What is the time difference between Los Angeles and Seoul?

Seoul is 16 hours ahead of Los Angeles. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call Seoul from Los Angeles?

Between 17:00–18:00 in Los Angeles, which is 09:00–10:00 in Seoul. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Los Angeles observe daylight saving time?

Yes. Los Angeles runs on UTC-8 in winter and UTC-7 in summer. The next change is on 2026-11-01, when clocks go back by 60 minutes.

Does Seoul observe daylight saving time?

No. Seoul stays on UTC+9 all year, so its clocks never move.

If it is midday in Los Angeles, what time is it in Seoul?

It is 04:00 in Seoul, and already the following day. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do Los Angeles and Seoul use?

Los Angeles uses America/Los_Angeles, currently UTC-7 (PDT), and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Los Angeles time to Seoul time

Seoul is 16 hours ahead of Los Angeles right now, so midday in Los Angeles lands in the small hours in Seoul.

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

The whole day mapped across: read down the left for Los Angeles, across for Seoul.

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

Daylight saving time

Los Angeles changes its clocks; Seoul does not. The difference between them therefore shifts by an hour twice a year.

Los Angeles

Observes daylight saving time

Standard: UTC-8
Daylight: UTC-7
Next change: 2026-11-01 −60m

Seoul

Does not observe daylight saving time

Standard: UTC+9

When you can actually talk

The window is 1 hour wide — 17:00–18:00 in Los Angeles, 09:00–10:00 in Seoul.

Los Angeles 17:00–18:00Seoul 09:00–10:00

Reference

The zone identifiers and offsets behind everything above.

	Los Angeles	Seoul
IANA zone	America/Los_Angeles	Asia/Seoul
Abbreviation	PDT	UTC+9
Standard offset	UTC-8	UTC+9
Daylight offset	UTC-7	—
Clock changes this year	2	0
Country	United States	South Korea

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between Los Angeles and Seoul?: Seoul is 16 hours ahead of Los Angeles. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call Seoul from Los Angeles?: Between 17:00–18:00 in Los Angeles, which is 09:00–10:00 in Seoul. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Los Angeles observe daylight saving time?: Yes. Los Angeles runs on UTC-8 in winter and UTC-7 in summer. The next change is on 2026-11-01, when clocks go back by 60 minutes.
Does Seoul observe daylight saving time?: No. Seoul stays on UTC+9 all year, so its clocks never move.
If it is midday in Los Angeles, what time is it in Seoul?: It is 04:00 in Seoul, and already the following day. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do Los Angeles and Seoul use?: Los Angeles uses America/Los_Angeles, currently UTC-7 (PDT), and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.