IST to PST Converter

India Standard Time → Pacific Standard Time · IST is 13.5 hours ahead of PST

IST
—
PST
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IST and PST are the same time

IST to PST Conversion Table

ISTPST
12:00 AM12:00 AM
1:00 AM1:00 AM
2:00 AM2:00 AM
3:00 AM3:00 AM
4:00 AM4:00 AM
5:00 AM5:00 AM
6:00 AM6:00 AM
7:00 AM7:00 AM
8:00 AM8:00 AM
9:00 AM9:00 AM
10:00 AM10:00 AM
11:00 AM11:00 AM
12:00 PM12:00 PM
1:00 PM1:00 PM
2:00 PM2:00 PM
3:00 PM3:00 PM
4:00 PM4:00 PM
5:00 PM5:00 PM
6:00 PM6:00 PM
7:00 PM7:00 PM
8:00 PM8:00 PM
9:00 PM9:00 PM
10:00 PM10:00 PM
11:00 PM11:00 PM

Green rows = business hours overlap (9:00 AM – 6:00 PM IST)

Major IST Cities
  • Mumbai
  • Delhi
  • Bangalore
  • Hyderabad
  • Chennai
  • Kolkata
Major PST Cities
  • Los Angeles, CA
  • San Francisco, CA
  • Seattle, WA
  • San Diego, CA
  • Portland, OR
  • Las Vegas, NV
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IST vs PST — What You Need to Know

India Standard Time (IST) is UTC+5:30. India does not observe DST, so IST is fixed year-round.

Pacific Standard Time (PST) is UTC-8. California, Oregon, Washington, and Nevada observe PDT (UTC-7) from March to November.

The 13.5-hour gap makes India–West Coast scheduling especially challenging. The best window is the end of India day / early West Coast morning: 8:00–10:30 PM IST = 6:30–9:00 AM PST. During US Daylight Time (PDT), the window shifts: 8 PM IST = 7:30 AM PDT.

India's IT industry (Bangalore, Hyderabad, Pune) commonly serves US West Coast clients, making this time conversion one of the most important for the global tech industry.

Note on DST shift:

The gap changes when the US observes PDT (March–November): 13.5h → 12.5h. India stays at UTC+5:30 year-round.

Frequently Asked Questions

How many hours ahead is IST compared to PST?

IST (UTC+5:30) is 13 hours 30 minutes ahead of PST (UTC-8) during US standard time, and 12 hours 30 minutes ahead during PDT (UTC-7). India does not observe DST.

When it is 9:00 AM IST, what time is it in Los Angeles?

When it is 9:00 AM IST, it is 7:30 PM PST the previous day (standard time) or 8:30 PM PDT. Los Angeles business hours barely overlap with India morning hours.

What is the best time for a call between India and Los Angeles?

The best window is 8:00–10:30 PM IST, which corresponds to 6:30–9:00 AM PST. During PDT, 8 PM IST = 7:30 AM PDT. This requires Indian participants to stay into the evening.

Is IST 13 or 14 hours ahead of PST?

IST is 13 hours and 30 minutes (13.5h) ahead of PST (UTC-8), and 12 hours and 30 minutes (12.5h) ahead of PDT (UTC-7) during US daylight saving time.