PST to IST Converter

About PST and IST

PST (Pacific Standard Time) is UTC-8, used by major US West Coast cities including Los Angeles, San Francisco, Seattle, San Diego, Portland, Sacramento, Las Vegas, and San Jose. From March to November, PST switches to PDT (Pacific Daylight Time, UTC-7), reducing the IST difference by 1 hour.

IST (India Standard Time) is UTC+5:30, used across all of India and Sri Lanka. India does not observe daylight saving time, so IST stays the same year-round.

The total offset between PST and IST is +13 hours 30 minutes — meaning India is 13.5 hours ahead of Pacific Standard Time. This is one of the largest practical time gaps between two major business regions.

Best Time to Call India from California (or any Pacific Time city)

The PST-IST gap is challenging because California is 13.5 hours behind India. The best call window is 5:00 to 7:00 AM PST, which lands at 6:30 to 8:30 PM IST. Early morning in California, evening in India — this is the only window where both sides can be reasonably alert and working.

Some West Coast teams use an alternate approach: 6:00 to 8:00 PM PST = 7:30 to 9:30 AM IST next day. Evening in California, morning in India. Rotate between these two windows quarterly to share the burden fairly.

PST vs PDT — Daylight Saving Time Impact

The US observes Daylight Saving Time, but India does not. This means the PST-IST gap changes twice a year:

• November to March (PST winter): India is 13 hours 30 minutes ahead
• March to November (PDT summer): India is 12 hours 30 minutes ahead

Set a calendar reminder for the 2nd Sunday in March and 1st Sunday in November to review any recurring meetings with India.

Frequently Asked Questions