Time Conversion Calculator
IST to PST Converter
Convert India Standard Time to Pacific Time with date-aware logic, a 24-hour table, meeting planner, and copy-ready result.
Convert IST to PST
Choose a date and time in India Standard Time. The calculator will show the matching Pacific Time time.
Suggested meeting times
24-hour IST to PST conversion table
Full-day conversion for the selected date.
| India Standard Time | Pacific Time | Meeting note |
|---|---|---|
| Select a time and convert to generate the table. | ||
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IST to PST: quick answer
To convert Indian Standard Time (IST) to fixed Pacific Standard Time (PST), subtract 13 hours and 30 minutes. For example, 10:30 PM IST is 9:00 AM PST. For a real Pacific location such as Los Angeles, subtract 13 hours 30 minutes during PST or 12 hours 30 minutes during Pacific Daylight Time (PDT).
This calculator uses America/Los_Angeles for the selected date, so its result is labelled PST or PDT as appropriate. The page title reflects the common “IST to PST” search wording, but the tool returns real-world Pacific Time.
How to convert IST to PST or Pacific Time
- Fixed PST: PST = IST − 13 hours 30 minutes.
- PDT: PDT = IST − 12 hours 30 minutes.
- Real Pacific Time: select the date so the converter can apply PST or PDT correctly.
Example: 9:00 PM IST is 7:30 AM fixed PST. On a date when Los Angeles observes PDT, 9:00 PM IST is 8:30 AM PDT.
PST, PDT and PT are not interchangeable
| Target label | UTC offset | Subtract from IST |
|---|---|---|
| PST | UTC−08:00 | 13 hours 30 minutes |
| PDT | UTC−07:00 | 12 hours 30 minutes |
| PT | PST or PDT by date | Use date-aware conversion |
PST is the fixed standard-time abbreviation. PT is the general regional label for locations that may switch between PST and PDT. A dated calendar event should use the city/region and correct abbreviation.
Common IST to Pacific conversions
| IST | Fixed PST | PDT |
|---|---|---|
| 6:00 AM | 4:30 PM previous day | 5:30 PM previous day |
| 9:00 AM | 7:30 PM previous day | 8:30 PM previous day |
| 12:00 PM | 10:30 PM previous day | 11:30 PM previous day |
| 3:00 PM | 1:30 AM same day | 2:30 AM same day |
| 6:00 PM | 4:30 AM same day | 5:30 AM same day |
| 9:00 PM | 7:30 AM same day | 8:30 AM same day |
Calendar-date changes
For fixed PST, IST times before 1:30 PM fall on the previous Pacific calendar date. During PDT, IST times before 12:30 PM fall on the previous Pacific date. This matters for West Coast support handoffs, deployments and meeting invitations.
Best India to Pacific Time meeting window
A practical India-side window is 7:30 PM–10:30 PM IST. It corresponds to 6:00 AM–9:00 AM PST or 7:00 AM–10:00 AM PDT. Because the overlap is narrow, recurring teams may rotate inconvenient hours.
Formula, methodology and verification
IST is interpreted with Asia/Kolkata at UTC+05:30. The target uses America/Los_Angeles, which returns PST or PDT for the selected date. Tests cover both seasonal offsets, US transition dates, previous-date rollover, month/year boundaries and reciprocal IST → PT → IST checks.
Frequently asked questions
What is the fixed IST to PST difference?
Fixed PST is exactly 13 hours and 30 minutes behind IST.
What is 10:30 PM IST in PST?
10:30 PM IST is 9:00 AM fixed PST. If Los Angeles is observing PDT, it is 10:00 AM PDT.
Why does the converter sometimes return PDT?
The tool converts to real Pacific Time using the selected date. Locations such as Los Angeles use PDT at UTC−07:00 during their daylight-saving period.
What is 6:00 AM IST in Los Angeles?
It is 4:30 PM PST on the previous date during standard time or 5:30 PM PDT on the previous date during daylight time.
Does India change clocks seasonally?
No. Modern Indian Standard Time remains at UTC+05:30 throughout the year.
Related converter and official references
Starting with Pacific time? Use the PST to IST Converter. Compare the East Coast with the IST to EST Converter.
References: IANA Time Zone Database, NIST local time FAQs, and CSIR–National Physical Laboratory India.