What is the time difference between Hong Kong and Mumbai?

Mumbai is 2 hours 30 minutes 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 Mumbai from Hong Kong?

Between 11:30–18:00 in Hong Kong, which is 09:00–15:30 in Mumbai. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Hong Kong observe daylight saving time?

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

Does Mumbai observe daylight saving time?

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

If it is midday in Hong Kong, what time is it in Mumbai?

It is 09:30 in Mumbai, 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 Mumbai use?

Hong Kong uses Asia/Hong_Kong, currently UTC+8, and Mumbai uses Asia/Kolkata, currently UTC+5:30 (IST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Hong Kong time to Mumbai time

Mumbai is 2 hours 30 minutes behind Hong Kong right now, so midday in Hong Kong lands in the morning in Mumbai.

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 Mumbai.

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

Daylight saving time

Neither Hong Kong nor Mumbai changes its clocks, so the difference between them is the same every day of the year.

Hong Kong

Does not observe daylight saving time

Standard: UTC+8

Mumbai

Does not observe daylight saving time

Standard: UTC+5:30

When you can actually talk

The window is 6 hours 30 minutes wide — 11:30–18:00 in Hong Kong, 09:00–15:30 in Mumbai.

Hong Kong 11:30–18:00Mumbai 09:00–15:30

Reference

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

	Hong Kong	Mumbai
IANA zone	Asia/Hong_Kong	Asia/Kolkata
Abbreviation	UTC+8	IST
Standard offset	UTC+8	UTC+5:30
Daylight offset	—	—
Clock changes this year	0	0
Country	Hong Kong SAR China	India

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

Common questions

What is the time difference between Hong Kong and Mumbai?: Mumbai is 2 hours 30 minutes 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 Mumbai from Hong Kong?: Between 11:30–18:00 in Hong Kong, which is 09:00–15:30 in Mumbai. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Hong Kong observe daylight saving time?: No. Hong Kong stays on UTC+8 all year, so its clocks never move.
Does Mumbai observe daylight saving time?: No. Mumbai stays on UTC+5:30 all year, so its clocks never move.
If it is midday in Hong Kong, what time is it in Mumbai?: It is 09:30 in Mumbai, 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 Mumbai use?: Hong Kong uses Asia/Hong_Kong, currently UTC+8, and Mumbai uses Asia/Kolkata, currently UTC+5:30 (IST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.