Coordinates: 36°08′27″N 5°21′15″W / 36.140827°N 5.354123°W / 36.140827; -5.354123

Gibraltar National Day, celebrated annually on 10 September, is the official national day of the British overseas territory of Gibraltar. The day commemorates Gibraltar's first sovereignty referendum of 1967, in which Gibraltarian voters were asked whether they wished to either pass under Spanish sovereignty, or remain under British sovereignty, with institutions of self-government.^[1]