Also known as Indochina Time (ICT) and Western Indonesian Time (Indonesian: Waktu Indonesia Barat, WIB) (in Indonesia), it is used in: Principal cities: Krasnoyarsk, Novosibirsk, Khovd, Hanoi, Da Nang, Ho Chi Minh City, Phnom Penh, Vientiane, Bangkok, Medan, Palembang, Jakarta, Bandung, Semarang, Yogyakarta, Surabaya, Pontianak, Flying Fish Cove.Since legal, political, and economic in addition to physical or geographical criteria are used in the drawing of time zones, it follows that official time zones do not precisely adhere to meridian lines.Using UTC+06:30: Using UTC+08:00: Using UTC+09:00: The Republic of China's offset for this time zone was Kansu-Szechwan, and was used until 1949, when the Chinese Communist Party took control of Mainland China following the Chinese Civil War and made UTC+08:00 the standard time for all areas under its control.Formerly, from 1918 to 1949, this time offset was used in eastern Xikang and Qinghai, central Outer Mongolia (1921–1924), and all of Yunnan, Guangxi, Guizhou, Ningxia, Suiyuan, Gansu, Sichuan, and Shaanxi.This time zone was also the standard used in Malaysia and Singapore from 1 June 1905 to 31 December 1932.