when is the air force birthday

The U.S. Air Force’s “birthday” is celebrated every year on September 18.

Quick Scoop: When is the Air Force birthday?

• The official U.S. Air Force birthday is September 18, 1947 , the date the service became its own branch under the National Security Act of 1947.

• Each year, the Air Force birthday is observed on September 18 , not on a floating weekday or weekend.

A tiny bit of story

Before 1947, U.S. military aviation lived under the Army (and the Navy at sea), evolving through names like the Aeronautical Division, Signal Corps and the U.S. Army Air Forces. On September 18, 1947, President Harry Truman signed the National Security Act, which spun the Air Force out as a separate branch, a moment now marked as its birthday.

In other words, when you hear people ask “when is the Air Force birthday,” they’re almost always talking about September 18, the day the service officially took flight as its own branch.

TL;DR: The U.S. Air Force birthday is September 18 every year, marking its founding on September 18, 1947.

Information gathered from public forums or data available on the internet and portrayed here.