Linux system time and time zone synchronized with Internet time

The problem so figure red Area

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#/usr/sbin/ntpdate time.nist.gov//manual sync time, found with network time or not wrong

# Vi/etc/sysconfig/clock//Discovery is new_york,zone= "America/new_york"

# Cp/usr/share/zoneinfo/asia/shanghai/etc/localtime//Modify time zone
# Vi/etc/sysconfig/clock //modified to China's East eight district
zone= "Asia/shanghai"
Utc=false
Arc=false

Reference online

2 "./etc/ LocalTime This file is used to set the time zone of the system, copy the corresponding file from  /usr/share/zoneinfo/  to/etc and rename it to  localtime  to modify the time zone setting. And this modification is effective in time for the  date  order. Both  date  and  hwclock  use this file, which translates between UTC and local based on the time zone setting of the file.  
 

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When you start the computer automatically when the network:
Vi/etc/rc.d/rc.local
/usr/sbin/ntpdate time.nist.gov; /sbin/hwclock-w

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Linux system time and time zone synchronized with Internet time