Convert PST to IST
To convert PST to IST: 9:00 AM PST is 10:30 PM IST. PST is UTC-08:00 and IST is UTC+05:30, so IST is 13 hours 30 minutes ahead of PST, but not all year, as explained below.
In India Standard Time
- On a 24-hour clock
- 09:00 PST is 22:30 IST
- The offsets
- PST is UTC-08:00, IST is UTC+05:30
- Difference
- IST is 13 hours 30 minutes ahead of PST
- Date
- Same calendar day.
- This gap does NOT hold all year Convert through the offset in force on the date you care about.
- The two ends switch on different dates, or one does not switch at all.
- PST is only in force part of the year United States: daylight time starts the second Sunday in March, at 02:00 local time and ends the first Sunday in November, at 02:00 local time (Energy Policy Act of 2005, in force since 2007). In 2026 that is 2026-03-08 to 2026-11-01. Los Angeles is on PDT between those dates.
- otherwise PDT, UTC-07:00
- Military time zone letters Z (Zulu) is UTC. A to M run east of Greenwich an hour apart, N to Y west, and J is left out. A letter names an offset, so a zone that switches to daylight time changes letter: EST is R, EDT is Q.
- PST is U (Uniform), IST is E* (Echo, starred: off the whole hour)
- In every zone
- HST 07:00 AKST 08:00 PST 09:00 AKDT 09:00 MST 10:00 PDT 10:00 CST 11:00 MDT 11:00 EST 12:00 CDT 12:00 EDT 13:00 UTC 17:00 GMT 17:00 BST 18:00 CET 18:00 CEST 19:00 EET 19:00 EEST 20:00 MSK 20:00 IST 22:30 SGT 01:00 HKT 01:00 JST 02:00 AEST 03:00 AEDT 04:00 NZST 05:00 NZDT 06:00
How the Time Zone Converter works
Pacific Standard Time (PST) is UTC-08:00 and India Standard Time (IST) is UTC+05:30, so converting PST to IST means adding 13 hours 30 minutes to the PST time. IST is 13 hours 30 minutes ahead of PST.
Worked through: 9:00 AM PST is 10:30 PM IST.
The gap between these two is not the same all year, which is the thing to get right. IST never shifts and PST does, so the difference moves. Convert through the offset in force on the date you care about rather than through the abbreviation somebody typed; the offsets above are definitions and the abbreviation is a claim about the calendar.
Twelve and a half or thirteen and a half hours forward, which is close enough to half a day that the quick trick works: add half a day, add or subtract the half hour, and flip AM to PM. 09:00 in San Francisco is 22:30 in Bengaluru. The two are nearly antipodal, which is why California-India teams almost never hold live meetings outside one uncomfortable slot at either end. The gap is 13:30 in winter and 12:30 in summer because only the American end moves.
One thing worth stating plainly, because it is the most common mistake in this whole subject: an abbreviation is not a place. PST is Pacific Standard Time, which Los Angeles uses only part of the year; the rest of the time it is on PDT at UTC-07:00. IST does not shift. If what you have is a city and a date rather than a pair of abbreviations, that is a different question and needs the tz database, not arithmetic. This is also why the shifting designations exist: PT means Pacific time whichever of the two is in force. Searching for PT and searching for PST to IST are the same question in two vocabularies, which is why this converter answers both.
Common times for this pair:
- 8:00 AM PST is 9:30 PM IST - 9:00 AM PST is 10:30 PM IST - 5:00 PM PST is 6:30 AM IST the next day - 9:00 PM PST is 10:30 AM IST the next day
Time Zone Converter FAQ
What is the time difference between PST and IST?
IST is 13 hours 30 minutes ahead of PST. PST is UTC-08:00 and IST is UTC+05:30, and both offsets are definitions rather than measurements, so the subtraction is exact.
What time is 9:00 AM PST in IST?
9:00 AM PST is 10:30 PM IST. Add 13 hours 30 minutes and carry the date if it crosses midnight.
Does the difference between PST and IST change with daylight saving?
Yes, and this is the main thing to watch on this pair. IST is fixed and PST shifts by an hour for part of the year, so the difference takes more than one value across the year. In 2026 the United States switch runs from 2026-03-08 to 2026-11-01.
Is there anything specific to this pair worth knowing?
Twelve and a half or thirteen and a half hours forward, which is close enough to half a day that the quick trick works: add half a day, add or subtract the half hour, and flip AM to PM. 09:00 in San Francisco is 22:30 in Bengaluru. The two are nearly antipodal, which is why California-India teams almost never hold live meetings outside one uncomfortable slot at either end. The gap is 13:30 in winter and 12:30 in summer because only the American end moves.
Someone wrote PST but it is summer. What do they mean?
Almost certainly the zone rather than the abbreviation: Los Angeles time, which in summer is PDT at UTC-07:00 rather than PST at UTC-08:00. People type the standard-time abbreviation all year round. If an invitation is an hour out from what you calculated, this is why.