Offset
The time difference between Indochina Time and Iran Standard Time is 3.5 hours.
Indochina Time (ICT) is ahead of Iran Standard Time (IRST).
ICT: UTC+7
IRST: UTC+3:30
Neither Indochina Time nor Iran Standard Time is currently observing daylight saving time.
When to schedule
Business-hours overlap: 1 PM–5 PM in Indochina Time (9 AM–1 PM in Iran Standard Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 3:00 PM Indochina Time (11:30 AM Iran Standard Time).
About these zones
Indochina Time is also known as ICT. To call Thailand, dial +66.
Iran Standard Time is also known as IRST. To call Iran, dial +98.
Iran Standard Time is approximately 3,400 miles northwest of Indochina Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| ICT | IRST | Day |
|---|---|---|
| 12:00 am | 8:30 pm | -1 day |
| 1:00 am | 9:30 pm | -1 day |
| 2:00 am | 10:30 pm | -1 day |
| 3:00 am | 11:30 pm | -1 day |
| 4:00 am | 12:30 am | Same day |
| 5:00 am | 1:30 am | Same day |
| 6:00 am | 2:30 am | Same day |
| 7:00 am | 3:30 am | Same day |
| 8:00 am | 4:30 am | Same day |
| 9:00 am | 5:30 am | Same day |
| 10:00 am | 6:30 am | Same day |
| 11:00 am | 7:30 am | Same day |
| 12:00 pm | 8:30 am | Same day |
| 1:00 pm | 9:30 am | Same day |
| 2:00 pm | 10:30 am | Same day |
| 3:00 pm | 11:30 am | Same day |
| 4:00 pm | 12:30 pm | Same day |
| 5:00 pm | 1:30 pm | Same day |
| 6:00 pm | 2:30 pm | Same day |
| 7:00 pm | 3:30 pm | Same day |
| 8:00 pm | 4:30 pm | Same day |
| 9:00 pm | 5:30 pm | Same day |
| 10:00 pm | 6:30 pm | Same day |
| 11:00 pm | 7:30 pm | Same day |
Daylight saving time
Neither Indochina Time nor Iran Standard Time 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
- 5:50 AM
- Sunset
- 6:44 PM
- Day length
- 12h 54m
- Sunrise
- 4:50 AM
- Sunset
- 7:18 PM
- Day length
- 14h 28m
Daylight overlap: 10h 24m — 8:20 AM–6:44 PM in Indochina Time (4:50 AM–3:14 PM in Iran Standard Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Indochina Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Indochina Time
- HAN
- BKK
- DMK
- HPH
Airports in Iran Standard Time
- IKA
- THR
- MHD
- IFN
- PYK
- TBZ
Related conversions
Common conversions
- What is 9:00 am ICT in IRST?
- 9:00 am ICT is 5:30 am IRST.
- What is 12:00 pm ICT in IRST?
- 12:00 pm ICT is 8:30 am IRST.
- What is 12:30 pm ICT in IRST?
- 12:30 pm ICT is 9:00 am IRST.
- What is 2:00 pm ICT in IRST?
- 2:00 pm ICT is 10:30 am IRST.
- What is 5:00 pm ICT in IRST?
- 5:00 pm ICT is 1:30 pm IRST.
- What is 11:30 pm ICT in IRST?
- 11:30 pm ICT is 8:00 pm IRST.