows current time in that region. Some states inside the same time zone do not observe the Daylight Saving Time (DST) regime.
Abbreviations for standard time zones: AWST = Australian Western Standard Time; ACST = Australian Central Standard Time; AEST = Australian Eastern Standard Time