Explanation:

Shaheed Diwas or Martyrs' Day is celebrated every year on January 30 and March 23 to pay homage to the victims who fought for the freedom, glory, welfare and progress of India. On January 30, 1948, the Father of Nation, Mahatma Gandhi was assassinated at Gandhi Smriti in the Birla House during the evening prayers. So, the Government of India announced the day as Shaheed Diwas or Martyr's Day. In some parts of India March 23 is also celebrated as Martyr's Day because on this day three heroes of the nation were hanged to death by the British namely Bhagat Singh, Shivaram Rajguru and Sukhdev Thapar