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Timezone Prime

PST to GMT converter

Convert Pacific Time (PST/PDT) to Greenwich Mean Time (GMT), with daylight saving applied for the exact date you pick.

From

Tue, Oct 27

To

Tue, Oct 27 Same day

PDT 9 to 5 GMT 9 to 5

From zone
Pacific Daylight Time
Offset and clock
UTC−7 Daylight saving time
IANA name
America/Los_Angeles
To zone
Coordinated Universal Time
Offset and clock
UTC+0 No daylight saving time
IANA name
Etc/GMT

GMT is 7 hours ahead of PDT.

Time difference
GMT is 7 hours ahead of PDT for most of the year (238 days in 2026). The gap is 8 hours for about 18 weeks in 2026.
Meeting window
Working days of 9 AM to 5 PM overlap from 9:00 AM to 10:00 AM PDT, which is 4:00 PM to 5:00 PM GMT while PDT and GMT apply.
Daylight saving
Pacific Time changes its clocks twice a year; Greenwich Mean Time does not.

The same conversion works for every city on these clocks, such as California to Greenwich and Los Angeles to Greenwich.

Where PST and GMT apply

Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.

  • Pacific Time
  • Greenwich Mean Time
  • Same UTC offset right now, different zone rules

Drag to pan. Ctrl and scroll, or pinch, to zoom. Boundaries: timezone-boundary-builder, © OpenStreetMap contributors

Hour by hour

Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.

Shaded rows fall inside working hours in both places.

Hourly comparison of the two time zones. Choose a time to load it in the converter.
Los Angeles (PDT) Greenwich (GMT) Working hours
12:00 AM 7:00 AM
1:00 AM 8:00 AM
2:00 AM 9:00 AM
3:00 AM 10:00 AM
4:00 AM 11:00 AM
5:00 AM 12:00 PM
6:00 AM 1:00 PM
7:00 AM 2:00 PM
8:00 AM 3:00 PM
9:00 AM 4:00 PM Both working
10:00 AM 5:00 PM
11:00 AM 6:00 PM
12:00 PM 7:00 PM
1:00 PM 8:00 PM
2:00 PM 9:00 PM
3:00 PM 10:00 PM
4:00 PM 11:00 PM
5:00 PM 12:00 AM next day
6:00 PM 1:00 AM next day
7:00 PM 2:00 AM next day
8:00 PM 3:00 AM next day
9:00 PM 4:00 AM next day
10:00 PM 5:00 AM next day
11:00 PM 6:00 AM next day

PST to GMT conversion table

Every hour of the Pacific Time day, plus the common half hours, and their GMT equivalents. The second column covers the part of the year when the clocks are on a different gap.

PST to GMT conversion table
Pacific Time GMT 7 h ahead, most of the year (238 days in 2026) GMT 8 h ahead, about 18 weeks in 2026
12:00 AM 7:00 AM8:00 AM
1:00 AM 8:00 AM9:00 AM
2:00 AM 9:00 AM10:00 AM
3:00 AM 10:00 AM11:00 AM
4:00 AM 11:00 AM12:00 PM
5:00 AM 12:00 PM1:00 PM
6:00 AM 1:00 PM2:00 PM
7:00 AM 2:00 PM3:00 PM
8:00 AM 3:00 PM4:00 PM
9:00 AM 4:00 PM5:00 PM
9:30 AM 4:30 PM5:30 PM
10:00 AM 5:00 PM6:00 PM
10:30 AM 5:30 PM6:30 PM
11:00 AM 6:00 PM7:00 PM
11:30 AM 6:30 PM7:30 PM
12:00 PM 7:00 PM8:00 PM
12:30 PM 7:30 PM8:30 PM
1:00 PM 8:00 PM9:00 PM
1:30 PM 8:30 PM9:30 PM
2:00 PM 9:00 PM10:00 PM
2:30 PM 9:30 PM10:30 PM
3:00 PM 10:00 PM11:00 PM
3:30 PM 10:30 PM11:30 PM
4:00 PM 11:00 PM12:00 AM (next day)
4:30 PM 11:30 PM12:30 AM (next day)
5:00 PM 12:00 AM (next day)1:00 AM (next day)
5:30 PM 12:30 AM (next day)1:30 AM (next day)
6:00 PM 1:00 AM (next day)2:00 AM (next day)
7:00 PM 2:00 AM (next day)3:00 AM (next day)
8:00 PM 3:00 AM (next day)4:00 AM (next day)
9:00 PM 4:00 AM (next day)5:00 AM (next day)
10:00 PM 5:00 AM (next day)6:00 AM (next day)
11:00 PM 6:00 AM (next day)7:00 AM (next day)

How the gap changes in 2026 and 2027

Each row is a stretch of days with one constant difference, split at every clock change.

Time difference periods between PST and GMT
Dates PST GMT Difference
Thu, Jan 1, 2026 until Sun, Mar 8, 2026 PST GMT GMT 8 h ahead
Sun, Mar 8, 2026 until Sun, Nov 1, 2026 PDT GMT GMT 7 h ahead
Sun, Nov 1, 2026 until Sun, Mar 14, 2027 PST GMT GMT 8 h ahead
Sun, Mar 14, 2027 until Sun, Nov 7, 2027 PDT GMT GMT 7 h ahead
Sun, Nov 7, 2027 until Sat, Jan 1, 2028 PST GMT GMT 8 h ahead

Upcoming clock changes

  1. Pacific Time Sunday, November 1, 2026: at 2:00 AM clocks go back 1 hour to 1:00 AM
  2. Pacific Time Sunday, March 14, 2027: at 2:00 AM clocks go forward 1 hour to 3:00 AM
  3. Pacific Time Sunday, November 7, 2027: at 2:00 AM clocks go back 1 hour to 1:00 AM
  4. Pacific Time Sunday, March 12, 2028: at 2:00 AM clocks go forward 1 hour to 3:00 AM

About the two zones

Pacific Time (PST / PDT)

Pacific Time follows the clock in Los Angeles: Pacific Standard Time (PST, UTC−8) in winter and Pacific Daylight Time (PDT, UTC−7) during US daylight saving time.

IANA zone
America/Los_Angeles
Offset
UTC−8 standard, UTC−7 daylight saving
Used in
the US West Coast and British Columbia
Major cities
Los Angeles, San Francisco, Seattle, Vancouver, Las Vegas, Portland

PST is often used loosely for Pacific Time all year. In summer the correct abbreviation is PDT; the converter uses whichever applies on your date.

Greenwich Mean Time (GMT)

Greenwich Mean Time is UTC+0 and, for everyday purposes, the same clock as UTC. It does not shift for daylight saving time.

IANA zone
Etc/GMT
Offset
UTC+0 all year
Used in
Iceland and much of West Africa keep this offset all year
Major cities
Reykjavík, Accra, Dakar, Abidjan

The UK uses GMT only in winter and British Summer Time (BST, UTC+1) in summer. For London time, use the UK time pages.

PST and GMT, answered

What is the time difference between PST and GMT?

GMT is 7 hours ahead of PDT for most of the year (238 days in 2026). The gap is 8 hours for about 18 weeks in 2026.

How do I work out the time in Greenwich from PST?

Greenwich uses Greenwich Mean Time. GMT is 7 hours ahead of PDT for most of the year (238 days in 2026). The gap is 8 hours for about 18 weeks in 2026. Type any PST time into the PST to GMT converter to see the Greenwich time for any date.

What is 9:00 AM PST in GMT?

9:00 AM PDT is 4:00 PM GMT for most of the year (238 days in 2026). 9:00 AM PST is 5:00 PM GMT for about 18 weeks in 2026.

What is 12:00 PM PST in GMT?

12:00 PM PDT is 7:00 PM GMT for most of the year (238 days in 2026). 12:00 PM PST is 8:00 PM GMT for about 18 weeks in 2026.

What is 10:00 AM PST in GMT?

10:00 AM PDT is 5:00 PM GMT for most of the year (238 days in 2026). 10:00 AM PST is 6:00 PM GMT for about 18 weeks in 2026.

What is 5:00 PM PST in GMT?

5:00 PM PDT is 12:00 AM (next day) GMT for most of the year (238 days in 2026). 5:00 PM PST is 1:00 AM (next day) GMT for about 18 weeks in 2026.

Is GMT ahead of PST, and by how many hours?

Yes. GMT is 7 hours ahead of PDT for most of the year (238 days in 2026). The gap is 8 hours for about 18 weeks in 2026.

What is a good meeting time for PST and GMT?

Working days of 9 AM to 5 PM overlap from 9:00 AM to 10:00 AM PDT, which is 4:00 PM to 5:00 PM GMT while PDT and GMT apply.

Does daylight saving time affect PST to GMT?

Pacific Time changes its clocks twice a year; Greenwich Mean Time does not. The next change is on Sunday, November 1, 2026 in Pacific Time.

Which PST does the PST to GMT converter use?

PST is often used loosely for Pacific Time all year. In summer the correct abbreviation is PDT; the converter uses whichever applies on your date.

Which GMT does the PST to GMT converter use?

The UK uses GMT only in winter and British Summer Time (BST, UTC+1) in summer. For London time, use the UK time pages.

Related conversions

From Pacific Time

To Greenwich Mean Time