Greenwich Mean Time

The Prime Meridian at Greenwich, London is the reference for every time zone in the world.

What is Greenwich Mean Time (GMT)?

United Kingdom is now on GMT

5:08:20 AM 21/01/2022GMT +00:00

Time now in GMT-4

Military Time Zone name for GMT-4 is: Q-Quebec

Current time and conversions

Current Time in GMT-4

1:08:20 AM 21/01/2022GMT -04:00
5:08:20 AM 21/01/2022GMT +00:00

Time converter for time zone: GMT-4

Enter your location or any place of your choice for more comparisons.

TZGMT5:08 AM GMT +00:0021/01TZGMT-41:08 AM GMT -04:0021/01TZMy local time5:08 AM GMT +00:0021/01
My local time
05:07 am
12:00 | 12:00

Nowadays, Greenwich Mean Time, abbreviated as GMT, is a time zone designation rather than a time standard. Time difference between time zones can be expressed by the GMT or UTC hour difference. In the UTC standard, there is a commitment to keep within 0.9 seconds of GMT, so that every few years a leap second is applied to UTC. In the age of the internet, these small clock calibrations are conveniently distributed via NTP.

GMT-4 is 4 hours behind Greenwich Mean Time (GMT).

The GMT/UTC minus 4 hours offset is used by quite a few countries in the Caribbean, with no change throughout the year, as no Daylight Saving Time is applied. The Eastern Time Zone of USA and Canada only have the -4 offset when Daylight Saving Time is in use.

Time Zones and Daylight CurveClick to change location

The following countries or regions use GMT-4 either in Standard time or Daylight Saving Time as indicated.

Daylight Saving Time (DST)

Map of North America and the Caribbean

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