SAST to Tehran
+1h 30mSAST
SASTSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
SAST and IRST on the World Map
The map below highlights the SAST (South Africa Standard Time) and IRST (Iran Standard Time) timezone regions across the globe.
SAST – South Africa Standard Time
UTC+02:00South Africa Standard Time (SAST) is the time zone for South Africa and neighboring countries, 2 hours ahead of UTC.
- •South Africa does not observe daylight saving time.
- •SAST is the same offset as EET and Israel Standard Time.
- •The Johannesburg Stock Exchange (JSE) is Africa's largest.
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •IRST is one of only a few time zones with a 30-minute offset.
- •Iran observes daylight saving time, switching to IRDT (UTC+04:30).
- •Tehran has a metropolitan population of over 16 million.
About Tehran
WikipediaTehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).
SAST to Tehran Time Difference – Complete Guide
SAST runs on South Africa Standard Time (SAST) at UTC+02:00. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts SAST 1 hour 30 minutes ahead of Tehran — a difference of +1h 30m at the current offsets.
In practice, when it is 9:00 AM in SAST it is 10:30 AM in Tehran. Midnight in SAST is 1:30 AM in Tehran. Neither zone observes daylight saving time, so the offset between them stays constant all year.
SAST to Tehran time conversion table
| SAST (SAST) | Tehran (IRST) | Day |
|---|---|---|
| 12:00 AM | 1:30 AM | same day |
| 6:00 AM | 7:30 AM | same day |
| 7:00 AM | 8:30 AM | same day |
| 8:00 AM | 9:30 AM | same day |
| 9:00 AM | 10:30 AM | same day |
| 12:00 PM | 1:30 PM | same day |
| 3:00 PM | 4:30 PM | same day |
| 5:00 PM | 6:30 PM | same day |
| 6:00 PM | 7:30 PM | same day |
| 9:00 PM | 10:30 PM | same day |
Why people convert SAST to Tehran time
- Scheduling a call from SAST to Tehran: a 10:00 AM start in SAST lands at 11:30 AM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both SAST and Tehran are inside the 9-to-5 working day between 9:00 AM and 3:30 PM SAST time (10:30 AM–5:00 PM IRST). That is roughly 6 hours 30 minutes of usable overlap.
- Booking travel or deliveries: tracking Tehran local time against SAST keeps pickup windows and arrival estimates honest across the +1h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM SAST" is unambiguous; "3 PM" across a +1h 30m gap is not.
- Block 9:00 AM–3:30 PM SAST as the recurring meeting window if you work primarily from SAST and need Tehran colleagues present.
About SAST (South Africa Standard Time)
South Africa Standard Time (SAST) is used in South Africa, Lesotho, and Eswatini. SAST does not observe daylight saving time. Johannesburg and Cape Town are major economic hubs in Africa.
About IRST (Iran Standard Time)
Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.
Best time to call between SAST and Tehran
Both SAST and Tehran sit inside the 9 AM – 5 PM working day between 9:00 AM–3:30 PM SAST, which is 10:30 AM–5:00 PM IRST. That gives roughly 6 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
SAST and Tehran share 6 hours of working-hours overlap (9:00 AM–3:30 PM SAST), so scheduling a live meeting is straightforward.
SAST is 1 hour 30 minutes ahead of Tehran (SAST UTC+02:00 → IRST UTC+03:30). The shared working window is 9:00 AM–3:30 PM SAST. 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:
Frequently Asked Questions
What is the time difference between SAST and Tehran?
SAST (SAST, UTC+02:00) is 1 hour 30 minutes ahead of Tehran (IRST, UTC+03:30). The gap is currently +1h 30m.
How do I convert SAST time to Tehran time?
Add +1h 30m to SAST local time. For example, 9:00 AM in SAST is 10:30 AM in Tehran.
What time is it in Tehran right now?
Tehran uses IRST at UTC+03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h 30m offset from SAST.
What is the best time to call Tehran from SAST?
Call between 9:00 AM and 3:30 PM SAST — that maps to 10:30 AM–5:00 PM IRST and keeps both parties inside the working day.
Which is ahead, SAST or Tehran?
SAST is 1 hour 30 minutes ahead of Tehran. When it is 12:00 PM in SAST it is 1:30 PM in Tehran.
Do SAST and Tehran use different time zones?
SAST uses SAST at UTC+02:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are Africa/Johannesburg and Asia/Tehran.
Does daylight saving time affect the SAST–Tehran difference?
Neither zone observes daylight saving time, so the +1h 30m offset between SAST and Tehran is fixed all year.
Which other cities share SAST's time zone?
SAST also covers Johannesburg, Cape Town, Durban, Pretoria, Port Elizabeth.
Which countries use SAST, SAST's zone?
SAST is used in South Africa, Lesotho, Eswatini.
Is there a day difference between SAST and Tehran?
Not normally. The +1h 30m gap only pushes the date over for late-evening times.
What is the time difference between SAST and Tehran?
Tehran is +1h 30m from SAST.
What timezone is SAST in?
SAST operates on its local timezone.
What timezone is Tehran in?
Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
What are the business hours in Tehran?
Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.
Which countries use SAST (South Africa Standard Time)?
SAST is used in South Africa, Lesotho, Eswatini.
Does SAST observe daylight saving time?
No, SAST does not observe daylight saving time and remains at UTC+02:00 year-round.
What are some interesting facts about SAST?
South Africa does not observe daylight saving time. SAST is the same offset as EET and Israel Standard Time.
Which cities are in the IRST timezone?
Major cities in the IRST timezone include Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
What is the UTC offset for IRST?
Iran Standard Time (IRST) is at UTC+03:30. During daylight saving time, it shifts to IRDT.
What should I know about the IRST timezone?
IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).
When is it midnight in SAST, what time is it in Tehran?
When it is 12:00 AM (midnight) in SAST (SAST), it is +1h 30m later in Tehran (IRST).
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