中午十二点到下午六点
00:00 ~ 11:59 = morning (morning = 起床到午餐前+00:00~12:00)12:00 = noon12:01 ~ 18:00 = afternoon (afternoon = 12:00~18:00)18:00 ~ 23:59 = evening (evening = 18:00~点到睡觉前)24:00 = midnight