What is the difference between PST and UTC?

UTC is 8 hours ahead of PST. PST means Pacific Standard Time at UTC-8, and UTC means Coordinated Universal Time at UTC+0.

Which time zone does this page use for PST?

America/Los_Angeles. An abbreviation is not a time zone — it is a label a zone wears for part of the year — so every calculation here uses a named IANA zone and says which one. If you are writing code, use America/Los_Angeles rather than the string "PST".

Does PST mean anything else?

Yes: Philippine Standard Time at UTC+8. Sixteen hours ahead of the American PST, and it never changes its clocks.

Is PST a daylight saving abbreviation?

No. PST is the standard-time abbreviation. When daylight saving is in force, the same zone uses a different one.

PST to UTC

PST sits at UTC-8; UTC sits at UTC+0. That puts UTC 8 hours ahead of PST.

Convert a time

From

Date

Time

Converted time

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The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Computed on a date when PST is genuinely in force — using today would be wrong for half the year, because a standard-time abbreviation does not exist in summer.

PST	UTC
00:00	08:00
01:00	09:00
02:00	10:00
03:00	11:00
04:00	12:00
05:00	13:00
06:00	14:00
07:00	15:00
08:00	16:00
09:00	17:00
10:00	18:00
11:00	19:00
12:00	20:00
13:00	21:00
14:00	22:00
15:00	23:00
16:00	00:00next day
17:00	01:00next day
18:00	02:00next day
19:00	03:00next day
20:00	04:00next day
21:00	05:00next day
22:00	06:00next day
23:00	07:00next day

What these abbreviations actually are

	PST	UTC
Full name	Pacific Standard Time	Coordinated Universal Time
Representative zone	America/Los_Angeles	UTC
Offset	UTC-8	UTC+0
Seasonal	Standard time	Standard time
Zone changes in 2026	2	0
Other meanings	1	None in common use

Common questions

What is the difference between PST and UTC?: UTC is 8 hours ahead of PST. PST means Pacific Standard Time at UTC-8, and UTC means Coordinated Universal Time at UTC+0.
Which time zone does this page use for PST?: America/Los_Angeles. An abbreviation is not a time zone — it is a label a zone wears for part of the year — so every calculation here uses a named IANA zone and says which one. If you are writing code, use America/Los_Angeles rather than the string "PST".
Does PST mean anything else?: Yes: Philippine Standard Time at UTC+8. Sixteen hours ahead of the American PST, and it never changes its clocks.
Is PST a daylight saving abbreviation?: No. PST is the standard-time abbreviation. When daylight saving is in force, the same zone uses a different one.