Ottawa, Canada to Tehran, Iran
Compare Ottawa time with Tehran time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
EST (Eastern Standard Time) is 8 hours and 30 minutes behind IRST (Iran Standard Time)
7:00 am07:00 in Ottawa, Canada is 3:30 pm15:30 in Tehran, Iran
Ottawa to Tehran call time
Best time for a conference call or a meeting is between 8:30am-9:30am in Ottawa which corresponds to 5pm-6pm in Tehran
7:00 am07:00 EST (Eastern Standard Time) (Ottawa, Canada). Offset UTC -5:00 hours
3:30 pm15:30 IRST (Iran Standard Time) (Tehran, Iran). Offset UTC +3:30 hours
7:00 am07:00 Ottawa, Canada / 3:30 pm15:30 Tehran, Iran
| Ottawa, Canada | Tehran, Iran |
|---|---|
| 12am (midnight) | 8:30 am |
| 1am | 9:30 am |
| 2am | 10:30 am |
| 3am | 11:30 am |
| 4am | 12:30 pm |
| 5am | 1:30 pm |
| 6am | 2:30 pm |
| 7am | 3:30 pm |
| 8am | 4:30 pm |
| 9am | 5:30 pm |
| 10am | 6:30 pm |
| 11am | 7:30 pm |
| 12pm (noon) | 8:30 pm |
| 1pm | 9:30 pm |
| 2pm | 10:30 pm |
| 3pm | 11:30 pm |
| 4pm | 12:30 am |
| 5pm | 1:30 am |
| 6pm | 2:30 am |
| 7pm | 3:30 am |
| 8pm | 4:30 am |
| 9pm | 5:30 am |
| 10pm | 6:30 am |
| 11pm | 7:30 am |
| 00:00 | 08:30 |
| 01:00 | 09:30 |
| 02:00 | 10:30 |
| 03:00 | 11:30 |
| 04:00 | 12:30 |
| 05:00 | 13:30 |
| 06:00 | 14:30 |
| 07:00 | 15:30 |
| 08:00 | 16:30 |
| 09:00 | 17:30 |
| 10:00 | 18:30 |
| 11:00 | 19:30 |
| 12:00 | 20:30 |
| 13:00 | 21:30 |
| 14:00 | 22:30 |
| 15:00 | 23:30 |
| 16:00 | 00:30 |
| 17:00 | 01:30 |
| 18:00 | 02:30 |
| 19:00 | 03:30 |
| 20:00 | 04:30 |
| 21:00 | 05:30 |
| 22:00 | 06:30 |
| 23:00 | 07:30 |
Ottawa Information
Time Zone
Abbreviation / Name
EDT - Eastern Daylight Time
EST - Eastern Standard Time
EST - Eastern Standard Time
UTC / GMT Offset
-4:00 hours during Eastern Daylight Time, currently in use.
-5:00 hours during Eastern Standard Time.
-5:00 hours during Eastern Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Sunday, March 8, 2026 at 2:00 am local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.Daylight Saving Time Ends
Sunday, November 1, 2026 at 2:00 am local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.Ottawa Facts
Country
Canada
Alternative Names
Atava, Otava, Otavo, Otawa, Ottaba, Ottahua, Ottava, Ottavae, Ottawa, YOW, atawa, atoya, attava, awtawa, otava, otawa, ottava, wo tai hua, xxttawa, AA¬²±, Οττάβα, Οτταβα, Атава, Отава, Оттавæ, Оттава, Օտտավա, אוטווה, אטאווא, أوتاوا, ئۆتاوا, اتاوا, اوتآوآ, اوٹاوا, اٹاوہ, ओटावा, অটোয়া, ਓਟਾਵਾ, ଓଟାୱା, ஒட்டாவா, ಆಟ್ಟಾವಾ, ഓട്ടവ, ออตตาวา, ཨོ་ཏ་ཝ།, အော့တဝမြို့, ოტავა, ኦታዋ, ᎠᏔᏩ, ᐊᑐᕚ/atavaa, オタワ, 渥太華, 오타와
Population
812,129
Currency
Dollar (CAD)
Geographic Coordinates
45° 24' N Latitude / 75° 41' W Longitude
International Dialing Code
+1
Tehran Information
Time Zone
Abbreviation / Name
IRST - Iran Standard Time
UTC / GMT Offset
+3:30 hours during Iran Standard Time, currently in use.
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