The day was celebrated as the National Children's Day. It was also a public holiday.
On this day in 1920, the nation's architect was born in Tungipara of Gopalganj.
President Abdul Hamid and Prime Minister Sheikh Hasina paid their homage to Bangabandhu by placing wreaths at his mazar (mausoleum) in Tungipara.
President Abdul Hamid first laid a wreath at the mazar of Bangabandhu followed by Prime Minister Sheikh Hasina.
After placing the wreaths, they stood in solemn silence for some time as a mark of profound respect to the memory of the Father of the Nation as the bugle played the last post.
A smartly turned out contingent drawn from the Bangladesh Army, Navy and Air Force gave a guard of honour on the occasion.
Abdul Hamid and Sheikh Hasina offered fateha and joined a munajat seeking eternal peace of the departed soul of Bangabandhu as well as other martyrs of the August 15 carnage.
Later, the President signed the visitor's book kept on the mazar premises.
Flanked by senior leaders of the party, Sheikh Hasina, also the Awami League president, placed another wreath at the mazar of Bangabandhu on behalf of AL.
Search engine giant Google created a Doodle to celebrate the National Children's Day and the birth anniversary of Father of the Nation Bangabandhu Sheikh Mujibur Rahman.
Through his dynamic leadership, Bangabandhu had organised the Bangalee nation to fight against exploitation and repression by the Pakistani rulers. The movement culminated in independent Bangladesh through the nine-month Liberation War in 1971.
On August 15, 1975, the great leader along with most of his family members was assassinated by a disgruntled group of army men.
Different sociopolitical organisations, including Awami League and its associated bodies, observed the day amid various programmes.
A Qurankhani and a milad mahfil was held at Baitul Mukarram National Mosque.
The ruling party will organise a discussion at Bangabandhu International Conference Centre at 3pm on Monday where Prime Minister and AL President Sheikh Hasina will speak.