What is the time difference between PST and IST?

India Standard Time (IST) is 12 hours and 30 minutes ahead of Pacific Standard Time (PST). PST uses a UTC offset of UTC-7, while IST uses UTC+5:30. For example, when it's 9:00 AM in PST, it's 9:30 PM in IST. Note that this difference may shift by one hour during daylight saving time transitions if PST observes DST. Use the conversion table above to see the exact time for each hour of the day.

How do I convert PST to IST?

To convert PST to IST, add 12 hours and 30 minutes to the PST time. For example, 9:00 AM PST is 9:30 PM IST, and 5:00 PM PST is 5:30 AM IST. Keep in mind that during daylight saving time transitions, the offset between these timezones may temporarily change by one hour. You can also use the interactive converter above for quick, accurate results.

What time is it in IST when it's noon in PST?

When it's 12:00 PM (noon) in PST, it's 12:30 AM in IST. This is because IST is 12 hours and 30 minutes ahead of PST. Similarly, when it's 6:00 PM in PST, it's 6:30 AM in IST. During daylight saving time transitions, these times may shift by one hour, so always verify the current offset. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours ahead is IST from PST?

IST is 12 hours and 30 minutes ahead of PST. This means when it's 9:00 AM in PST, it's 9:30 PM in IST, and when it's midnight in PST, it's 12:30 PM in IST. The exact difference can vary by one hour during daylight saving time transitions. The conversion table above provides a complete hour-by-hour mapping.

Is IST ahead or behind PST?

IST is ahead of PST by 12 hours and 30 minutes. Clocks in IST show a later time than PST, meaning the day starts earlier in IST relative to PST. For example, when it's morning in PST, it's already afternoon or evening in IST. This gap may change by one hour during DST transitions.

Does PST observe daylight saving time?

Yes, Pacific Standard Time observes daylight saving time. During DST, the abbreviation changes to PDT and clocks move forward by one hour, typically in spring. Clocks then fall back in autumn, returning to standard PST time. This means the UTC offset for PST shifts between two values depending on the season. Check our DST change calendar for exact transition dates that may affect your PST to IST conversions.

Does IST observe daylight saving time?

No, India Standard Time does not observe daylight saving time. The UTC offset of UTC+5:30 remains the same year-round, making time conversions to IST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

What is the best time to call from PST to IST?

The best time for a call between PST and IST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in IST during their work day, call between 8:30 PM and 4:30 AM your PST time. Avoid calling too early or late, as the 12 hours and 30 minutes difference means your evening could be their late night. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

When does daylight saving time change in PST?

Daylight saving time transitions vary by year and region. Pacific Standard Time observes DST, which typically shifts clocks forward by one hour in spring ("spring forward") and back in fall ("fall back"). During these transition periods, the time difference between PST and IST may temporarily change by one hour, which can cause confusion for scheduled meetings or calls. It's important to double-check your conversions around transition dates, especially if the two timezones switch on different dates. Check our DST change calendar for exact transition dates in the current year.

Do PST and IST ever have the same time?

No, PST and IST never show the same time because their base UTC offsets are different. However, because PST observes daylight saving time and IST does not, the time difference between them changes by one hour during DST transitions. This means the gap narrows or widens depending on the season, but the two clocks never align. Always verify the current offset around DST transition dates to avoid scheduling errors.

PST to IST Converter

Convert Pacific Standard Time to India Standard Time. See the hour-by-hour conversion table below.

Upcoming DST Change

Pacific Time (PDT) will fall back on November 1. Clocks will shift by 1 hour (PDT → PST).

View all DST changes

Timezone Details

Pacific Standard Time

10:23 PM

Saturday, October 24, 2026

PDT (UTC-07:00)

India Standard Time

10:53 AM

Sunday, October 25, 2026

IST (UTC+05:30)

Difference: +12h 30m

PDT DST: Yes (PDT)

IST DST: No

24-Hour Overview

PDT — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

IST — 24-hour overview

12p12p

3p3p

6p6p

9p9p

10p

11p

12a12a

3a3a

6a6a

9a9a

10a

11a

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

IST to PST EST to PST PST to EST EST to IST IST to EST PST to GMT GMT to PST PST to JST JST to PST

Cities in These Timezones

PST Cities

Los Angeles San Diego San Francisco Seattle Las Vegas

IST Cities

Delhi Mumbai Kolkata Bangalore Chennai

More Tools

Compare PST & IST Plan a Meeting (PST & IST)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Pacific Standard Time on Wikipedia India Standard Time on Wikipedia IANA Time Zone Database