Bhagat Singh, Rajguru and Sukhdev were hanged to death at 7.30 pm on March 23, 1931 in Lahore Jail. Bhagat Singh was 23 years old.
source https://www.jagranjosh.com/current-affairs/shaheed-bhagat-singh-death-anniversary-2022-date-history-significance-quotes-1647979883-1