How to automatically synchronize the time and date for several logic machines?

[rw_echo]

PC time :
21:29:54, d:+00.0003551s o:+00.0000926s [ * ]
21:29:56, d:+00.0004180s o:+00.0001298s [ * ]

log(res):
* string: ntpd: sending query to 192.168.1.111
ntpd: reply from 192.168.1.111: offset:+446.428452 delay:0.000660 status:0x1c strat:1 refid:0x4c434f4c rootdelay:0.000000 reach:0x01
ntpd: sending query to 192.168.1.111
ntpd: reply from 192.168.1.111: offset:+446.428629 delay:0.000772 status:0x1c strat:1 refid:0x4c434f4c rootdelay:0.000000 reach:0x03
ntpd: sending query to 192.168.1.111
ntpd: reply from 192.168.1.111: offset:+446.428681 delay:0.000722 status:0x1c strat:1 refid:0x4c434f4c rootdelay:0.000000 reach:0x07
ntpd: sending query to 192.168.1.111
ntpd: reply from 192.168.1.111: offset:+446.428711 delay:0.000705 status:0x1c strat:1 refid:0x4c434f4c rootdelay:0.000000 reach:0x0f
ntpd: sending query to 192.168.1.111
ntpd: reply from 192.168.1.111: offset:+446.429952 delay:0.000687 status:0x1c strat:1 refid:0x4c434f4c rootdelay:0.000000 reach:0x1f