The Supreme Court earlier also relaxed the mandatory wearing of coat and gown in the lower courts
The decision was taken on Monday at the Cabinet meeting presided over by Prime Minister Sheikh Hasina, Cabinet Secretary Mohammad Shafiul Alam told a press briefing.
He said that new timings will be effective for all government, semi-government, autonomous and semi-autonomous offices during the Ramadan, which is starting by the end of first week of June.
There will be a 15-minute break from 1:15pm for the Zuhr prayers during office time, he added.
But the Supreme Court, banks and other financial institutions will be free to decide their own working hours.