What is the time difference between Delhi and Istanbul?

Istanbul is 2 hours 30 minutes behind Delhi. 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 Istanbul from Delhi?

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

Does Delhi observe daylight saving time?

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

Does Istanbul observe daylight saving time?

No. Istanbul stays on UTC+3 all year, so its clocks never move.

If it is midday in Delhi, what time is it in Istanbul?

It is 09:30 in Istanbul, 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 Delhi and Istanbul use?

Delhi uses Asia/Kolkata, currently UTC+5:30 (IST), and Istanbul uses Europe/Istanbul, currently UTC+3. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Delhi time to Istanbul time

Istanbul is 2 hours 30 minutes behind Delhi right now, so midday in Delhi lands in the morning in Istanbul.

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 Delhi, across for Istanbul.

Delhi	Istanbul
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 Delhi nor Istanbul changes its clocks, so the difference between them is the same every day of the year.

Delhi

Does not observe daylight saving time

Standard: UTC+5:30

Istanbul

Does not observe daylight saving time

Standard: UTC+3

When you can actually talk

The window is 6 hours 30 minutes wide — 11:30–18:00 in Delhi, 09:00–15:30 in Istanbul.

Delhi 11:30–18:00Istanbul 09:00–15:30

Reference

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

	Delhi	Istanbul
IANA zone	Asia/Kolkata	Europe/Istanbul
Abbreviation	IST	UTC+3
Standard offset	UTC+5:30	UTC+3
Daylight offset	—	—
Clock changes this year	0	0
Country	India	Türkiye

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

Common questions

What is the time difference between Delhi and Istanbul?: Istanbul is 2 hours 30 minutes behind Delhi. 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 Istanbul from Delhi?: Between 11:30–18:00 in Delhi, which is 09:00–15:30 in Istanbul. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Delhi observe daylight saving time?: No. Delhi stays on UTC+5:30 all year, so its clocks never move.
Does Istanbul observe daylight saving time?: No. Istanbul stays on UTC+3 all year, so its clocks never move.
If it is midday in Delhi, what time is it in Istanbul?: It is 09:30 in Istanbul, 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 Delhi and Istanbul use?: Delhi uses Asia/Kolkata, currently UTC+5:30 (IST), and Istanbul uses Europe/Istanbul, currently UTC+3. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.