After the discovery of electricity and lightbulb, night markets were held more frequently in colonial Dutch East Indies in early 20th century. The most notable one is Pasar Gambir, a night market fair held in 1906 and yearly from 1921 until the outbreak of World War II in 1942, in the Koningsplein, Batavia, Dutch East Indies (now Merdeka Square, Jakarta, Indonesia) to celebrate the birthday of Queen Wilhelmina of the Netherlands. It has become the predecessor of the annual Jakarta Fair and Den Haag's Tong Tong Fair which are actually a night market and festival held for several weeks.