The short answer

1am in Bangladesh Standard Time is 10:30pm in Tehran on the previous day.

Bangladesh Standard Time is 2 hours 30 minutes ahead of Tehran. It lands deep outside working hours in Tehran — see the best time to meet below for a friendlier slot.

Bangladesh Standard Time
1am
Tehran
10:30pm
previous day
Right now
2:35pm+06:00 · UTC+06:00 · Mon, Jun 22
12:05pm+03:30 · UTC+03:30 · Mon, Jun 22
Read across to convert
Bangladesh Standard Time
+06:00 · UTC+06:00
2:35pm ☀
Tehran
+03:30 · UTC+03:30
12:05pm ☀
Pinned1amBangladesh Standard Time=10:30pmTehran · Sun (previous day)
12amMon
9:30pmSun ·−1d
PINNED
1am
10:30pmSun ·−1d
2am
11:30pmSun ·−1d
3am
12:30amMon
4am
1:30am
5am
2:30am
6am
3:30am
7am
4:30am
8am
5:30am
9am
WORK
6:30am
10am
WORK
7:30am
11am
WORK
8:30am
12pm
WORK
9:30am
WORK
1pm
WORK
10:30am
WORK
NOW
2pm
WORK
11:30am
WORK
3pm
WORK
12:30pm
WORK
4pm
WORK
1:30pm
WORK
5pm
2:30pm
WORK
6pm
3:30pm
WORK
7pm
4:30pm
WORK
8pm
5:30pm
9pm
6:30pm
10pm
7:30pm
11pm
8:30pm
daylightnightworking hoursoverlap
Best time to meet
Best for a call
Bangladesh Standard Time
12pm–5pm
=
Tehran
9:30am–2:30pm
Popular conversions

Quick reference.

9amBangladesh Standard Time=6:30amTehran
12pmBangladesh Standard Time=9:30amTehran
3pmBangladesh Standard Time=12:30pmTehran
5pmBangladesh Standard Time=2:30pmTehran
9pmBangladesh Standard Time=6:30pmTehran
In context

What each side covers.

Bangladesh Standard Time
+06:00 · UTC+06:00
2:35pm
Cities on this clock
Tehran
+03:30 · UTC+03:30
12:05pm
Cities on this clock

Frequently asked

Quick answers about converting between Bangladesh Standard Time and Tehran. Can't find what you need? Email [email protected].

What is the time difference between Bangladesh Standard Time and Tehran?
Bangladesh Standard Time is 2 hours 30 minutes ahead of Tehran right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
When it's 1am in Bangladesh Standard Time, what time is it in Tehran?
1am in Bangladesh Standard Time is 10:30pm in Tehran on the previous day. It lands deep outside working hours in Tehran — see the best time to meet below for a friendlier slot. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Bangladesh Standard Time and Tehran?
12pm–5pm in Bangladesh Standard Time lines up with 9:30am–2:30pm in Tehran — both sides are inside a 9-to-5 working day.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — +06:00 and +03:30 — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
Why is the date sometimes different on each side?
When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.