HOW TO CHANGE DATE & TIME OF HIKVISION DVR
Configure Time Settings
You can select the time zone and set the time synchronization mode to Manual or NTP mode for the added device.
Enter the Settings page of the device.
On the device list page, if the page is in list mode, swipe the device name to the left and tap .
On the device list page, if the page is in thumbnail mode, tap the device name or tap .
On the Live View page, tap  and then tap Settings.
Note:
For details about how to enter the Live View page, see Start and Stop Live View.
Enter the Remote Configuration page.
For a device added via IP/Domain, tap  Remote Configuration.
Note:
For details about adding devices via IP/Domain, see Add a Device by IP/Domain.
For a device added via other methods, tap Remote Configuration on the Settings page.
Note:
You should have configured DDNS for the device first. See Set DDNS.
Tap Time Configuration to enter the Time Configuration page.
Select the time zone in which the device locates.
The device time will be adjusted automatically.
Select the time synchronization mode.
Select NTP Synchronization. And then set the interval for synchronizing the device time with the NTP server.NTP Synchronization
Synchronize time at a specific interval with the NTP server.
Note:
For details about setting the NTP server details, refer to the user manual of the device.
Select Manual Synchronization. And then tap Synchronize with Phone to synchronize the device time with the OS (Operation System) time of your phone.
Tap  to save the settings.