What is the time difference between São Paulo and Seoul?

Seoul is 12 hours ahead of São Paulo. 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 São Paulo?

There is no time inside normal working hours in both cities, so someone has to take the call outside them. The nearest workable windows are listed above — pick one and alternate who gets the awkward slot.

Does São Paulo observe daylight saving time?

No. São Paulo stays on UTC-3 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 São Paulo, what time is it in Seoul?

It is 00:00 in Seoul, and already the following day. That holds for the current offsets; it does not change through the year, because neither city moves its clocks.

Which time zones do São Paulo and Seoul use?

São Paulo uses America/Sao_Paulo, currently UTC-3, and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert São Paulo time to Seoul time

Right now Seoul runs 12 hours ahead of São Paulo. That gap is not fixed: it moves when either city changes its clocks.

Convert a time

From

Date

Time

Converted time

—

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 São Paulo, across for Seoul.

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

Daylight saving time

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

São Paulo

Does not observe daylight saving time

Standard: UTC-3

Seoul

Does not observe daylight saving time

Standard: UTC+9

When you can actually talk

There is no hour where both cities are inside a 09:00–18:00 working day. Someone has to move — the nearest workable windows are below.

São Paulo 21:00–06:00Seoul 09:00–18:00
São Paulo 09:00–18:00Seoul 21:00–06:00

Reference

The zone identifiers and offsets behind everything above.

	São Paulo	Seoul
IANA zone	America/Sao_Paulo	Asia/Seoul
Abbreviation	UTC-3	UTC+9
Standard offset	UTC-3	UTC+9
Daylight offset	—	—
Clock changes this year	0	0
Country	Brazil	South Korea

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

Common questions

What is the time difference between São Paulo and Seoul?: Seoul is 12 hours ahead of São Paulo. 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 São Paulo?: There is no time inside normal working hours in both cities, so someone has to take the call outside them. The nearest workable windows are listed above — pick one and alternate who gets the awkward slot.
Does São Paulo observe daylight saving time?: No. São Paulo stays on UTC-3 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 São Paulo, what time is it in Seoul?: It is 00:00 in Seoul, and already the following day. That holds for the current offsets; it does not change through the year, because neither city moves its clocks.
Which time zones do São Paulo and Seoul use?: São Paulo uses America/Sao_Paulo, currently UTC-3, and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.