The reunification of Jerusalem refers to the June 1967 administrative merger of West Jerusalem and East Jerusalem by Israel, following the conquest of the Eastern half of the city (including the walled Old City) from Jordan during the Six Day War. In 1980, the merger of West and East Jerusalem was legalized in Israel by the Jerusalem Law, though this attempt to change the status of Jerusalem was rejected by the United Nations (UN) and most of the international community. The Reunification is celebrated as an Israeli national holiday, Jerusalem Day; the 50th anniversary was commemorated with celebrations in 2017.