Greenwich Mean Time (gmt) is used in United Kingdom. The IANA timezone identifier is Europe/London.

Pacific Daylight Time (pdt) is used in USA. The IANA timezone identifier is America/Los_Angeles.

GMT to PDT Time Converter

Greenwich Mean Time → Pacific Daylight Time

GMT = UTC+1PDT = UTC-7

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

PDT (Los Angeles)

USA · -8h🔔 Public Holiday in 7d — Independence Day

01:00

New York

USA · -5h

04:00

Tokyo

Japan · +8h

17:00

Dubai

United Arab Emirates · +3h

12:00

Sydney

Australia · +9h

18:00

GMT (London) to PDT (Los Angeles) — exact time difference

GMT (London) is 8 hours ahead of PDT (Los Angeles). When GMT (London) clocks hit noon, PDT (Los Angeles) reads 04:00.

GMT (London) is in the Europe/London timezone. PDT (Los Angeles) is in America/Los_Angeles. The difference is 8 hours.

Working hours overlap

GMT (London) and PDT (Los Angeles) have no shared working hours under a standard 9:00–17:00 schedule. One side will always need to join at an off-hour.

When to schedule across time zones

Since GMT (London) and PDT (Los Angeles) don't share working hours, these are the most practical options available.

16:00 London / 08:00 Los Angeles⚡ One side off-hours

⚠️ 1h before working hours in Los Angeles

17:00 London / 09:00 Los Angeles⚡ One side off-hours

⚠️ 1h after working hours in London

15:00 London / 07:00 Los Angeles⚡ One side off-hours

⚠️ 2h before working hours in Los Angeles

Based on standard 09:00–17:00 working hours in each location's local time.

Holiday calendar for both locations

⚡ Both locations have upcoming holidays, check availability before scheduling.

GMT (London)6 holidays

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

Dec 25Christmas Day

PDT (Los Angeles)7 holidays

Jul 3Independence DaySOON

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

Nov 11Veterans Day

Working across GMT (London) and PDT (Los Angeles)

Working across GMT (London) (United Kingdom) and PDT (Los Angeles) (USA) is a challenge — the 8-hour difference means no shared business hours window under a standard schedule. Flexibility from at least one side is required.

💡 Best practice for cross-timezone meetings

⚡

When GMT (London) is at 16:00, PDT (Los Angeles) reads 08:00 — 1h before working hours in Los Angeles.

⚡

When GMT (London) is at 17:00, PDT (Los Angeles) reads 09:00 — 1h after working hours in London.

⚡

When GMT (London) is at 15:00, PDT (Los Angeles) reads 07:00 — 2h before working hours in Los Angeles.

Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in GMT (London). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

GMT (London) ↔ PDT (Los Angeles)

No overlap — one side will join outside working hours

GMT (London)

PDT (Los Angeles)

00:00

16:00-1dWorking

01:00

17:00-1d

02:00

18:00-1d

03:00

19:00-1d

04:00

20:00-1d

05:00

21:00-1d

06:00

22:00-1d

07:00

23:00-1d

08:00

00:00

09:00Working

01:00off

10:00Working

02:00off

11:00Working

03:00off

12:00Working

04:00off

13:00Working

05:00off

14:00Working

06:00off

15:00Working

07:00off

16:00Working

08:00off

17:00

09:00Working

18:00

10:00Working

19:00

11:00Working

20:00

12:00Working

21:00

13:00Working

22:00

14:00Working

23:00

15:00Working

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between gmt and pdt?

Greenwich Mean Time (gmt) is UTC+1 and Pacific Daylight Time (pdt) is UTC-7. The difference between them is 8 hours.

Where is gmt used?

Greenwich Mean Time (gmt) is used in United Kingdom and surrounding regions. The IANA timezone identifier is Europe/London.

Where is pdt used?

Pacific Daylight Time (pdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Los_Angeles.

How do I convert gmt to pdt?

Use the interactive converter above. Drag the time slider to any gmt time and the pdt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular GMT conversions

GMT → New York GMT → Tokyo GMT → Dubai GMT → Sydney GMT → Paris GMT → Berlin GMT → Singapore GMT → Los Angeles GMT → Toronto GMT → Mumbai

Popular PDT conversions

London → PDT New York → PDT Tokyo → PDT Dubai → PDT Sydney → PDT Paris → PDT Berlin → PDT Singapore → PDT Toronto → PDT Mumbai → PDT