Raman was born on March 5, 1970. Prakhar was born 25 days before Raman. The year when they took birth, the Republic Day fell on Monday.

Can you find out on what day was Prakhar born?

Prakhar was born on Sunday.

Prakhar was born 25 days before Raman and thus the birth date of Prakhar will be 8 Feb 1970.
Republic Day was on Monday.
Number of days from 26 January till 8 February = 13

After 13 days of Monday, it will be Sunday.