Jiazi (甲子) cycle's Kongwang (空亡) is in Xu (戌) and Hai (亥).

Cycle							Kongwang (空亡)
Jiazi (甲子) cycle	Jiazi (甲子)	Yichou (乙丑)	Bingyin (丙寅)	Dingmao (丁卯)	Wuchen (戊辰)	Jisi (己巳)	Xu (戌) Hai (亥)