O'Fallon, MO, USA to Tehran, Iran
Time Difference
CST (Central Standard Time) is 9 hours and 30 minutes behind IST (Iran Standard Time)
3:30 am03:30 in O'Fallon, MO, USA is 1:00 pm13:00 in Tehran, Iran
O'Fallon to Tehran call time
Best time for a conference call or a meeting is between 8am-10am in O'Fallon which corresponds to 5:30pm-7:30pm in Tehran
3:30 am03:30 CST (Central Standard Time) (O'Fallon, MO, USA). Offset UTC -6:00 hours
1:00 pm13:00 IST (Iran Standard Time) (Tehran, Iran). Offset UTC +3:30 hours
3:30 am03:30 O'Fallon, MO, USA / 1:00 pm13:00 Tehran, Iran
| O'Fallon, MO, USA | Tehran, Iran |
|---|---|
| 12am (midnight) | 9:30 am |
| 1am | 10:30 am |
| 2am | 11:30 am |
| 3am | 12:30 pm |
| 4am | 1:30 pm |
| 5am | 2:30 pm |
| 6am | 3:30 pm |
| 7am | 4:30 pm |
| 8am | 5:30 pm |
| 9am | 6:30 pm |
| 10am | 7:30 pm |
| 11am | 8:30 pm |
| 12pm (noon) | 9:30 pm |
| 1pm | 10:30 pm |
| 2pm | 11:30 pm |
| 3pm | 12:30 am |
| 4pm | 1:30 am |
| 5pm | 2:30 am |
| 6pm | 3:30 am |
| 7pm | 4:30 am |
| 8pm | 5:30 am |
| 9pm | 6:30 am |
| 10pm | 7:30 am |
| 11pm | 8:30 am |
| 0:00 | 9:30 |
| 1:00 | 10:30 |
| 2:00 | 11:30 |
| 3:00 | 12:30 |
| 4:00 | 13:30 |
| 5:00 | 14:30 |
| 6:00 | 15:30 |
| 7:00 | 16:30 |
| 8:00 | 17:30 |
| 9:00 | 18:30 |
| 10:00 | 19:30 |
| 11:00 | 20:30 |
| 12:00 | 21:30 |
| 13:00 | 22:30 |
| 14:00 | 23:30 |
| 15:00 | 0:30 |
| 16:00 | 1:30 |
| 17:00 | 2:30 |
| 18:00 | 3:30 |
| 19:00 | 4:30 |
| 20:00 | 5:30 |
| 21:00 | 6:30 |
| 22:00 | 7:30 |
| 23:00 | 8:30 |
O'Fallon Information
Time Zone
Abbreviation / Name
CST - Central Standard Time
CDT - Central Daylight Time
CDT - Central Daylight Time
UTC / GMT Offset
-6:00 hours during Central Standard Time, currently in use.
-5:00 hours during Central Daylight Time.
-5:00 hours during Central Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Sunday, March 10, 2024 at 2:00 am local time. DST starts annually the on second Sunday of March. Clocks are turned forward 1 hour to Sunday, March 10, 2024, 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Sunday, November 3, 2024 at 2:00 am local time. DST ends annually the on first Sunday of November. Clocks are turned backward 1 hour to Sunday, November 3, 2024, 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.
O'Fallon Facts
Country
USA
State
Missouri
Alternative Names
O'Fallon, O'Fallon Station
Population
85,040
Currency
Dollar (USD)
Geographic Coordinates
38° 48' N Latitude / 90° 41' W Longitude
International Dialing Code
+1
Tehran Information
Time Zone
Abbreviation / Name
IST - Iran Standard Time
IRDT - Iran Daylight Time
IRDT - Iran Daylight Time
UTC / GMT Offset
+3:30 hours during Iran Standard Time, currently in use.
+4:30 hours during Iran Daylight Time.
+4:30 hours during Iran Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Also called Fall Back or switch to Winter Time.
Tehran Facts
Country
Iran
Alternative Names
THR, Taekhran, Tahran, Techerane, Teera, Teerao, Teerã, Teerão, Tegeran, Teheran, Teherana, Teheranas, Teherano, Teherán, Teherāna, Tehran, Tehrano, Tekheran, Téhéran, de hei lan, teharan, teharana, tehelan, teheran, tehran, teirani, thran, thrn, thrwn, tihiran, tihran, Τεχεράνη, Тæхран, Тегеран, Техеран, Теҳрон, Թեհրան, טהראן, טהרן, تهران, تهرون, تِهران, تِهِرَن, تہران, طهران, ܛܗܪܐܢ, तेहरान, তেহরান, தெஹ்ரான், เตหะราน, ཏེ་ཧི་རན།, თეირანი, ቴህራን, テヘラン, 德黑兰, 테헤란
Population
7,153,309
Currency
Rial (IRR)
Geographic Coordinates
35° 41' N Latitude / 51° 25' E Longitude
International Dialing Code
+98