Instrument meteorological conditions. Instrument meteorological conditions (IMC) is an aviation flight category that describes weather conditions that require pilots to fly primarily by reference to instruments, and therefore under instrument flight rules (IFR), rather than by outside visual references under visual flight rules (VFR).
2. âO Canadaâ only became the official Canadian national anthem in 1980. The official anthem before that was âGod Save the Queenâ, since they were a British colony. (National Anthems) 3. Sally Field played Tom Hanksâ mother in âForrest Gumpâ just six years after she played his love interest in âPunchlineâ.
The Declaration became official when Congress voted for it on July 4; signatures of the delegates were not needed to make it official. The handwritten copy of the Declaration of Independence that was signed by Congress is dated July 4, 1776. The signatures of fifty-six delegates are affixed; however, the exact date each person signed it has long been the subject of debate.