SCT to IRDT Converter
IRDT is not used on this date.
This converter uses IRST (UTC+3:30), as in Tehran.
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
4:00 pm16:00 SCT (UTC+4), Oct 23, 2026 = 3:30 pm15:30 IRST (UTC+3:30), Oct 23, 2026
SCT is 30 minutes ahead of IRST.
SCT and IRDT examples
These examples always use SCT (UTC+4) and IRDT (UTC+4:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
SCT is 30 minutes behind IRDT.
How the time difference changes
SCT is 30 minutes ahead of IRST year-round.
Working hours of 9:00 am to 6:00 pm in SCT correspond to 8:30 am to 5:30 pm in IRST.Working hours of 09:00 to 18:00 in SCT correspond to 08:30 to 17:30 in IRST.
Compare SCT time with IRDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Seychelles Time is 30 minutes ahead of Iran Standard Time.
4:00 pm16:00 in SCT is 3:30 pm15:30 in IRST
SCT to IRST call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in SCT which corresponds to 9am-5:30pm09:00-17:30 in IRST
4:00 pm16:00 Seychelles Time (SCT). Offset UTC +4:00 hours
3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
4:00 pm16:00 SCT / 3:30 pm15:30 IRST
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
| SCT | IRST |
|---|---|
| 11:30pm previous day | |
| 12:30am | |
| 1:30am | |
| 2:30am | |
| 3:30am | |
| 4:30am | |
| 5:30am | |
| 6:30am | |
| 7:30am | |
| 8:30am | |
| 9:30am | |
| 10:30am | |
| 11:30am | |
| 12:30pm | |
| 1:30pm | |
| 2:30pm | |
| 3:30pm | |
| 4:30pm | |
| 5:30pm | |
| 6:30pm | |
| 7:30pm | |
| 8:30pm | |
| 9:30pm | |
| 10:30pm | |
| 23:30 previous day | |
| 00:30 | |
| 01:30 | |
| 02:30 | |
| 03:30 | |
| 04:30 | |
| 05:30 | |
| 06:30 | |
| 07:30 | |
| 08:30 | |
| 09:30 | |
| 10:30 | |
| 11:30 | |
| 12:30 | |
| 13:30 | |
| 14:30 | |
| 15:30 | |
| 16:30 | |
| 17:30 | |
| 18:30 | |
| 19:30 | |
| 20:30 | |
| 21:30 | |
| 22:30 |
Seychelles Time
Offset: SCT is 4 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Seychelles
Principal Cities: The largest city in the SCT time zone is Victoria in Seychelles, with about 22,881 people. Other major cities in this time zone include Cascade, Perseverance, Baie Sainte Anne, Baie Lazare.
Daylight Saving: Clocks in Seychelles Time (SCT) do not change for daylight saving time, so SCT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
SCT representations, usage and related time zones
- +04 - basic short
- +0400 - basic
- +04:00 - extended
- +0400 - sign character (+) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the east of the zero meridian.
- Delta - Military abbreviation for SCT
- D - short form of 'Delta'
- KUYT - Kuybyshev Time
- MSD - Moscow Daylight Time
- SAMT - Samara Time
- AMT - Armenia Time
- AZT - Azerbaijan Time
- D - Delta Time Zone
- GET - Georgia Standard Time
- GST - Gulf Standard Time
- MUT - Mauritius Time
- RET - Reunion Time
- SCT - Seychelles Time
Iran Daylight Time
Offset: IRDT is 4 hours and 30 minutes ahead of Greenwich Mean Time (GMT).
IRDT representations, usage and related time zones
- +0430 - basic
- +04:30 - extended
- +0430 - sign character (+) followed by a four digit time providing hours (04) and minutes (30) of the offset. Indicates an offset of four hours and thirty minutes to the east of the zero meridian.
- AFT - Afghanistan Time
- IRDT - Iran Daylight Time