What is the time difference between Hong Kong and São Paulo?

São Paulo is 11 hours behind Hong Kong. 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 São Paulo from Hong Kong?

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 Hong Kong observe daylight saving time?

No. Hong Kong stays on UTC+8 all year, so its clocks never move.

Does São Paulo observe daylight saving time?

No. São Paulo stays on UTC-3 all year, so its clocks never move.

If it is midday in Hong Kong, what time is it in São Paulo?

It is 01:00 in São Paulo, 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 Hong Kong and São Paulo use?

Hong Kong uses Asia/Hong_Kong, currently UTC+8, and São Paulo uses America/Sao_Paulo, currently UTC-3. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Hong Kong time to São Paulo time

São Paulo is 11 hours behind Hong Kong right now, so midday in Hong Kong lands in the small hours in São Paulo.

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 Hong Kong, across for São Paulo.

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

Daylight saving time

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

Hong Kong

Does not observe daylight saving time

Standard: UTC+8

São Paulo

Does not observe daylight saving time

Standard: UTC-3

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.

Hong Kong 09:00–18:00São Paulo 22:00–07:00
Hong Kong 20:00–05:00São Paulo 09:00–18:00

Reference

The underlying data, in case you need to put it in a calendar invitation or a configuration file.

	Hong Kong	São Paulo
IANA zone	Asia/Hong_Kong	America/Sao_Paulo
Abbreviation	UTC+8	UTC-3
Standard offset	UTC+8	UTC-3
Daylight offset	—	—
Clock changes this year	0	0
Country	Hong Kong SAR China	Brazil

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

Common questions

What is the time difference between Hong Kong and São Paulo?: São Paulo is 11 hours behind Hong Kong. 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 São Paulo from Hong Kong?: 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 Hong Kong observe daylight saving time?: No. Hong Kong stays on UTC+8 all year, so its clocks never move.
Does São Paulo observe daylight saving time?: No. São Paulo stays on UTC-3 all year, so its clocks never move.
If it is midday in Hong Kong, what time is it in São Paulo?: It is 01:00 in São Paulo, 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 Hong Kong and São Paulo use?: Hong Kong uses Asia/Hong_Kong, currently UTC+8, and São Paulo uses America/Sao_Paulo, currently UTC-3. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.