FAQ

Is it possible to retain the date and time if turn the AC plug off and on?

Unfortunately, this is not possible because BRAVIA does not have a clock battery.

This is a hardware specification.
However, there is a way to set the NTP server.
Please refer to the following page:
https://pro-bravia.sony.net/guides/references/prosettings/android_latest/2_settings/2-5_ntp_server/