Offset
The time difference between Delhi and Tehran is 2 hours.
Delhi (IST) is ahead of Tehran (IRST).
IST: UTC+5:30
IRST: UTC+3:30
Neither Delhi nor Tehran is currently observing daylight saving time.
When to schedule
Business-hours overlap: 11 AM–5 PM in Delhi (9 AM–3 PM in Tehran).
Both teams are in working hours during this window on weekdays.
Suggested time: 2:00 PM Delhi (12:00 PM Tehran).
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Delhi | Tehran | Day |
|---|---|---|
| 12:00 am | 10:00 pm | -1 day |
| 1:00 am | 11:00 pm | -1 day |
| 2:00 am | 12:00 am | Same day |
| 3:00 am | 1:00 am | Same day |
| 4:00 am | 2:00 am | Same day |
| 5:00 am | 3:00 am | Same day |
| 6:00 am | 4:00 am | Same day |
| 7:00 am | 5:00 am | Same day |
| 8:00 am | 6:00 am | Same day |
| 9:00 am | 7:00 am | Same day |
| 10:00 am | 8:00 am | Same day |
| 11:00 am | 9:00 am | Same day |
| 12:00 pm | 10:00 am | Same day |
| 1:00 pm | 11:00 am | Same day |
| 2:00 pm | 12:00 pm | Same day |
| 3:00 pm | 1:00 pm | Same day |
| 4:00 pm | 2:00 pm | Same day |
| 5:00 pm | 3:00 pm | Same day |
| 6:00 pm | 4:00 pm | Same day |
| 7:00 pm | 5:00 pm | Same day |
| 8:00 pm | 6:00 pm | Same day |
| 9:00 pm | 7:00 pm | Same day |
| 10:00 pm | 8:00 pm | Same day |
| 11:00 pm | 9:00 pm | Same day |
Daylight saving time
Neither Delhi nor Tehran observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:24 AM
- Sunset
- 7:18 PM
- Day length
- 13h 55m
- Sunrise
- 4:49 AM
- Sunset
- 7:19 PM
- Day length
- 14h 30m
Daylight overlap: 12h 29m — 6:49 AM–7:18 PM in Delhi (4:49 AM–5:18 PM in Tehran). Both locations are in daylight during this window.
Cities in these zones
Other cities in India Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in India Standard Time
- BOM
- NMI
- DEL
- BLR
- HYD
- AMD
- MAA
- CCU
- STV
- PNQ
Airports in Iran Standard Time
- IKA
- THR
- MHD
- IFN
- PYK
- TBZ
Related conversions
Common conversions
- What is 9:00 am Delhi in Tehran?
- 9:00 am Delhi is 7:00 am Tehran.
- What is 12:00 pm Delhi in Tehran?
- 12:00 pm Delhi is 10:00 am Tehran.
- What is 12:30 pm Delhi in Tehran?
- 12:30 pm Delhi is 10:30 am Tehran.
- What is 2:00 pm Delhi in Tehran?
- 2:00 pm Delhi is 12:00 pm Tehran.
- What is 5:00 pm Delhi in Tehran?
- 5:00 pm Delhi is 3:00 pm Tehran.
- What is 11:30 pm Delhi in Tehran?
- 11:30 pm Delhi is 9:30 pm Tehran.