republic day
March 4, 1774 - First sighting of Orion Nebula by William Herschel.

MArch 4, 1789 - In New York City, the first United States Congress meets, putting the Constitution of the United States into effect.

March 5, 1968 - U.S. launches Solar Explorer B, aka Explorer 37 from Wallops Island to study the Sun.

March 5, 1912 - Italian forces are the first to use airships for military purposes, using them for reconnaissance behind Turkish lines.

March 7, 1926 The first successful trans-Atlantic radio-telephone conversation took place, between New York City and London.

March 7, # 1876 - Alexander Graham Bell is granted a patent for an invention he calls the telephone (patent # 174,465).