The Election Commission has fixed the Brahmanbaria-1 and Gaibandha-1 parliamentary by polls for Mar 13 and announced the full schedule.
Candidates have until Feb 14 to submit their nomination forms to the returning officers.
The forms will be scrutinised on Feb 16 and candidates will have until Feb 23 to withdraw.
Chief Election Commissioner KM Nurul Huda had previously stated the Nasirnagar (Brahmanbaria-1) and Sundarganj (Gaibandha-1) by-polls would be held on Mar 13.
The two seats were vacated following the deaths of Fisheries and Livestock Minister and Brahmanbaria-1 MP Sayedul Hoque and Gaibandha-1 MP Golam Mostafa.
Hoque, who was elected to the seat five times as a member of the Awami League, died on Dec 16, according to bdnews24.
Golam Mostafa died on Dec 19 from his injuries he suffered in a road accident a month earlier. The seat had previously been vacated after the murder of Manjurul Islam Liton on Mar 22, 2017.