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PST to IST

The difference month by month, the two long stretches it takes across the year, and what that means for a call between Los Angeles and Mumbai.

How far apart are PST and IST?

IST is 12 hours, 30 minutes ahead of PST for most of the year.

When it is 9:00 AM in Los Angeles, it is 9:30 PM in Mumbai.

Right now

The current reading appears once this page finishes loading.

How does the difference change month by month?

Any answer that quotes one number for this pair is wrong for part of the year. Here is the difference in force in each month of 2026, with the exact day it changes.

Show the month-by-month table
Difference between PST and IST by month, 2026
MonthDifferenceChanges onNew difference
January+13:30No change
February+13:30No change
March+13:30+12:30
April+12:30No change
May+12:30No change
June+12:30No change
July+12:30No change
August+12:30No change
September+12:30No change
October+12:30No change
November+13:30No change
December+13:30No change

Dates here are calendar dates in PST time. Where a clock change happens overnight, the calendar in the other zone can already have turned over.

When does the usual difference not hold?

It holds for one long stretch at a time. Only one of these two zones moves its clocks, so the difference takes two values across the year rather than breaking for a few weeks. These are the exact stretches.

Show every dated difference period
Every period of constant difference, 2026 to 2027
FromUntilDifferenceDays
+13:3066
+12:30238
+13:30133
+12:30238
+13:3055

Every offset on this page comes from IANA tzdata 2026c, released . The pinned table covers 2024–2032. How these times are derived