# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Zion 2013 max - Mar Fri>=23 2:00 1:00 D Rule Zion 2013 max - Oct lastSun 2:00 0 S Rule EU 1981 max - Mar lastSun 1:00u 1:00 S Rule EU 1996 max - Oct lastSun 1:00u 0 - Japan Standard Time or JST (Nihon Hyōjunji or Chūō Hyōjunji) is the standard timezone in Japan, and is 9 hours ahead of UTC, i.e. it is UTC+09:00. There is no daylight saving time, though its introduction has been debated several times. During World War II, it was often called Tokyo Standard Time.