23:59:58 23:59:59 00:00:01 00:00:02 00:00:00 (STA_INS, TIME_INS) (STA_INS, TIME_INS) 23:59:60 (STA_INS, TIME_OOP) (STA_INS, TIME_WAIT) (STA_INS, TIME_WAIT) (STA_INS, TIME_OK) (0, TIME_OK) (0, TIME_WAIT) (0, TIME_OK) ntp_next_leap_sec adjtimex(2) adjtimex(2) 160