Why is it invalid to modify the Linux system time using the date command? How can I display it correctly?

Modifying the system time with the date command is invalid because you need to manually modify the system time zone so that the system can be correctly displayed.

You must manually modify the system time zone to display the correct time.

1.Find the corresponding time zone file/Usr/share/zoneinfo/Asia/Shanghai replace the current file with this file

/Etc/localtime
# Cp/usr/share/zoneinfo/Asia/Shanghai/etc/localtime

2.Modify the/etc/sysconfig/clock file, Changed:

ZONE = "Asia/Shanghai"

UTC = true

ARC = false

3.Generally, you only need to perform these two steps, or execute the following command to correct the time.

/Usr/sbin/ntpdate-u 0.asia.pool.ntp.org

4.If the ntp package is not installed, run the following statement first.

Yum install-y ntp *