What is the time difference between Mumbai and Seoul?

Seoul is 3 hours 30 minutes ahead of Mumbai. 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 Mumbai?

Between 09:00–14:30 in Mumbai, which is 12:30–18:00 in Seoul. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Mumbai observe daylight saving time?

No. Mumbai stays on UTC+5:30 all year, so its clocks never move.

Does Seoul observe daylight saving time?

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

If it is midday in Mumbai, what time is it in Seoul?

It is 15:30 in Seoul, on the same calendar date. That holds for the current offsets; it does not change through the year, because neither city moves its clocks.

Which time zones do Mumbai and Seoul use?

Mumbai uses Asia/Kolkata, currently UTC+5:30 (IST), and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Mumbai time to Seoul time

Right now Seoul runs 3 hours 30 minutes ahead of Mumbai. That gap is not fixed: it moves when either city changes its clocks.

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 Mumbai, across for Seoul.

Mumbai	Seoul
00:00	03:30
01:00	04:30
02:00	05:30
03:00	06:30
04:00	07:30
05:00	08:30
06:00	09:30
07:00	10:30
08:00	11:30
09:00	12:30
10:00	13:30
11:00	14:30
12:00	15:30
13:00	16:30
14:00	17:30
15:00	18:30
16:00	19:30
17:00	20:30
18:00	21:30
19:00	22:30
20:00	23:30
21:00	00:30next day
22:00	01:30next day
23:00	02:30next day

Daylight saving time

Both cities keep one offset all year. Whatever difference holds today still holds in six months.

Mumbai

Does not observe daylight saving time

Standard: UTC+5:30

Seoul

Does not observe daylight saving time

Standard: UTC+9

When you can actually talk

You have 5 hours 30 minutes of shared working time: 09:00–14:30 in Mumbai, which is 12:30–18:00 in Seoul.

Mumbai 09:00–14:30Seoul 12:30–18:00

Reference

The zone identifiers and offsets behind everything above.

	Mumbai	Seoul
IANA zone	Asia/Kolkata	Asia/Seoul
Abbreviation	IST	UTC+9
Standard offset	UTC+5:30	UTC+9
Daylight offset	—	—
Clock changes this year	0	0
Country	India	South Korea

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

Common questions

What is the time difference between Mumbai and Seoul?: Seoul is 3 hours 30 minutes ahead of Mumbai. 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 Mumbai?: Between 09:00–14:30 in Mumbai, which is 12:30–18:00 in Seoul. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Mumbai observe daylight saving time?: No. Mumbai stays on UTC+5:30 all year, so its clocks never move.
Does Seoul observe daylight saving time?: No. Seoul stays on UTC+9 all year, so its clocks never move.
If it is midday in Mumbai, what time is it in Seoul?: It is 15:30 in Seoul, on the same calendar date. That holds for the current offsets; it does not change through the year, because neither city moves its clocks.
Which time zones do Mumbai and Seoul use?: Mumbai uses Asia/Kolkata, currently UTC+5:30 (IST), and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.