Инструменты Intosoft

IST to Saudi Arabia

-2h 30m

IST

ISTSOURCE
UTC+05:30
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

Saudi Arabia

AST
UTC+03:00
HH09
:
MM30
  
09:30 (24-hr)
12 AM6 AM12 PM6 PM12 AM
IST
Saudi Arabia
12:00 AM
9:30 PM-1
2:00 AM
11:30 PM-1
4:00 AM
1:30 AM
6:00 AM
3:30 AM
8:00 AM
5:30 AM
10:00 AM
7:30 AM
12:00 PM
9:30 AM
2:00 PM
11:30 AM
4:00 PM
1:30 PM
6:00 PM
3:30 PM
8:00 PM
5:30 PM
10:00 PM
7:30 PM

Green rows indicate typical business hours (9 AM - 5 PM)

IST and AST on the World Map

The map below highlights the IST (India Standard Time) and AST (Arabia Standard Time) timezone regions across the globe.

ISTASTMumbaiDelhiBangaloreKolkataRiyadhJeddahDohaKuwait City
IST Zone
→
AST Zone

Explore all world timezones interactively →

IST – India Standard Time

UTC+05:30

India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.

Countries in IST
IndiaSri Lanka
Major Cities in IST
MumbaiDelhiBangaloreKolkataChennaiHyderabadPuneAhmedabadColomboJaipurLucknowSurat
Key Facts about IST
  • •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
  • •India uses a single time zone despite spanning 30° of longitude.
  • •IST is one of only a handful of time zones with a 30-minute offset.
  • •IST is the most populous single time zone in the world with over 1.4 billion people.
  • •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
Daylight Saving:No – UTC+05:30 year-round
Learn more about IST on Wikipedia

AST – Arabia Standard Time

UTC+03:00

Arabia Standard Time (AST, UTC+03:00) is the time zone for Saudi Arabia and the other Gulf states of the Arabian peninsula.

Countries in AST
Saudi ArabiaQatarKuwaitBahrainIraqYemen
Major Cities in AST
RiyadhJeddahDohaKuwait CityBaghdad
Key Facts about AST
  • •None of the Gulf states on Arabia Standard Time observe daylight saving.
  • •AST is the same offset as Moscow Standard Time and East Africa Time.
  • •Riyadh is one hour ahead of Central European Time in winter.
  • •The AST abbreviation is shared with Atlantic Standard Time (UTC-04:00).
Daylight Saving:No – UTC+03:00 year-round
Learn more about AST on Wikipedia

IST to Saudi Arabia Time Difference – Complete Guide

IST runs on India Standard Time (IST) at UTC+05:30. Saudi Arabia runs on Arabian Standard Time (AST) at UTC+03:00. That puts IST 2 hours 30 minutes behind Saudi Arabia — a difference of -2h 30m at the current offsets.

In practice, when it is 9:00 AM in IST it is 6:30 AM in Saudi Arabia. Midnight in IST is 9:30 PM in Saudi Arabia. Neither zone observes daylight saving time, so the offset between them stays constant all year.

IST to Saudi Arabia time conversion table

IST (IST)Saudi Arabia (AST)Day
12:00 AM9:30 PMprevious day
6:00 AM3:30 AMsame day
7:00 AM4:30 AMsame day
8:00 AM5:30 AMsame day
9:00 AM6:30 AMsame day
12:00 PM9:30 AMsame day
3:00 PM12:30 PMsame day
5:00 PM2:30 PMsame day
6:00 PM3:30 PMsame day
9:00 PM6:30 PMsame day

Why people convert IST to Saudi Arabia time

  • Scheduling a call from IST to Saudi Arabia: a 10:00 AM start in IST lands at 7:30 AM in Saudi Arabia, so you can confirm the slot without doing the arithmetic yourself.
  • Finding shared working hours: both IST and Saudi Arabia are inside the 9-to-5 working day between 11:30 AM and 5:00 PM IST time (9:00 AM–2:30 PM AST). That is roughly 5 hours 30 minutes of usable overlap.
  • Booking travel or deliveries: tracking Saudi Arabia local time against IST keeps pickup windows and arrival estimates honest across the -2h 30m offset.
  • Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a -2h 30m gap is not.
  • Block 11:30 AM–5:00 PM IST as the recurring meeting window if you work primarily from IST and need Saudi Arabia colleagues present.

About IST (India Standard Time)

India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.

About AST (Arabia Standard Time)

Arabia Standard Time (AST) is fixed at UTC+03:00 all year across Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq and Yemen. None of these countries observes daylight saving time, so the offset never changes. The abbreviation collides with Atlantic Standard Time (UTC-04:00) used in eastern Canada and the Caribbean; this page covers the Arabian peninsula meaning. Arabia Standard Time is the same offset as Moscow Standard Time and East Africa Time, which makes scheduling with Europe straightforward — Riyadh is one hour ahead of Central European Time in winter and level with it during European summer time.

Best time to call between IST and Saudi Arabia

Both IST and Saudi Arabia sit inside the 9 AM – 5 PM working day between 11:30 AM–5:00 PM IST, which is 9:00 AM–2:30 PM AST. That gives roughly 5 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

IST and Saudi Arabia share 5 hours of working-hours overlap (11:30 AM–5:00 PM IST), so scheduling a live meeting is straightforward.

IST is 2 hours 30 minutes behind Saudi Arabia (IST UTC+05:30 → AST UTC+03:00). The shared working window is 11:30 AM–5:00 PM IST. Remember to re-check around daylight-saving transitions.

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳
History of Timekeeping
From sundials to atomic clocks - 5000 years of measuring time
🌍
How Time Zones Work
UTC, offsets, and why zones don't follow straight lines
☀️
Daylight Saving Time
DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between IST and Saudi Arabia?

IST (IST, UTC+05:30) is 2 hours 30 minutes behind Saudi Arabia (AST, UTC+03:00). The gap is currently -2h 30m.

How do I convert IST time to Saudi Arabia time?

Add -2h 30m to IST local time. For example, 9:00 AM in IST is 6:30 AM in Saudi Arabia.

What time is it in Saudi Arabia right now?

Saudi Arabia uses AST at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h 30m offset from IST.

What is the best time to call Saudi Arabia from IST?

Call between 11:30 AM and 5:00 PM IST — that maps to 9:00 AM–2:30 PM AST and keeps both parties inside the working day.

Which is behind, IST or Saudi Arabia?

IST is 2 hours 30 minutes behind Saudi Arabia. When it is 12:00 PM in IST it is 9:30 AM in Saudi Arabia.

Do IST and Saudi Arabia use different time zones?

IST uses IST at UTC+05:30, while Saudi Arabia (Saudi Arabia) uses AST at UTC+03:00. The IANA identifiers are Asia/Kolkata and Asia/Riyadh.

Does daylight saving time affect the IST–Saudi Arabia difference?

Neither zone observes daylight saving time, so the -2h 30m offset between IST and Saudi Arabia is fixed all year.

Which other cities share IST's time zone?

IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.

Which countries use IST, IST's zone?

IST is used in India, Sri Lanka.

Is there a day difference between IST and Saudi Arabia?

Not normally. The -2h 30m gap only pushes the date over the previous day.

What is the time difference between IST and Saudi Arabia?

Saudi Arabia is -2h 30m from IST.

What timezone is IST in?

IST operates on its local timezone.

What timezone is Saudi Arabia in?

Saudi Arabia operates on its local timezone.

Which countries use IST (India Standard Time)?

IST is used in India, Sri Lanka.

Does IST observe daylight saving time?

No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.

What are some interesting facts about IST?

India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.

Which cities are in the AST timezone?

Major cities in the AST timezone include Riyadh, Jeddah, Doha, Kuwait City, Baghdad.

What is the UTC offset for AST?

Arabia Standard Time (AST) is at UTC+03:00.

What should I know about the AST timezone?

None of the Gulf states on Arabia Standard Time observe daylight saving. AST is the same offset as Moscow Standard Time and East Africa Time.

When is it midnight in IST, what time is it in Saudi Arabia?

When it is 12:00 AM (midnight) in IST (IST), it is -2h 30m later in Saudi Arabia (AST).

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