IST to Riyadh
India is 2 hours and 30 minutes ahead of Riyadh.
Times may vary due to daylight saving time.Quick answer. Riyadh is 2 hours and 30 minutes behind IST, and that gap never changes. Neither IST nor Riyadh observes daylight saving time, so the same conversion is correct on every date of the year.
Time difference
India Standard Time (IST)
IST UTC+5:30 No DST
Mumbai, Delhi, Bengaluru, Chennai, Kolkata, Hyderabad.
India runs on a single time zone, UTC+5:30, and has not observed daylight saving time since 1945. The half-hour offset is why IST conversions rarely land on a round hour.
Riyadh, Saudi Arabia
AST UTC+3:00 No DST
Riyadh and the rest of Saudi Arabia.
AST, UTC+3, no DST
IST to Riyadh conversion table
Every hour of the day for 2026. Neither side observes daylight saving, so this table is correct on every date of the year.
| IST | Riyadh | 24-hour |
|---|---|---|
| 12 AM | 9:30 PM −1 day | 21:30 |
| 1 AM | 10:30 PM −1 day | 22:30 |
| 2 AM | 11:30 PM −1 day | 23:30 |
| 3 AM | 12:30 AM | 00:30 |
| 4 AM | 1:30 AM | 01:30 |
| 5 AM | 2:30 AM | 02:30 |
| 6 AM | 3:30 AM | 03:30 |
| 7 AM | 4:30 AM | 04:30 |
| 8 AM | 5:30 AM | 05:30 |
| 9 AM | 6:30 AM | 06:30 |
| 10 AM | 7:30 AM | 07:30 |
| 11 AM | 8:30 AM | 08:30 |
| 12 PM | 9:30 AM | 09:30 |
| 1 PM | 10:30 AM | 10:30 |
| 2 PM | 11:30 AM | 11:30 |
| 3 PM | 12:30 PM | 12:30 |
| 4 PM | 1:30 PM | 13:30 |
| 5 PM | 2:30 PM | 14:30 |
| 6 PM | 3:30 PM | 15:30 |
| 7 PM | 4:30 PM | 16:30 |
| 8 PM | 5:30 PM | 17:30 |
| 9 PM | 6:30 PM | 18:30 |
| 10 PM | 7:30 PM | 19:30 |
| 11 PM | 8:30 PM | 20:30 |
Highlighted rows are the 6 hours where a 9–6 working day in IST overlaps a 9–5 working day in Riyadh.
Popular conversion times
| IST | Riyadh |
|---|---|
| 9 AM IST | 6:30 AM |
| 10 AM IST | 7:30 AM |
| 11 AM IST | 8:30 AM |
| 12 PM IST | 9:30 AM |
| 3 PM IST | 12:30 PM |
| 5 PM IST | 2:30 PM |
| 6 PM IST | 3:30 PM |
| 8 PM IST | 5:30 PM |
Business hours and meeting times
Comparing a 9:00–18:00 working day in IST against 9:00–17:00 in Riyadh, across the whole week — a slot only counts if it lands on a working day at both ends.
IST works Monday to Friday while Riyadh works Sunday to Thursday, so you share 4 working days a week — Monday to Thursday. Friday is a normal working day in IST but a weekend in Riyadh. Sunday is worked in Riyadh while IST is off.
Rows are days in IST. Columns are hours of the IST day.
Best recurring slot
1 PM IST = 10:30 AM Riyadh , every shared working day
Across the week that is 24 overlapping working hours . The widest day is Monday, with 6 hours.
| Day | Overlap (IST) | Local (Riyadh) | Hours |
|---|---|---|---|
| Monday | 12 PM – 6 PM | 9:30 AM – 3:30 PM | 6 |
| Tuesday | 12 PM – 6 PM | 9:30 AM – 3:30 PM | 6 |
| Wednesday | 12 PM – 6 PM | 9:30 AM – 3:30 PM | 6 |
| Thursday | 12 PM – 6 PM | 9:30 AM – 3:30 PM | 6 |
| Friday | Riyadh weekend | — | — |
| Saturday | IST weekend | — | — |
| Sunday | IST weekend | — | — |
Public holidays
A shared working day is only usable if neither side is on holiday — and India and Riyadh build their calendars on different systems, so the days each loses rarely coincide.
Over the next 8 weeks you share 32 working days. 2are lost to a public holiday on one side or the other, leaving 30.
| Date | Who is off | Holiday |
|---|---|---|
| Wednesday, September 23, 2026 | Riyadh | Saudi National Day |
| Tuesday, October 20, 2026 | India | Dussehra (Vijayadashami) |
Next holidays in India
- Friday, October 2, 2026Gandhi Jayantisame date every year
- Tuesday, October 20, 2026Dussehra (Vijayadashami)partialpublished date
- Sunday, November 8, 2026Diwalipublished date
- Monday, November 9, 2026Diwalipublished date
- Friday, December 25, 2026Christmas Daypartialsame date every year
India has three national holidays on which the whole country closes. Everything else is either a central-government gazetted holiday that individual employers choose to observe, or a state holiday. Festival dates follow lunisolar calendars and move every year, so they are listed explicitly rather than derived.
Next holidays in Riyadh
- Wednesday, September 23, 2026Saudi National Daysame date every year
- Monday, February 22, 2027Founding Daysame date every year
- Tuesday, March 9, 2027Eid al-Fitrpredicted — lunar calendar
- Wednesday, March 10, 2027Eid al-Fitrpredicted — lunar calendar
- Thursday, March 11, 2027Eid al-Fitrpredicted — lunar calendar
Saudi national holidays. The Kingdom does not observe 1 January. Eid holidays run for several days and are set by royal announcement.
Holiday dates for India and elsewhere come from a dataset last refreshed on 2026-09-12 (date.nager.at plus curated national calendars). Lunar dates — Eid, Chinese New Year, the Jewish holidays — are predicted and can move by a day once officially announced. Regional, state and employer-specific holidays are not included. Confirm anything you are booking a flight around.
About this conversion
India runs on a single time zone, UTC+5:30, and has not observed daylight saving time since 1945. The half-hour offset is why IST conversions rarely land on a round hour.
AST, UTC+3, no DST
Frequently asked questions
What is the time difference between IST and Riyadh?
Riyadh is 2 hours and 30 minutes behind IST, on every date of the year. Neither side observes daylight saving time.
What time is 9 AM IST in Riyadh?
9:00 AM IST is 6:30 AM in Riyadh, all year round.
What is the best time for a meeting between IST and Riyadh?
Working days overlap for about 6 hours on a typical Monday: 12 PM to 6 PM IST, which is 9:30 AM to 3:30 PM in Riyadh. For a recurring invite, 1 PM IST / 10:30 AM Riyadh is the slot that works on the most days.
Does India observe daylight saving time?
No. India has kept a single UTC+5:30 offset since 1945 and does not use daylight saving time, so IST reads the same on every date of the year. Any change in the gap to Riyadh comes entirely from the other side.
Do IST and Riyadh share the same working week?
IST works Monday to Friday while Riyadh works Sunday to Thursday, so you share 4 working days a week — Monday to Thursday. Friday is a normal working day in IST but a weekend in Riyadh. Sunday is worked in Riyadh while IST is off. The weekend here falls on Friday and Saturday, so Sunday is a normal working day and Friday is not. Against an Indian Monday-to-Friday week that leaves four shared working days, not five.
How many hours a week do IST and Riyadh actually overlap?
24 hours across the week, spread over 4 working days. 1 PM IST (10:30 AM Riyadh) is the slot that works on the most days, so it is the one to put in a recurring invite.
Do public holidays in IST and Riyadh line up?
Barely. Over the next eight weeks the two sides share 32 working days, and 2 of those are a public holiday on one side or the other, leaving 30. The next holiday in Riyadh is Saudi National Day on 2026-09-23. Indian, Gulf and Western holiday calendars are built on different systems, so the days each side loses rarely coincide.
Is IST ahead of Riyadh?
Yes. IST runs ahead of Riyadh by 2 hours and 30 minutes, so a working morning in IST lands the previous evening or night in Riyadh.
Converting the other way
Looking up times starting from Riyadh? Use the Riyadh to IST converter, which leads with Riyadh as the starting point and is written for that reader.
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