IST to California time conversion

IST time

ISTUTC+5:30Not observed

Time in California

PDTUTC-7Daylight saving time

California is 12 hours 30 minutes behind IST. After the next clock change (): California is 13 hours 30 minutes behind IST.

Time difference with your location

IST is 5 hours 30 minutes ahead of UTC. Compare with your local time →

Choose a date and time

Choose the local time in IST to convert it to California on that date.

California to IST time conversion

Skipped clock-change times are unavailable; a repeated time uses its first occurrence.

24-hour conversion chart · IST → California

This table converts each hour in IST to California on 2026-10-21.

  • Working hours
  • Outside working hours
  • Night hours
ISTCaliforniaShared working hours
00:0012:00 AM 11:3011:30 AM -1 day
01:001:00 AM 12:3012:30 PM -1 day
02:002:00 AM 13:301:30 PM -1 day
03:003:00 AM 14:302:30 PM -1 day
04:004:00 AM 15:303:30 PM -1 day
05:005:00 AM 16:304:30 PM -1 day
06:006:00 AM 17:305:30 PM -1 day
07:007:00 AM 18:306:30 PM -1 day
08:008:00 AM 19:307:30 PM -1 day
09:009:00 AM 20:308:30 PM -1 day
10:0010:00 AM 21:309:30 PM -1 day
11:0011:00 AM 22:3010:30 PM -1 day
12:0012:00 PM 23:3011:30 PM -1 day
13:001:00 PM 00:3012:30 AM
14:002:00 PM 01:301:30 AM
15:003:00 PM 02:302:30 AM
16:004:00 PM 03:303:30 AM
17:005:00 PM 04:304:30 AM
18:006:00 PM 05:305:30 AM
19:007:00 PM 06:306:30 AM
20:008:00 PM 07:307:30 AM
21:009:00 PM 08:308:30 AM
22:0010:00 PM 09:309:30 AM
23:0011:00 PM 10:3010:30 AM

Quick conversion examples

These examples use IST (UTC+5:30) and California (UTC-7); choosing a date applies the local clock changes.

Conversion formula: California = IST − 12h30 · IST − 13h30.

ISTCalifornia
6:00 AM IST= 5:30 PM California (-1 day)
7:00 AM IST= 6:30 PM California (-1 day)
8:00 AM IST= 7:30 PM California (-1 day)
9:00 AM IST= 8:30 PM California (-1 day)
10:00 AM IST= 9:30 PM California (-1 day)
12:00 PM IST= 11:30 PM California (-1 day)
3:00 PM IST= 2:30 AM California
5:00 PM IST= 4:30 AM California
6:00 PM IST= 5:30 AM California
8:00 PM IST= 7:30 AM California

Overlapping meeting hours

The 08:00–18:00 working days in IST and California do not overlap on 2026-10-21.

Clock changes on both sides, 2026–2028

IST and California have the following local clock changes in 2026–2028; all times in the table are local to that side.

YearISTCalifornia
2026 No clock changes; UTC+5:30 all year.

· 02:00 → 03:00
UTC-8 → UTC-7

· 02:00 → 01:00
UTC-7 → UTC-8

2027 No clock changes; UTC+5:30 all year.

· 02:00 → 03:00
UTC-8 → UTC-7

· 02:00 → 01:00
UTC-7 → UTC-8

2028 No clock changes; UTC+5:30 all year.

· 02:00 → 03:00
UTC-8 → UTC-7

· 02:00 → 01:00
UTC-7 → UTC-8

At the start of 2026, California is 13 hours 30 minutes behind IST. The difference changes during the following periods.

  • From 2026-03-08 15:30 IST until 2026-11-01 14:30 IST, California is 12 hours 30 minutes behind IST.
  • From 2027-03-14 15:30 IST until 2027-11-07 14:30 IST, California is 12 hours 30 minutes behind IST.
  • From 2028-03-12 15:30 IST until 2028-11-05 14:30 IST, California is 12 hours 30 minutes behind IST.

Frequently asked questions

What time is 9 AM IST in California?

9:00 AM IST = 8:30 PM California (-1 day), using UTC+5:30 and UTC-7. Choose a date above for the seasonal local time.

Does the time difference between IST and California change during the year?

Yes. During 2026–2028: California is 13 hours 30 minutes behind IST; California is 12 hours 30 minutes behind IST. The clock-change table gives the dates for both sides.

How do I tell whether it is day or night in California?

Read the California clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.

What is the best time to call between IST and California?

The 08:00–18:00 working days in IST and California do not overlap.

What is the time difference between IST and California now?

Right now, California is 12 hours 30 minutes behind IST. Conversion formula: California = IST − 12h30 · IST − 13h30.