Time in CST and IRST
The time difference between Central Standard Time (CST) and Iran Standard Time (IRST) is 9 hours 30 minutes. Iran Standard Time is 9 hours 30 minutes ahead of Central Standard Time.
This means 9am CST is 6:30pm IRST and 5pm CST is 2:30am IRST (next day).
Central Standard Time
- The current local time in CST is 7:23 pm (July 3, 2026)
- CST time zone offset is UTC-06:00
Iran Standard Time
- The current local time in IRST is 4:53 pm (July 3, 2026)
- IRST time zone offset is UTC+03:30
How to convert Central Standard Time to Iran Standard Time?
Add 9 hours 30 minutes to Central Standard Time to get Iran Standard Time.
Time in CST
00:00
Time in IRST
00:00
Use the slider above to convert Central Standard Time to Iran Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| CST | IRST |
|---|---|
| 12am | 9:30am |
| 1am | 10:30am |
| 2am | 11:30am |
| 3am | 12:30pm |
| 4am | 1:30pm |
| 5am | 2:30pm |
| 6am | 3:30pm |
| 7am | 4:30pm |
| 8am | 5:30pm |
| 9am | 6:30pm |
| 10am | 7:30pm |
| 11am | 8:30pm |
| 12pm | 9:30pm |
| 1pm | 10:30pm |
| 2pm | 11:30pm |
| 3pm | 0:30am |
| 4pm | 1:30am |
| 5pm | 2:30am |
| 6pm | 3:30am |
| 7pm | 4:30am |
| 8pm | 5:30am |
| 9pm | 6:30am |
| 10pm | 7:30am |
| 11pm | 8:30am |