Google Smart Displays and Chromecasts display the dates and location information for Google Photos in Ambient Mode. If this personal information is something you don’t want everyone to be able to see, it can be hidden.
Since September 2020, showing the date, location, and other photo information for the Google Photos backdrop became the default setting. This only applies to devices that use Google Photos in Ambient Mode (the screen saver).
Next, tap the Gear icon at the top right to open the settings menu for that device.
Scroll down and tap “Ambient Mode.”
Under “More Settings,” find “Personal Photo Data,” and then tap “Hide.”
That’s all there is to it! You can repeat these steps for every Google Assistant-powered smart display or Chromecast that displays your Google Photo’s location, date, and time data.