On the day, the national flag will remain at half mast atop all government, semi-government and autonomous organisations and educational institutions, all government and private buildings and Bangladesh missions abroad, it said.
Special prayers will be held at all mosques and other religious institutes on the day seeking eternal peace of the departed souls of those who died in a recent helicopter crash in mountainous terrain of East Azerbaijan province of Iran, reports BSS.
Iranian President Ebrahim Raisi and its Foreign Minister Hossein Amirabdollahian were killed in the helicopter crash.