Convert Bangladesh Time to Iran Time
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BST · UTC+6 → IRST · UTC+3:30
BST is 2 hours 30 minutes ahead of IRST
Dhaka · UTC+6
Wednesday, 7 October 2026
Tehran · UTC+3:30
Wednesday, 7 October 2026
When are both sides at work?Each column is one hour of the day in the first city; the second row shows the same moment in the other city. Gold means office hours (09:00–18:00), dusk means awake but off work, night means asleep (23:00–07:00). Columns where both rows are gold are good meeting times.
Shared working hours: 11:30–18:00 in Dhaka is 09:00–15:30 in Tehran.
Working (09–18) Awake, off the clock Asleep (23–07)
Pick a time and share it
17:25 Wed 7 Oct Dhaka = 14:55 Wed 7 Oct Tehran
Hour-by-hour conversion
| Dhaka (BST)Every hour of today in the first city, with the matching time in the second. “Next day” means the calendar date is already tomorrow there. The highlighted row is right now. | Tehran (IRST) | |
|---|---|---|
| 00:00 | 21:30prev. day | |
| 01:00 | 22:30prev. day | |
| 02:00 | 23:30prev. day | |
| 03:00 | 00:30 | |
| 04:00 | 01:30 | |
| 05:00 | 02:30 | |
| 06:00 | 03:30 | |
| 07:00 | 04:30 | |
| 08:00 | 05:30 | |
| 09:00 | 06:30 | |
| 10:00 | 07:30 | |
| 11:00 | 08:30 | |
| 12:00 | 09:30 | Both at work |
| 13:00 | 10:30 | Both at work |
| 14:00 | 11:30 | Both at work |
| 15:00 | 12:30 | Both at work |
| 16:00 | 13:30 | Both at work |
| 17:00 | 14:30 | Now |
| 18:00 | 15:30 | |
| 19:00 | 16:30 | |
| 20:00 | 17:30 | |
| 21:00 | 18:30 | |
| 22:00 | 19:30 | |
| 23:00 | 20:30 |
About this conversion
BST here means Bangladesh Time, represented by Dhaka (Asia/Dhaka), currently UTC+6. IRST means Iran Time, represented by Tehran (Asia/Tehran), currently UTC+3:30.
BST is used by 2 zones, including Bangladesh. If you meant a different one, see every meaning of BST.
Working hours are shown as 09:00–18:00 local, and sleeping hours as 23:00–07:00. The hour table is anchored on the current day in Dhaka; day boundaries are marked where the date differs.
Quick answers
- 09:00 BST is 06:30 IRST
- 12:00 BST is 09:30 IRST
- 15:00 BST is 12:30 IRST
- 18:00 BST is 15:30 IRST
Related conversions
- Bangladesh Time to India TimeBST → IST
- Bangladesh Time to Kyrgyzstan TimeBST → KGT
- Bangladesh Time to Myanmar TimeBST → MMT
- Bangladesh Time to Sakhalin TimeBST → SAKT
- Bhutan Time to Iran TimeBTT → IRST
- Central Africa Time to Iran TimeCAT → IRST
- Colombia Time to Iran TimeCOT → IRST
- Hawaii-Aleutian Time to Iran TimeHAST → IRST
- Iran Time to India TimeIRST → IST
- Bangladesh Time to Eastern TimeBST → EST
- Time in Dhakanow, DST, offset
- Time in Tehrannow, DST, offset