WEST to GMT: WEST is 1 hour ahead of GMT
Western European Time is 1 hour ahead of Greenwich Mean Time right now. It is 4:45 am WEST in Lisbon and 3:45 am GMT in GMT.
Convert a specific time from WEST to GMT
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between WEST and GMT?
Greenwich Mean Time is 1 hour behind Western European Time. To go from WEST to GMT you subtract 1 hour. That gap is not fixed. Across 2026 the distance between these two zones takes 2 different values, from no difference to 1 hour, because Lisbon moves its clocks and GMT does not. This page recomputes it rather than assuming.
WEST to GMT conversion table
Every hour of Sunday, September 27, 2026 in Lisbon, with the matching reading in GMT. 1 of the 24 hours land on a different calendar date in GMT, which is the part people get wrong when they schedule across this pair.
| WEST | WEST 24h | GMT | GMT 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 11:00 pm | 23:00 | the previous day |
| 1:00 am | 01:00 | 12:00 am | 00:00 | same day |
| 2:00 am | 02:00 | 1:00 am | 01:00 | same day |
| 3:00 am | 03:00 | 2:00 am | 02:00 | same day |
| 4:00 am | 04:00 | 3:00 am | 03:00 | same day |
| 5:00 am | 05:00 | 4:00 am | 04:00 | same day |
| 6:00 am | 06:00 | 5:00 am | 05:00 | same day |
| 7:00 am | 07:00 | 6:00 am | 06:00 | same day |
| 8:00 am | 08:00 | 7:00 am | 07:00 | same day |
| 9:00 am | 09:00 | 8:00 am | 08:00 | same day |
| 10:00 am | 10:00 | 9:00 am | 09:00 | same day |
| 11:00 am | 11:00 | 10:00 am | 10:00 | same day |
| 12:00 pm | 12:00 | 11:00 am | 11:00 | same day |
| 1:00 pm | 13:00 | 12:00 pm | 12:00 | same day |
| 2:00 pm | 14:00 | 1:00 pm | 13:00 | same day |
| 3:00 pm | 15:00 | 2:00 pm | 14:00 | same day |
| 4:00 pm | 16:00 | 3:00 pm | 15:00 | same day |
| 5:00 pm | 17:00 | 4:00 pm | 16:00 | same day |
| 6:00 pm | 18:00 | 5:00 pm | 17:00 | same day |
| 7:00 pm | 19:00 | 6:00 pm | 18:00 | same day |
| 8:00 pm | 20:00 | 7:00 pm | 19:00 | same day |
| 9:00 pm | 21:00 | 8:00 pm | 20:00 | same day |
| 10:00 pm | 22:00 | 9:00 pm | 21:00 | same day |
| 11:00 pm | 23:00 | 10:00 pm | 22:00 | same day |
What are the best hours to schedule a call between WEST and GMT?
7 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 10:00 am WEST to 5:00 pm WEST. In GMT that window reads 9:00 am to 4:00 pm. Outside it, one side is either not yet at their desk or already gone.
| WEST | GMT | Working hours | Note |
|---|---|---|---|
| 10:00 am | 9:00 am | both sides | mid morning in Lisbon, mid morning in GMT |
| 11:00 am | 10:00 am | both sides | mid morning in Lisbon, mid morning in GMT |
| 12:00 pm | 11:00 am | both sides | noon in Lisbon, mid morning in GMT |
| 1:00 pm | 12:00 pm | both sides | afternoon in Lisbon, noon in GMT |
| 2:00 pm | 1:00 pm | both sides | afternoon in Lisbon, afternoon in GMT |
| 3:00 pm | 2:00 pm | both sides | afternoon in Lisbon, afternoon in GMT |
| 4:00 pm | 3:00 pm | both sides | afternoon in Lisbon, afternoon in GMT |
Does daylight saving change WEST to GMT?
Western European Time is currently on WEST and changes next on Sunday, October 25, 2026, when the clock falls back from 1:59 am to 1:00 am and the offset moves from UTC+1 to UTC+0.
Greenwich Mean Time does not move its clocks at all, so its UTC+0 offset holds every day of the year.
Because the two sides do not move together, the answer to this conversion changes during the year. For part of the year the gap is no difference and for the rest it is 1 hour. The table above is built for today, not for an average day.
Is WEST ahead of or behind GMT?
WEST is ahead of GMT by 1 hour: when it is 12:00 pm in Lisbon, it is 11:00 am in GMT. One wrinkle worth knowing: WET and WEST are two names for the same zone, not two zones. Western European Time reads WET in winter and WEST in summer. When somebody types "wet to gmt" they nearly always mean the zone rather than the literal winter offset, so this page resolves WET to Europe/Lisbon and GMT to Etc/GMT and applies whichever offset is genuinely in force on the day.
Western European Time covers Lisbon, Porto and the Canary Islands, one hour behind most of the continent. Greenwich Mean Time covers identical to UTC as a clock reading, and a separate thing as a standard. The identifiers behind them are Europe/Lisbon and Etc/GMT, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is WEST in GMT?
- WEST is 1 hour ahead of GMT. 9:00 am WEST is 8:00 am GMT.
- How many hours ahead is GMT of WEST?
- GMT is 1 hour behind WEST. That varies across the year, between no difference and 1 hour.
- What time is it in GMT right now?
- 3:45 am GMT on Sunday, September 27, 2026.
- When can Lisbon and GMT meet during working hours?
- Between 10:00 am and 5:00 pm WEST, which is 9:00 am to 4:00 pm GMT.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so WEST and GMT are the abbreviations genuinely in force today rather than a fixed assumption.
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