Dhaka is in Bangladesh and is currently on UTC+6. Its time zone is Asia/Dhaka.
Dhaka does not observe daylight saving time. It stays on UTC+6 all year, so the difference to any other place that also holds a fixed offset never changes.
The weekend in Dhaka falls on Friday and Saturday. A working day of 9:00 AM to 6:00 PM is the assumption used on the board.
Dhaka shares Asia/Dhaka with 1 other city in the catalogue. They all read the same time and change their clocks together.
See the current time across Bangladesh, including the other cities Meridian tracks there and the time zones they use.