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Données des villes par GeoNames (CC BY 4.0). Données de fuseaux horaires de la base de données des fuseaux horaires de l'IANA.

  1. WorldClockTools
  2. Convertisseur de Fuseau Horaire
  3. GMT -> MDT

Timezone converter

Convertisseur GMT vers MDT.

GMT → MDTGap: -7h1h 9-5 overlap

GMT to MDT currently uses Greenwich Mean Time in Europe/London and Mountain Time in America/Ciudad_Juarez as the live reference pair, with a -7h live gap. GMT to MDT matters whenever London and Ciudad Juárez need to coordinate across a -7h gap. The GMT side covers United Kingdom and Ivory Coast, while MDT covers Mexico and Canada — 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 GMT and MDT 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: MDT → GMT

From

GMT

Greenwich Mean Time

Europe/London · GMT+1 +01:00

--:--:--

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

To

MDT

Mountain Time

America/Ciudad_Juarez · MDT -06:00

--:--:--

Major markets in this grouping include Ciudad Juárez, Calgary, Edmonton, Denver.

Scheduling snapshot

Current gap

-7h

GMT +01:00 vs MDT -06:00

9-to-5 overlap

1h

GMT 4:00 PM previous day to 5:00 PM previous day

Representative countries

United Kingdom, Ivory Coast, and Mali / Mexico, Canada, and United States

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

Pair context

GMT (London, +01:00) to MDT (Ciudad Juárez, -06:00) is currently a -7h conversion. Live coverage on the GMT side is anchored by London, Abidjan, Bamako, and Dakar; the MDT side draws from Ciudad Juárez, Calgary, Edmonton, and Denver.

GMT to MDT matters whenever London and Ciudad Juárez need to coordinate across a -7h gap. The GMT side covers United Kingdom and Ivory Coast, while MDT covers Mexico and Canada — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

This pair crosses the Atlantic, with one side in the Americas and the other in Europe or Africa. The -7h gap is small enough that there is still a real shared midday window, which is why transatlantic finance, broadcasting, and conference scheduling lean on this conversion.

Both GMT (Europe/London) and MDT (America/Ciudad_Juarez) 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.

GMT and MDT sit exactly 7h apart, leaving roughly 1h of usable 9-to-5 overlap. That window is tight enough that recurring meetings tend to pile onto the same hour, which is why teams with this pair often consolidate cross-region work into a single anchor meeting per day.

Market coverage on both sides

GMT coverage on this page is led by London, United Kingdom, Abidjan, Ivory Coast, Bamako, Mali, and Dakar, Senegal, with 2 more in the live dataset. That mix is what makes GMT feel anchored to European working-day rhythms in practice rather than just an abbreviation on a chart.

MDT coverage is led by Ciudad Juárez, Mexico, Calgary, Canada, Edmonton, Canada, and Denver, United States, with 2 more anchoring the wider label family. Combined with the GMT side, this conversion ends up describing transatlantic finance, broadcast scheduling, and same-day cross-border product launches.

Digit-Roll Converter

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

FROM
1
4
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3
0
TO
0
8
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Common meeting times

GMT to MDT meeting times

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

GMTMDTDay relation
9:00 AM2:00 AMSun, Apr 26same day
12:00 PM5:00 AMSun, Apr 26same day
3:00 PM8:00 AMSun, Apr 26same day
6:00 PM11:00 AMSun, Apr 26same day
9:00 PM2:00 PMSun, Apr 26same day

MDT to GMT meeting times

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

MDTGMTDay relation
9:00 AM4:00 PMSun, Apr 26same day
12:00 PM7:00 PMSun, Apr 26same day
3:00 PM10:00 PMSun, Apr 26same day
6:00 PM1:00 AMMon, Apr 27next day
9:00 PM4:00 AMMon, Apr 27next day

Operational notes

GMT to MDT ranges from GMT 9:00 AM (which lands at MDT 2:00 AM) through GMT 9:00 PM (MDT 2:00 PM). The -7h gap means most GMT mornings collide with MDT late evening or after-hours, so this direction tends to be used for end-of-day handoffs rather than live calls.

MDT to GMT ranges from MDT 9:00 AM (which lands at GMT 4:00 PM) through MDT 9:00 PM (GMT 4:00 AM). The -7h gap means most MDT mornings collide with GMT late evening or after-hours, so this direction tends to be used for end-of-day handoffs rather than live calls.

Popular hour answers

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

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

What is 8 AM GMT in MDT?

8 AM GMT = 1:00 AM MDT (01:00). On today's live calendar that lands on Sun, Apr 26 in MDT, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 AM GMT in MDT?

9 AM GMT = 2:00 AM MDT (02:00). On today's live calendar that lands on Sun, Apr 26 in MDT, which means the answer is a same day conversion rather than a static offset lookup.

What is 10 AM GMT in MDT?

10 AM GMT = 3:00 AM MDT (03:00). On today's live calendar that lands on Sun, Apr 26 in MDT, which means the answer is a same day conversion rather than a static offset lookup.

What is 11 AM GMT in MDT?

11 AM GMT = 4:00 AM MDT (04:00). On today's live calendar that lands on Sun, Apr 26 in MDT, which means the answer is a same day conversion rather than a static offset lookup.

What is 12 PM GMT in MDT?

12 PM GMT = 5:00 AM MDT (05:00). On today's live calendar that lands on Sun, Apr 26 in MDT, which means the answer is a same day conversion rather than a static offset lookup.

What is 1 PM GMT in MDT?

1 PM GMT = 6:00 AM MDT (06:00). On today's live calendar that lands on Sun, Apr 26 in MDT, which means the answer is a same day conversion rather than a static offset lookup.

What is 2 PM GMT in MDT?

2 PM GMT = 7:00 AM MDT (07:00). On today's live calendar that lands on Sun, Apr 26 in MDT, which means the answer is a same day conversion rather than a static offset lookup.

What is 3 PM GMT in MDT?

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

What is 4 PM GMT in MDT?

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

What is 5 PM GMT in MDT?

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

What is 6 PM GMT in MDT?

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

What is 9 PM GMT in MDT?

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

Overlap window and DST radar

The live gap is -7h right now, based on Europe/London at +01:00 and America/Ciudad_Juarez at -06:00. The zones change on different dates, so there is a DST mismatch window between October 25, 2026 and November 1, 2026. During that stretch the gap shifts to -6h before settling at -7h.

The most usable workday block right now is about 1 hours: GMT 4:00 PM previous day to 5:00 PM previous day, which lines up with MDT 9:00 AM previous day to 10:00 AM previous day.

Europe/London changes on October 25, 2026 at about 1:08 AM, moving from +00:00 to +00:00.
America/Ciudad_Juarez changes on November 1, 2026 at about 1:38 AM, moving from -07:00 to -07:00.

Reference zones

Europe/London

GMT+1 · +01:00

America/Ciudad_Juarez

MDT · -06:00

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

Tableau de Conversion

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

Top cities using GMT

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

LondonUnited KingdomAbidjanIvory CoastBamakoMaliDakarSenegalKumasiGhanaOuagadougouBurkina FasoLoméTogoAccraGhanaConakryGuineaCamayenneGuinea

Top cities using MDT

Countries represented here include Mexico, Canada, and United States.

Ciudad JuárezMexicoCalgaryCanadaEdmontonCanadaDenverUnited StatesEl PasoUnited StatesAlbuquerqueUnited StatesColorado SpringsUnited StatesAuroraUnited StatesSalt Lake CityUnited StatesFort CollinsUnited States

FAQ

How many hours is MDT ahead of GMT?
MDT is currently -7h relative to GMT, using Europe/London and America/Ciudad_Juarez as the live reference zones on this page.
What is the best workday overlap between GMT and MDT?
The current 9-to-5 overlap is about 1 hours: GMT 4:00 PM previous day to 5:00 PM previous day, which matches MDT 9:00 AM previous day to 10:00 AM previous day.
Does the GMT-MDT time difference change during DST?
The live gap is -7h right now, based on Europe/London at +01:00 and America/Ciudad_Juarez at -06:00. The zones change on different dates, so there is a DST mismatch window between October 25, 2026 and November 1, 2026. During that stretch the gap shifts to -6h before settling at -7h.
Which cities commonly use GMT and MDT?
GMT commonly covers cities such as London, Abidjan, Bamako, and Dakar, while MDT commonly covers cities such as Ciudad Juárez, Calgary, Edmonton, and Denver.
Should I use GMT/MDT or exact IANA zones?
Use the abbreviations for a quick read, but use exact IANA zones such as Europe/London and America/Ciudad_Juarez when you need something precise in software, travel plans, or long-range scheduling.
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Conversions Associées

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

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