Offset
The time difference between Bangladesh Standard Time and Australian Central Time is 3.5 hours.
Bangladesh Standard Time (BST) is behind Australian Central Time (ACST).
BST: UTC+6
ACST: UTC+9:30
Neither Bangladesh Standard Time nor Australian Central Time is currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–2 PM in Bangladesh Standard Time (12 PM–5 PM in Australian Central Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 11:00 AM Bangladesh Standard Time (2:30 PM Australian Central Time).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Bangladesh
- International Mother Language DaySat, Feb 21
- Independence and National DayThu, Mar 26
- Bengali New YearTue, Apr 14
- Labour DayFri, May 1
- July Mass Uprising DayWed, Aug 5
- Victory DayWed, Dec 16
- Christmas DayFri, Dec 25
Australia
- New Year's DayThu, Jan 1
- Australia DayMon, Jan 26
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
About these zones
Bangladesh Standard Time is also known as BST. To call Bangladesh, dial +880.
Australian Central Time is also known as ACST, or ACDT. To call Australia, dial +61.
Australian Central Time is approximately 5,150 miles southeast of Bangladesh Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| BST-BANGLADESH | ACST | Day |
|---|---|---|
| 12:00 am | 3:30 am | Same day |
| 1:00 am | 4:30 am | Same day |
| 2:00 am | 5:30 am | Same day |
| 3:00 am | 6:30 am | Same day |
| 4:00 am | 7:30 am | Same day |
| 5:00 am | 8:30 am | Same day |
| 6:00 am | 9:30 am | Same day |
| 7:00 am | 10:30 am | Same day |
| 8:00 am | 11:30 am | Same day |
| 9:00 am | 12:30 pm | Same day |
| 10:00 am | 1:30 pm | Same day |
| 11:00 am | 2:30 pm | Same day |
| 12:00 pm | 3:30 pm | Same day |
| 1:00 pm | 4:30 pm | Same day |
| 2:00 pm | 5:30 pm | Same day |
| 3:00 pm | 6:30 pm | Same day |
| 4:00 pm | 7:30 pm | Same day |
| 5:00 pm | 8:30 pm | Same day |
| 6:00 pm | 9:30 pm | Same day |
| 7:00 pm | 10:30 pm | Same day |
| 8:00 pm | 11:30 pm | Same day |
| 9:00 pm | 12:30 am | +1 day |
| 10:00 pm | 1:30 am | +1 day |
| 11:00 pm | 2:30 am | +1 day |
Daylight saving time
Australian Central Time observes daylight saving time; Bangladesh Standard Time does not. The offset between the two zones changes when Australian Central Time transitions: on Sunday, October 4, 2026, clocks spring forward from ACST to ACDT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:12 AM
- Sunset
- 6:44 PM
- Day length
- 13h 32m
- Sunrise
- 7:18 AM
- Sunset
- 5:12 PM
- Day length
- 9h 55m
Daylight overlap: 8h 31m — 5:12 AM–1:42 PM in Bangladesh Standard Time (8:42 AM–5:12 PM in Australian Central Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Bangladesh Standard Time
Cities in Australian Central Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Bangladesh Standard Time
- DAC
- CGP
- JSR
Airports in Australian Central Time
- ADL
Related conversions
Common conversions
- What is 9:00 am BST-BANGLADESH in ACST?
- 9:00 am BST-BANGLADESH is 12:30 pm ACST.
- What is 12:00 pm BST-BANGLADESH in ACST?
- 12:00 pm BST-BANGLADESH is 3:30 pm ACST.
- What is 12:30 pm BST-BANGLADESH in ACST?
- 12:30 pm BST-BANGLADESH is 4:00 pm ACST.
- What is 2:00 pm BST-BANGLADESH in ACST?
- 2:00 pm BST-BANGLADESH is 5:30 pm ACST.
- What is 5:00 pm BST-BANGLADESH in ACST?
- 5:00 pm BST-BANGLADESH is 8:30 pm ACST.
- What is 11:30 pm BST-BANGLADESH in ACST?
- 11:30 pm BST-BANGLADESH is 3:00 am ACST, the next day.