What Happened on April 13, 1941

Day of the Week: Sunday

Historical Events

  • Heavy German assault on Tobruk
  • Pact of neutrality between the USSR and Japan is signed.

Famous Birthdays

  • Michael Stuart Brown, American geneticist, Nobel laureate

Famous Deaths

Person of interestPerson of Interest

Annie Jump Cannon, US astronomer (Henry Draper catalogues), dies at 77

Astronomer Annie Jump Cannon
Annie Jump Cannon