In fact, it is almost noon in Moscow, and nobody has yet written that today is the day of the tester, by the way)
On September 9, 1945, the first bug in history was officially registered. It was on this day that scientists from Harvard University, who tested the computing machine Mark II Aiken Relay Calculator, found a moth that was stuck between the contacts of the electromechanical relay. The extracted insect was glued into the diary, with the accompanying inscription: "First actual case of bug being found".
All involved with a celebration!