How to check if date time is synced to NTP

To check if date time is being synced run the following command

timedatectl

System clock synchronized: no

Check if chrony daemon is running and able to connect to NTP servers

Check if chrony daemon is running.

systemctl status chronyd

Verify if chrony is synced by checking chrony tracking. If chrony is unable to sync, you should see a lot of 0s in the output.

chronyc tracking

Reference ID : 192.0.2.1 (192.0.2.1) 
Stratum : 12
Ref time (UTC) : Fri Aug 05 19:06:51 2016
System time     : 0.000823375 seconds fast of NTP time
Last offset     : 0.001989304 seconds
RMS offset      : 0.060942811 seconds
Frequency       : 1728.043 ppm slow
Residual freq   : 1.100 ppm
Skew            : 94.293 ppm
Root delay	: 0.000207 seconds 
Root dispersion : 0.016767 seconds
Update interval : 65.1 seconds
Leap status     : Normal

To display current time sources accessed by chrony.

chroncy sources

To display information about drift rate.

chronyc sourcestats