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城市資料來源:GeoNames(CC BY 4.0)。時區資料來源:IANA 時區資料庫。

  1. WorldClockTools
  2. 時區轉換器
  3. WEST -> GMT

Timezone converter

WEST到GMT轉換器.

WEST → GMTGap: +0h8h 9-5 overlap

WEST to GMT currently uses Western European Time in Africa/Casablanca and Greenwich Mean Time in Europe/London as the live reference pair, with a +0h live gap. WEST to GMT matters whenever Casablanca and London need to coordinate across a +0h gap. The WEST side covers Morocco and Portugal, while GMT covers United Kingdom and Ivory Coast — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

Last updated Apr 26, 2026. Offset math, DST behavior, and city coverage on both sides are refreshed from the live timezone dataset during the page revalidation window.

How this is calculated

How we calculate this
The current offset for each abbreviation is resolved against the live IANA timezone rules. Conversion accounts for DST transitions on both sides, so the gap between WEST and GMT can change by an hour twice a year.
Data sources
IANA Time Zone Database (offsets, DST). City attribution from GeoNames (CC BY 4.0).
Update cadence
Page regenerates daily; live offset values reflect the moment the page is rendered.
Reverse: GMT → WEST

From

WEST

Western European Time

Africa/Casablanca · GMT+1 +01:00

--:--:--

Major markets in this grouping include Casablanca, Rabat, Fes, Tangier.

To

GMT

Greenwich Mean Time

Europe/London · GMT+1 +01:00

--:--:--

Major markets in this grouping include London, Abidjan, Bamako, Dakar.

Scheduling snapshot

Current gap

+0h

WEST +01:00 vs GMT +01:00

9-to-5 overlap

8h

WEST 9:00 AM previous day to 5:00 PM previous day

Representative countries

Morocco, Portugal, and Spain / United Kingdom, Ivory Coast, and Mali

Based on the busiest city and zone usage found in the current dataset.

Pair context

WEST (Casablanca, +01:00) to GMT (London, +01:00) is currently a +0h conversion. Live coverage on the WEST side is anchored by Casablanca, Rabat, Fes, and Tangier; the GMT side draws from London, Abidjan, Bamako, and Dakar.

WEST to GMT matters whenever Casablanca and London need to coordinate across a +0h gap. The WEST side covers Morocco and Portugal, while GMT covers United Kingdom and Ivory Coast — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

The pair sits +0h apart across Africa and Europe, which usually allows a meaningful shared workday on at least one end.

Both WEST (Africa/Casablanca) and GMT (Europe/London) observe daylight saving, but the shift dates do not always align. Expect short mismatch windows in spring and autumn when one side has changed and the other has not, which moves the live gap by an hour for several weeks at a time.

WEST and GMT sit exactly 0h apart, leaving a generous 8h of shared 9-to-5 time. With that much overlap, this pair behaves almost like a single workday, so meeting times are negotiable rather than forced into a narrow corner of the calendar.

Market coverage on both sides

WEST coverage on this page is led by Casablanca, Morocco, Rabat, Morocco, Fes, Morocco, and Tangier, Morocco, with 2 more in the live dataset. That mix is what makes WEST feel anchored to African business hubs in practice rather than just an abbreviation on a chart.

GMT coverage is led by London, United Kingdom, Abidjan, Ivory Coast, Bamako, Mali, and Dakar, Senegal, with 2 more anchoring the wider label family. Combined with the WEST side, this conversion ends up describing regional business coordination where the gap is small enough that meetings stay inside normal hours on both sides.

Digit-Roll Converter

Adjust the time — digits roll like an odometer. Swap button flips the zones.

FROM
1
4
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TO
1
5
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Common meeting times

WEST to GMT meeting times

Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.

WESTGMTDay relation
9:00 AM9:00 AMSun, Apr 26same day
12:00 PM12:00 PMSun, Apr 26same day
3:00 PM3:00 PMSun, Apr 26same day
6:00 PM6:00 PMSun, Apr 26same day
9:00 PM9:00 PMSun, Apr 26same day

GMT to WEST meeting times

Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.

GMTWESTDay relation
9:00 AM9:00 AMSun, Apr 26same day
12:00 PM12:00 PMSun, Apr 26same day
3:00 PM3:00 PMSun, Apr 26same day
6:00 PM6:00 PMSun, Apr 26same day
9:00 PM9:00 PMSun, Apr 26same day

Operational notes

WEST to GMT ranges from WEST 9:00 AM (which lands at GMT 9:00 AM) through WEST 9:00 PM (GMT 9:00 PM). WEST and GMT are close enough that this direction reads almost like a same-zone schedule — most WEST invites land on a sensible GMT hour without any extra effort.

GMT to WEST ranges from GMT 9:00 AM (which lands at WEST 9:00 AM) through GMT 9:00 PM (WEST 9:00 PM). GMT and WEST are close enough that this direction reads almost like a same-zone schedule — most GMT invites land on a sensible WEST hour without any extra effort.

Popular hour answers

These direct answers are here for the exact-intent searches people actually use, like “10 AM WEST to GMT” or “4 PM WEST in GMT”.

8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM9 PM

What is 8 AM WEST in GMT?

8 AM WEST = 8:00 AM GMT (08:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 AM WEST in GMT?

9 AM WEST = 9:00 AM GMT (09:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 10 AM WEST in GMT?

10 AM WEST = 10:00 AM GMT (10:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 11 AM WEST in GMT?

11 AM WEST = 11:00 AM GMT (11:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 12 PM WEST in GMT?

12 PM WEST = 12:00 PM GMT (12:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 1 PM WEST in GMT?

1 PM WEST = 1:00 PM GMT (13:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 2 PM WEST in GMT?

2 PM WEST = 2:00 PM GMT (14:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 3 PM WEST in GMT?

3 PM WEST = 3:00 PM GMT (15:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 4 PM WEST in GMT?

4 PM WEST = 4:00 PM GMT (16:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 5 PM WEST in GMT?

5 PM WEST = 5:00 PM GMT (17:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 6 PM WEST in GMT?

6 PM WEST = 6:00 PM GMT (18:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 PM WEST in GMT?

9 PM WEST = 9:00 PM GMT (21:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

Overlap window and DST radar

The live gap is +0h right now, based on Africa/Casablanca at +01:00 and Europe/London at +01:00. The zones change on different dates, so there is a DST mismatch window between October 25, 2026 and February 7, 2027. During that stretch the gap shifts to -1h before settling at +0h.

The most usable workday block right now is about 8 hours: WEST 9:00 AM previous day to 5:00 PM previous day, which lines up with GMT 9:00 AM previous day to 5:00 PM previous day.

Europe/London changes on October 25, 2026 at about 1:00 AM, moving from +01:00 to +00:00.
Africa/Casablanca changes on February 7, 2027 at about 2:30 AM, moving from +00:00 to +00:00.

Reference zones

Africa/Casablanca

GMT+1 · +01:00

Europe/London

GMT+1 · +01:00

These are the busiest live references selected from the abbreviation families on this page.

轉換表

WESTGMT
01:0001:00
02:0002:00
03:0003:00
04:0004:00
05:0005:00
06:0006:00
07:0007:00
08:0008:00
09:0009:00
10:0010:00
11:0011:00
12:0012:00
13:0013:00
14:0014:00
15:0015:00
16:0016:00
17:0017:00
18:0018:00
19:0019:00
20:0020:00
21:0021:00
22:0022:00
23:0023:00
00:0000:00

Top cities using WEST

Countries represented here include Morocco, Portugal, and Spain.

CasablancaMoroccoRabatMoroccoFesMoroccoTangierMoroccoMarrakeshMoroccoSaléMoroccoAgadirMoroccoMeknesMoroccoOujdaMoroccoLisbonPortugal

Top cities using GMT

Countries represented here include United Kingdom, Ivory Coast, and Mali.

LondonUnited KingdomAbidjanIvory CoastBamakoMaliDakarSenegalKumasiGhanaOuagadougouBurkina FasoLoméTogoAccraGhanaConakryGuineaCamayenneGuinea

FAQ

How many hours is GMT ahead of WEST?
GMT is currently +0h relative to WEST, using Africa/Casablanca and Europe/London as the live reference zones on this page.
What is the best workday overlap between WEST and GMT?
The current 9-to-5 overlap is about 8 hours: WEST 9:00 AM previous day to 5:00 PM previous day, which matches GMT 9:00 AM previous day to 5:00 PM previous day.
Does the WEST-GMT time difference change during DST?
The live gap is +0h right now, based on Africa/Casablanca at +01:00 and Europe/London at +01:00. The zones change on different dates, so there is a DST mismatch window between October 25, 2026 and February 7, 2027. During that stretch the gap shifts to -1h before settling at +0h.
Which cities commonly use WEST and GMT?
WEST commonly covers cities such as Casablanca, Rabat, Fes, and Tangier, while GMT commonly covers cities such as London, Abidjan, Bamako, and Dakar.
Should I use WEST/GMT or exact IANA zones?
Use the abbreviations for a quick read, but use exact IANA zones such as Africa/Casablanca and Europe/London when you need something precise in software, travel plans, or long-range scheduling.
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相關轉換

EST → GMTPST → GMTCST → GMTMST → GMTGMT → UTCGMT → ISTGMT → CETGMT → CESTGMT → JSTGMT → AESTGMT → AEDTGMT → BST

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