Hi, friend!
First, you need to log in to the WebUI of the EG8145V5.
Click Advanced > Application tab, and choose Time Setting in the navigation tree on the left. In the pane on the right, set the parameters related to the system time, including the SNTP server, time zone, and daylight saving time (DST).

Click Apply.
Note:
An administrator account may be required to set the device time. If an administrator account is required, contact the device provider.
Thanks!