Bangladesh Standard Time (Bengali: বাংলাদেশ মান সময়) (BST) is the time zone of Bangladesh which is observed throughout the whole country, with a time offset of UTC+6:00. Bangladesh does not observe any Daylight saving time. Bangladesh Standard Time is calculated on the basis of 90.00° E longitude, which passes over the Harukandi Union of Harirampur Upazila of Manikganj District of Dhaka Division, Bangladesh. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Bengali or Bangla (বাà¦à¦²à¦¾, IPA: ) is an Indo-Aryan language of the eastern Indian subcontinent, evolved from Prakrit, PÄli and Sanskrit. ... A time zone is a region of the Earth that has adopted the same standard time, usually referred to as the local time. ... Daylight saving time around the world DST used DST no longer used DST never used Daylight saving time (DST), also summer time in British English, is the convention of advancing clocks so that afternoons have more daylight and mornings have less. ... Harirampur (Bengali: ) is an Upazila of Manikganj District in the Division of Dhaka, Bangladesh. ... Manikganj is a district in central Bangladesh. ... Dhaka Division is an administrative division within Bangladesh. ...