PST ↔ IST Time Converter
Convert PST to IST instantly. Pacific Standard Time is UTC-8 / UTC-7 (PDT) and India Standard Time is UTC+5:30 — a 13h 30m difference. Enter any time in either field — both fully editable. Click ⇄ to swap directions.
🕐 Live Current Times
⚡ Bidirectional Time Converter
PST (UTC-8 / UTC-7 (PDT)) → IST (UTC+5:30) · Difference: 13h 30m ahead (auto-adjusts for DST)
ℹ️ Timezone Details
🤝 Best Meeting Hours Between PST and IST
Because IST is 13h 30m ahead of PST, morning slots in the earlier zone generally line up with afternoon or evening in the later zone. Use this table to find windows where both sides fall within reasonable working hours.
| PST | IST | Suitability |
|---|---|---|
| 7:00 AM | 8:30 PM | Good — early start |
| 8:00 AM | 9:30 PM | Best overlap |
| 9:00 AM | 10:30 PM | Best overlap |
| 10:00 AM | 11:30 PM | Best overlap |
| 11:00 AM | 12:30 AM | Good — late window |
🏙️ Cities Covered by Each Time Zone
📌 Zone Notes — PST & IST
PST: Pacific Standard Time (PST) is UTC-8 during winter and shifts to PDT (Pacific Daylight Time, UTC-7) during summer, following the US Daylight Saving Time schedule. The transition happens on the second Sunday of March (spring forward) and the first Sunday of November (fall back). PST covers the US West Coast, including Los Angeles, San Francisco, Seattle, and Portland, as well as Vancouver in Canada.
IST: India Standard Time (IST) uses a half-hour offset at UTC+5:30. India chose this single nationwide timezone to balance solar time across the country's wide east-west span. No part of India observes Daylight Saving Time, so IST is constant at UTC+5:30 year-round. Every conversion involving IST will land on a :30-minute mark in the destination timezone (unless the other zone also uses a :30 or :00 offset).
🌤️ Daylight Saving Time (DST) — What to Know
PST (Pacific Standard Time) observes Daylight Saving Time, shifting clocks by one hour during summer. IST (India Standard Time) stays fixed at UTC+5:30 all year with no DST. The gap between these zones therefore changes by one hour seasonally. The live converter detects the current offset automatically.
📋 Full 24-Hour Conversion Table — PST to IST
| PST (12h) | PST (24h) | IST (12h) | IST (24h) | Day | Type |
|---|---|---|---|---|---|
| 12:00 AM | 00:00 | 1:30 PM | 13:30 | — | Night |
| 1:00 AM | 01:00 | 2:30 PM | 14:30 | — | Night |
| 2:00 AM | 02:00 | 3:30 PM | 15:30 | — | Night |
| 3:00 AM | 03:00 | 4:30 PM | 16:30 | — | Night |
| 4:00 AM | 04:00 | 5:30 PM | 17:30 | — | Night |
| 5:00 AM | 05:00 | 6:30 PM | 18:30 | — | Night |
| 6:00 AM | 06:00 | 7:30 PM | 19:30 | — | |
| 7:00 AM | 07:00 | 8:30 PM | 20:30 | — | |
| 8:00 AM | 08:00 | 9:30 PM | 21:30 | — | |
| 9:00 AM | 09:00 | 10:30 PM | 22:30 | — | Business |
| 10:00 AM | 10:00 | 11:30 PM | 23:30 | — | Business |
| 11:00 AM | 11:00 | 12:30 AM | 00:30 | +1 Day | Business |
| 12:00 PM | 12:00 | 1:30 AM | 01:30 | +1 Day | Business |
| 1:00 PM | 13:00 | 2:30 AM | 02:30 | +1 Day | Business |
| 2:00 PM | 14:00 | 3:30 AM | 03:30 | +1 Day | Business |
| 3:00 PM | 15:00 | 4:30 AM | 04:30 | +1 Day | Business |
| 4:00 PM | 16:00 | 5:30 AM | 05:30 | +1 Day | Business |
| 5:00 PM | 17:00 | 6:30 AM | 06:30 | +1 Day | Business |
| 6:00 PM | 18:00 | 7:30 AM | 07:30 | +1 Day | |
| 7:00 PM | 19:00 | 8:30 AM | 08:30 | +1 Day | |
| 8:00 PM | 20:00 | 9:30 AM | 09:30 | +1 Day | |
| 9:00 PM | 21:00 | 10:30 AM | 10:30 | +1 Day | |
| 10:00 PM | 22:00 | 11:30 AM | 11:30 | +1 Day | Night |
| 11:00 PM | 23:00 | 12:30 PM | 12:30 | +1 Day | Night |
Table uses the fixed standard offset of 13h 30m ahead. During DST transitions the actual gap may shift by one hour — use the live converter above which adjusts automatically.
🔗 Related Converters
💡 How to Convert PST to IST
❓ Frequently Asked Questions — PST to IST
What is the time difference between PST and IST?
India Standard Time (IST) is 13h 30m ahead of Pacific Standard Time (PST). PST runs at UTC-8 / UTC-7 (PDT) and IST at UTC+5:30. Quick time examples: 8:00 AM PST = 9:30 PM IST; 12:00 PM PST = 1:30 AM IST; 5:00 PM PST = 6:30 AM IST.
How do I convert PST to IST manually?
To convert PST to IST, add 13 hours 30 minutes to the PST time. For example, 12:00 PM PST becomes 1:30 AM IST. When the result crosses midnight, advance the date by one day (shown as "+1 Day" in the converter). Because IST uses a :30 offset, results always land on a :30-minute mark.
Is IST ahead of or behind PST?
India Standard Time (IST) is 13h 30m ahead of Pacific Standard Time (PST). Reversed: PST is 13h 30m behind of IST. Practical example: noon in New Delhi (12:00 PM IST) corresponds to 10:30 PM PST in Los Angeles, and 5 PM in New Delhi corresponds to 3:30 AM PST.
What is PST — Pacific Standard Time?
Pacific Standard Time (PST) is the standard civil time for Los Angeles and the surrounding region, operating at UTC-8 / UTC-7 (PDT) from UTC. It observes Daylight Saving Time and advances its clocks by one hour during summer — the effective offset changes seasonally. Major cities: Los Angeles, San Francisco, Seattle, Portland, San Diego, Las Vegas, Vancouver.
What is IST — India Standard Time?
India Standard Time (IST) covers New Delhi and the surrounding region at UTC+5:30 from UTC. It does not observe Daylight Saving Time — the offset is fixed at UTC+5:30 all year with no seasonal change. Cities in this zone: New Delhi, Mumbai, Bangalore, Chennai, Kolkata, Hyderabad, Colombo.
Does Daylight Saving Time affect the PST to IST difference?
Yes. PST observes Daylight Saving Time and moves its clocks by one hour in summer, while IST stays fixed at UTC+5:30 all year. This means the offset between the two zones shifts by one hour when PST enters or exits its DST period. The live converter on this page always shows the current accurate offset.
What is the best time to schedule a meeting between PST and IST?
The best meeting window is where standard working hours (9 AM – 6 PM) overlap in both zones. Since IST is 13h 30m ahead of PST, mornings in the earlier zone align with afternoons or evenings in the later zone. Target 8 AM – 11 AM in the earlier-offset zone to keep both sides in reasonable hours. The meeting hours table above shows the exact recommended slots for this pair. Any time where one side falls before 7 AM or after 9 PM is best avoided for regular team calls.
How do I convert IST back to PST?
Type any time directly into the IST field in the bidirectional converter above — it instantly shows the PST result. Alternatively, subtract 13 hours 30 minutes from the IST time manually. For a dedicated reverse page, visit: IST to PST converter ↗.
Do PST to IST conversions cross midnight?
Yes — this is a large offset, and many hours will cross midnight. When the converted time passes 11:59 PM, the date advances — the converter shows "+1 Day". When it goes before 12:00 AM, the date moves back — "-1 Day" appears. The 24-hour reference table also shows day changes in the Day column. Always check the date indicator when sending calendar invites across these two zones to avoid accidentally booking on the wrong date.
Which cities and countries use PST?
Pacific Standard Time (PST) is used in: Los Angeles, San Francisco, Seattle, Portland, San Diego, Las Vegas, Vancouver. The zone operates at UTC-8 / UTC-7 (PDT)and shifts by one hour during DST.
Which cities and countries use IST?
India Standard Time (IST) covers: New Delhi, Mumbai, Bangalore, Chennai, Kolkata, Hyderabad, Colombo. It runs at UTC+5:30, fixed year-round with no DST change. Use the live clocks at the top of this page to see the current local time in both zones side by side.
Is 13h 30m ahead always the exact difference between PST and IST?
The standard offset is 13h 30m ahead, but this can shift by one hour during DST transition periods. When PST moves to or from its daylight variant, the gap changes. The live converter always shows the current accurate offset.
How do I set up a recurring calendar event between PST and IST?
When creating a recurring meeting that spans PST and IST, set the event timezone in your calendar app using the IANA timezone names: America/Los_Angeles for PST and Asia/Kolkata for IST. Using IANA names rather than fixed UTC offsets ensures the calendar app automatically adjusts future occurrences for any DST changes, so you never accidentally schedule at the wrong time after a clock transition. For a quick lookup of any specific time, the converter on this page is the fastest way to verify both sides before you send the invite.
What is the difference between PST and PDT?
PST (Pacific Standard Time) is UTC-8 and applies during winter, roughly from early November to mid-March. PDT (Pacific Daylight Time) is UTC-7 and applies during summer when the US West Coast moves its clocks forward by one hour. In everyday speech, people often say "PST" year-round even when technically on PDT. The live clocks and converter on this page use the America/Los_Angeles IANA zone, which automatically switches between PST and PDT based on the current date — so you always see the correct offset without needing to track the transition yourself.
Why does IST use a :30 half-hour offset?
India Standard Time is fixed at UTC+5:30 rather than a whole-hour offset because India uses a single nationwide timezone. Given the country's wide east-west geographic span, a half-hour compromise best approximates solar noon across most of India without forcing two separate zones. No part of India observes Daylight Saving Time, so IST stays at UTC+5:30 every day of the year. The practical effect: any conversion involving IST will always land on a :30-minute mark (e.g., 8:00 AM PST = 9:30 PM IST).