Convert Alaska Standard Time to Greenwich Mean Time
Instantly convert Alaska Standard Time (AKST) to Greenwich Mean Time (GMT) with our free online calculator.
Alaska Standard Time
08:20:50 PM
Tue, Jun 23 (AKST)
Greenwich Mean Time
05:20:50 AM
Wed, Jun 24 (GMT)
Convert a Specific Time
24-Hour Comparison
| AKST | GMT |
|---|---|
| 12:00 AM | 9:00 AM |
| 1:00 AM | 10:00 AM |
| 2:00 AM | 11:00 AM |
| 3:00 AM | 12:00 PM |
| 4:00 AM | 1:00 PM |
| 5:00 AM | 2:00 PM |
| 6:00 AM | 3:00 PM |
| 7:00 AM | 4:00 PM |
| 8:00 AM | 5:00 PM |
| 9:00 AM | 6:00 PM |
| 10:00 AM | 7:00 PM |
| 11:00 AM | 8:00 PM |
| 12:00 PM | 9:00 PM |
| 1:00 PM | 10:00 PM |
| 2:00 PM | 11:00 PM |
| 3:00 PM | 12:00 AM(+1d) |
| 4:00 PM | 1:00 AM(+1d) |
| 5:00 PM | 2:00 AM(+1d) |
| 6:00 PM | 3:00 AM(+1d) |
| 7:00 PM | 4:00 AM(+1d) |
| 8:00 PM | 5:00 AM(+1d) |
| 9:00 PM | 6:00 AM(+1d) |
| 10:00 PM | 7:00 AM(+1d) |
| 11:00 PM | 8:00 AM(+1d) |
How to Convert Alaska Standard Time to Greenwich Mean Time
Formula
To convert Alaska Standard Time (AKST) to Greenwich Mean Time (GMT): Convert AKST to GMT
About Alaska Standard Time (AKST)
Alaska Standard Time (AKST, IANA: America/Anchorage and America/Juneau) is the time zone for most of the State of Alaska, set at UTC-9:00. AKST is observed from the first Sunday in November to the second Sunday in March per the Uniform Time Act of 1966 + Energy Policy Act of 2005; Alaska switches to Alaska Daylight Time (AKDT = UTC-8:00) for the remainder of the year. The vast Alaska time zone covers ~3,200 km east-to-west — from Ketchikan to Atka in the Aleutians — and is the only US time zone that spans more than 1,000 miles longitudinally, meaning solar-noon in different Alaska cities varies by over an hour from local clock time. Major population centers: Anchorage (~290,000), Fairbanks (~95,000), Juneau state capital (~32,000). Used in coordination of cruise-ship schedules through the Inside Passage, North Slope oil-pipeline operations, US Air Force JBER and Eielson AFB activities, and Alaska commercial fishing season openings managed by ADF&G.
About Greenwich Mean Time (GMT)
Greenwich Mean Time (GMT, IANA: Europe/London) is the historic and current civil time of the United Kingdom (during winter), Ireland (during winter), Portugal mainland (during winter), Iceland (year-round), and most West African countries. GMT is set at UTC+0 — the time on the Prime Meridian (0° longitude) running through the Royal Observatory in Greenwich, southeast London. Established as the global time reference by the 1884 International Meridian Conference in Washington DC, GMT served as the world's primary civil-time reference from 1884 until 1972 when UTC (Coordinated Universal Time) was adopted as the new precision standard. The UK switches from GMT to British Summer Time (BST = UTC+1) at 01:00 GMT on the last Sunday of March and back to GMT at 02:00 BST on the last Sunday of October per EU Directive 2000/84/EC (UK retained this schedule after Brexit). GMT affects: London Stock Exchange (LSE) trading hours, BBC World Service broadcast time-stamps, all aviation NOTAMs and weather METARs which use UTC = GMT, and ICAO + IMO worldwide maritime/aviation coordination.