The decision was taken at the National Moon Sighting Committee meeting in the evening.
Ministry of Religious Affairs Secretary Md Nurul Islam presided over the meeting.
Also read: Holy Shab-e-Barat observed
The announcement was made after analysing data collected from the district administrations, Islamic Foundation, Bangladesh Meteorological Department, and Space Research and Remote Sensing Institute.
Shab-e-Barat is observed on the 15th night of the Arabic month of Shaban. Muslims offer special prayers, recite the Quran, and take part in other religious rituals.