What is the time difference between Dubai and Kolkata?

Kolkata is 1 hour 30 minutes ahead of Dubai. 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 Kolkata from Dubai?

Between 09:00–16:30 in Dubai, which is 10:30–18:00 in Kolkata. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Dubai observe daylight saving time?

No. Dubai stays on UTC+4 all year, so its clocks never move.

Does Kolkata observe daylight saving time?

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

If it is midday in Dubai, what time is it in Kolkata?

It is 13:30 in Kolkata, 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 Dubai and Kolkata use?

Dubai uses Asia/Dubai, currently UTC+4 (GST), and Kolkata uses Asia/Kolkata, currently UTC+5:30 (IST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Dubai time to Kolkata time

Right now Kolkata runs 1 hour 30 minutes ahead of Dubai. 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 Dubai, across for Kolkata.

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

Daylight saving time

Neither Dubai nor Kolkata changes its clocks, so the difference between them is the same every day of the year.

Dubai

Does not observe daylight saving time

Standard: UTC+4

Kolkata

Does not observe daylight saving time

Standard: UTC+5:30

When you can actually talk

The window is 7 hours 30 minutes wide — 09:00–16:30 in Dubai, 10:30–18:00 in Kolkata.

Dubai 09:00–16:30Kolkata 10:30–18:00

Reference

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

	Dubai	Kolkata
IANA zone	Asia/Dubai	Asia/Kolkata
Abbreviation	GST	IST
Standard offset	UTC+4	UTC+5:30
Daylight offset	—	—
Clock changes this year	0	0
Country	United Arab Emirates	India

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

Common questions

What is the time difference between Dubai and Kolkata?: Kolkata is 1 hour 30 minutes ahead of Dubai. 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 Kolkata from Dubai?: Between 09:00–16:30 in Dubai, which is 10:30–18:00 in Kolkata. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Dubai observe daylight saving time?: No. Dubai stays on UTC+4 all year, so its clocks never move.
Does Kolkata observe daylight saving time?: No. Kolkata stays on UTC+5:30 all year, so its clocks never move.
If it is midday in Dubai, what time is it in Kolkata?: It is 13:30 in Kolkata, 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 Dubai and Kolkata use?: Dubai uses Asia/Dubai, currently UTC+4 (GST), and Kolkata uses Asia/Kolkata, currently UTC+5:30 (IST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.