What is the time difference between Kolkata and Los Angeles?

Los Angeles is 12 hours 30 minutes behind Kolkata. 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 Los Angeles from Kolkata?

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 Kolkata observe daylight saving time?

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

Does Los Angeles observe daylight saving time?

Yes. Los Angeles runs on UTC-8 in winter and UTC-7 in summer. The next change is on 2026-11-01, when clocks go back by 60 minutes.

If it is midday in Kolkata, what time is it in Los Angeles?

It is 23:30 in Los Angeles, still on the previous day. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do Kolkata and Los Angeles use?

Kolkata uses Asia/Kolkata, currently UTC+5:30 (IST), and Los Angeles uses America/Los_Angeles, currently UTC-7 (PDT). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Kolkata time to Los Angeles time

Los Angeles is 12 hours 30 minutes behind Kolkata right now, so midday in Kolkata lands in the late night in Los Angeles.

Convert a time

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Date

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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 Kolkata, across for Los Angeles.

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

Daylight saving time

Los Angeles changes its clocks; Kolkata does not. The difference between them therefore shifts by an hour twice a year.

Kolkata

Does not observe daylight saving time

Standard: UTC+5:30

Los Angeles

Observes daylight saving time

Standard: UTC-8
Daylight: UTC-7
Next change: 2026-11-01 −60m

When you can actually talk

A standard working day in Kolkata and one in Los Angeles do not overlap at all. Any call between them is early for one side or late for the other.

Kolkata 05:30–06:30Los Angeles 17:00–18:00
Kolkata 09:00–18:00Los Angeles 20:30–05:30

Reference

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

	Kolkata	Los Angeles
IANA zone	Asia/Kolkata	America/Los_Angeles
Abbreviation	IST	PDT
Standard offset	UTC+5:30	UTC-8
Daylight offset	—	UTC-7
Clock changes this year	0	2
Country	India	United States

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

Common questions

What is the time difference between Kolkata and Los Angeles?: Los Angeles is 12 hours 30 minutes behind Kolkata. 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 Los Angeles from Kolkata?: 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 Kolkata observe daylight saving time?: No. Kolkata stays on UTC+5:30 all year, so its clocks never move.
Does Los Angeles observe daylight saving time?: Yes. Los Angeles runs on UTC-8 in winter and UTC-7 in summer. The next change is on 2026-11-01, when clocks go back by 60 minutes.
If it is midday in Kolkata, what time is it in Los Angeles?: It is 23:30 in Los Angeles, still on the previous day. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do Kolkata and Los Angeles use?: Kolkata uses Asia/Kolkata, currently UTC+5:30 (IST), and Los Angeles uses America/Los_Angeles, currently UTC-7 (PDT). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.