Dhaka Metropolitan Magistrate Md Mazharul Islam gave the order on Thursday.
On August 31, journalist Gazi Zahirul Islam, former joint secretary of Dhaka Union of Journalists, filed the case with Dhaka Chief Metropolitan Magistrate Court under sections 198 and 469 of the Penal Code.
After recording statement of the complainant, Dhaka Metropolitan Magistrate Muhammad Mazharul Islam summoned the BNP chief to appear before the court on October 17 to give statement about the allegation.
According to the case statement, Khaleda Zia has been intentionally celebrating her fake birthday since August 15, 1996. The celebration of a fake birthday on August 15 was a defamation of Bangabandhu and his family members, who were assassinated on August 15 in 1975, the case statement read.