How many days was world war 2?
The war began — and ended — on different dates for different countries. For Europeans, it began in September 1939. For Americans, it began in December 1941. Someone in Manchuria would give you a different date. Also, sometimes there is a difference between when hostilities ended and when the state of war ended. The US was heavily involved in the war both on the Pacific and European fronts. Most other countries were substantially involved in one theater, but not the other, even though they may have had a state of war in that other theater. That’s a long way of saying there’s no easy answer to your question, certainly not with the level of precision you’re asking for such a vague question. If you ask something like “How many days was the US at war with Italy in WW2”, then you can get an exact answer.
