Usually In summar 6.00-10.00 pm is the best trading time, time time both USA and UK, European session overlap. This is best trading time for bangladeshi.
In winter 7.00-11.00PM.
But remember Market moves greatly(2/3 rd movement) 6-8 pm and last 9-10.30 pm rest (1/3 rd movement) in first few hours and
1.00pm to 3.00 PM European and UK session overlaps. kintu ko move korbe.
happy trading hours
with thanks