The country is set to observe one-minute blackout commemorating the black night of March 25 in 1971.
Pakistani occupation forces carried out brutalities and cowardly attacks on the unarmed people in the country on this black night in 1971.
People will observe the programme spontaneously by switching their light off at 9pm.
However, the government will not suspend power supply.
The establishments of emergency services will be kept out of the purview of the programme.
Additional security measures have been taken on the occasion.
According to UNB, the nation is observing the 'Genocide Day' in a sombre mood on Sunday.
The day is being observed officially for the second time in the country as Parliament unanimously adopted a resolution on March 11, 2017 to observe March 25 as the Genocide Day.
On the black night of March 25 in 1971, the Pakistani military junta resorted to mass killing in Dhaka to implement their blueprint to thwart the Awami League's assumption of office following the election mandate of 1970.
In the attack dubbed 'Operation Searchlight', the Pakistani forces mercilessly killed the Bangalee members of the East Pakistan Rifles and police, students, teachers and common people.
They killed people indiscriminately, set fire to houses and property, and looted business establishments, leaving a trail of destruction.