IST to PST Converter — India to Pacific Time

IST to PST Conversion Table — Standard Time

Offset: IST -13.5 hours = PST. Applies during standard time. Work hours (9 AM–5 PM) highlighted.

IST		PST
00:00		10:30 (−1 day)
01:00		11:30 (−1 day)
02:00		12:30 (−1 day)
03:00		13:30 (−1 day)
04:00		14:30 (−1 day)
05:00		15:30 (−1 day)
06:00		16:30 (−1 day)
07:00		17:30 (−1 day)
08:00		18:30 (−1 day)
09:00		19:30 (−1 day)
10:00		20:30 (−1 day)
11:00		21:30 (−1 day)
12:00		22:30 (−1 day)
13:00		23:30 (−1 day)
14:00		00:30
15:00		01:30
16:00		02:30
17:00		03:30
18:00		04:30
19:00		05:30
20:00		06:30
21:00		07:30
22:00		08:30
23:00		09:30

IST to PDT Conversion Table — Daylight Saving

Offset: IST -12.5 hours = PDT. Applies when US West Coast is observing daylight saving time.

IST		PDT
00:00		11:30 (−1 day)
01:00		12:30 (−1 day)
02:00		13:30 (−1 day)
03:00		14:30 (−1 day)
04:00		15:30 (−1 day)
05:00		16:30 (−1 day)
06:00		17:30 (−1 day)
07:00		18:30 (−1 day)
08:00		19:30 (−1 day)
09:00		20:30 (−1 day)
10:00		21:30 (−1 day)
11:00		22:30 (−1 day)
12:00		23:30 (−1 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

Silicon Valley and Bangalore have one of the widest timezone gaps of any common business pairing. Product teams at headquarters in San Francisco or San Jose collaborate with engineering teams in India across a gap that is more than half a day.

IST is 13 hours and 30 minutes ahead of PST. When it is 9 AM Monday in San Francisco, it is 10:30 PM Monday in India. When India starts work at 9 AM IST, it is 7:30 PM the previous evening in California.

The practical overlap is narrow: roughly 7:30–9:30 AM Pacific aligns with 9–11 PM IST. Many teams adopt an early morning Pacific / late night India pattern, or they rely on asynchronous workflows. When the US moves to PDT in spring, the gap shrinks by one hour to 12.5, giving a slightly wider overlap window.

Daylight Saving Time: What Changes

US West Coast observes daylight saving time, but India does not. This means the offset between IST and PST changes seasonally: 13.5 hours during standard time and 12.5 hours during daylight saving. Double-check the current offset during transition weeks in March and November.

Frequently Asked Questions

How many hours ahead is IST from PST?

IST is 13 hours and 30 minutes ahead of PST. During US Daylight Saving Time (PDT), the difference narrows to 12 hours and 30 minutes.

Does the IST-to-PST gap change during the year?

Yes. India does not observe DST, but the US West Coast does. When California shifts to PDT in spring, the gap drops from 13.5 to 12.5 hours. It returns to 13.5 hours when PDT ends in November.

How do teams in India and California find overlap for meetings?

The most common slot is 7:30–9:30 AM Pacific, which is 9–11 PM IST in winter or 8–10 PM IST in summer. Some teams use 6 PM–8 PM IST with late-afternoon Pacific slots, though those fall outside standard working hours on the California side.

IST to PST Converter — India to Pacific Time

IST to PST Conversion Table — Standard Time

IST to PDT Conversion Table — Daylight Saving

Daylight Saving Time: What Changes

Frequently Asked Questions

Learn More

Your calendar + time zones, at a glance.

IST to PST Converter — India to Pacific Time

IST to PST Conversion Table — Standard Time

IST to PDT Conversion Table — Daylight Saving

Daylight Saving Time: What Changes

Frequently Asked Questions

Related Conversions

Learn More

Your calendar + time zones, at a glance.