When were the first two ‘Supersonic’ airliner services scheduled?

Airliners-Supersonic

The first SUPERSONIC AIRLINERS in scheduled passenger service were a British Airways Concorde flying Heathrow-Bahrain and an Air France Concorde flying Paris-Rio de Janeiro, both of which took off simultaneously at 11.40 a.m. on 21 January 1976. The pilots were Capt. Norman Todd and Capt. Pierre Chanoine respectively.