Los Angeles to Seoul
These two are not a fixed distance apart. The gap is +16h, +17h at different points in the year, and it changes 3 times.
Reading your clock…
Every gap between Los Angeles and Seoul, with dates
This is the table other converters do not show. Each row is a stretch of the year during which the difference is a particular number. Dates are Los Angeles's local dates.
| From | Until | Seoul is | Length |
|---|---|---|---|
| Sunday, 1 November 2026 | Saturday, 13 March 2027 | 17 hours ahead | 133 days |
| Sunday, 14 March 2027 | Saturday, 6 November 2027 | 16 hours ahead | 238 days |
| Sunday, 7 November 2027 | Saturday, 11 March 2028 | 17 hours ahead | 126 days |
| Sunday, 12 March 2028 | onwards | 16 hours ahead | — |
The highlighted row is the one to watch. For 126 days from Sunday, 7 November 2027, the difference is 17 hours ahead rather than the usual figure. A weekly call booked outside that window arrives an hour off inside it.
Los Angeles hours converted to Seoul
As at Tuesday, 3 November 2026. Use the converter above for any other day — and if the table of gaps says the difference changes, these numbers change with it.
| Los Angeles | Seoul |
|---|---|
| 07:00 | 00:00next day |
| 08:00 | 01:00next day |
| 09:00 | 02:00next day |
| 10:00 | 03:00next day |
| 11:00 | 04:00next day |
| 12:00 | 05:00next day |
| 13:00 | 06:00next day |
| 14:00 | 07:00next day |
| 15:00 | 08:00next day |
| 16:00 | 09:00next day |
| 17:00 | 10:00next day |
| 18:00 | 11:00next day |
| 19:00 | 12:00next day |
| 20:00 | 13:00next day |
Los Angeles
America/Los Angeles
Changes clocks twice a year, between UTC-08:00 and UTC-07:00. Next change Sunday, 14 March 2027.
When Los Angeles and Seoul can actually talk
On a standard 09:00–17:00 day in both cities, the working hours overlap for 1 hour. That window is 16:00–17:00 in Los Angeles, which is 09:00–10:00 in Seoul on the following day.
That is tight. A recurring call here has very little slack, so a daylight saving shift at either end can wipe the window out entirely.
Calculated for Tuesday, 3 November 2026. Because the gap changes during the year, this window moves with it — the planner recomputes it for any date you pick.
Questions
Los Angeles and Seoul, explained
What is the time difference between Los Angeles and Seoul?
There is no single answer, which is why most converters get this wrong for part of the year. Seoul is 16 hours ahead, 17 hours ahead relative to Los Angeles at different points in the year. Right now it is 17 hours ahead. The table on this page gives the exact dates for each.
Why does the difference between Los Angeles and Seoul change?
Los Angeles moves between UTC-08:00 and UTC-07:00, while Seoul stays on UTC+09:00 all year. A gap only stays fixed when both ends are fixed. Here one end moves, so the difference moves with it even though nothing changed at the other end.
When is the difference between Los Angeles and Seoul unusual?
The shortest window runs from Sunday, 7 November 2027 to Saturday, 11 March 2028 — 126 days during which Seoul is 17 hours ahead relative to Los Angeles rather than the usual amount. Short windows like this are where recurring meetings break, because nobody thinks to check.
Does this account for daylight saving automatically?
Yes. Offsets come from your device's own copy of the IANA time zone database through the browser's Intl API, so they reflect whatever rules are current rather than a table bundled here that could go stale. Pick any date in the converter and it resolves that date's rules, not today's.