What was the first day of the biltz called?

The first day of the Blitz, a sustained bombing campaign by the German Luftwaffe against the United Kingdom during World War II, is commonly referred to as "Black Saturday." This day occurred on September 7, 1940, when London was first targeted with extensive aerial bombardments, marking the beginning of a prolonged period of intense attacks that lasted until May 1941. The Blitz aimed to weaken British morale and disrupt the war effort.