Sometimes after reboot, Linux Date & Time Settings will go haywire for no apparent reason. It will be delayed for several minutes. I do not know, maybe this happens only to my server. For security reason me office blocks access to port 123 \u2013 NTP port.<\/p>\n
Server has 2 types of clocks just like any PCs. First is the System Clock and the other one is the Hardware Clock. Take Hardware Clock as PCs CMOS\u2019s clock and System Clock as Windows Clock.<\/p>\n
Hardware Clock | Runs forever until your server goes kaput.
System Clock | Runs when your system is running<\/p>\n
So, How do you correct Server\u2019s Time & Date setting? This is very important for one of these reasons<\/p>\n
You must be Root to use this command<\/strong><\/p>\n Example No.1 : Set Date and Time to 3 JUL 2011 16:00:00<\/p>\n <\/p>\n Example No.2 : Set Time Only to 16:00:00<\/p>\n <\/p>\n Then run this command<\/p>\n <\/p>\n To sync Hardware Clock with System Clock<\/p>\n","protected":false},"excerpt":{"rendered":" Sometimes after reboot, Linux Date & Time Settings will go haywire for no apparent reason. It will be delayed for several minutes. I do not know, maybe this happens only to my server. For security reason me office blocks access to port 123 \u2013 NTP port.<\/p>\n Server has 2 types of clocks just like any PCs. First is the System Clock and the other one is the Hardware Clock. Take Hardware Clock as PCs CMOS\u2019s clock and System Clock as Windows Clock.<\/p>\n Hardware Clock | Runs forever until your server goes kaput. So, How do you correct Server\u2019s Time & Date setting? This is very important for one of these reasons<\/p>\n You must be Root to use this command<\/strong><\/p>\n Example No.1 : Set Date and Time to 3 JUL 2011 16:00:00<\/p>\n <\/p>\n Example No.2 : Set Time Only to 16:00:00<\/p>\n <\/p>\n Then run this command<\/p>\n <\/p>\n To sync Hardware Clock with System Clock<\/p>\n … <\/p>\n# date -s \"3 JUL 2011 16:00:00\"<\/pre>\n
# date +%T -s \"16:00:00\"<\/pre>\n
# hwclock --systohc<\/pre>\n
System Clock | Runs when your system is running<\/p>\n\n
# date -s \"3 JUL 2011 16:00:00\"<\/pre>\n
# date +%T -s \"16:00:00\"<\/pre>\n
# hwclock --systohc<\/pre>\n