core/homeassistant/components/time_date/strings.json

{
  "issues": {
    "deprecated_beat": {
      "title": "The `{config_key}` Time & Date sensor is being removed",
      "description": "Please remove the `{config_key}` key from the `{display_options}` for the {integration} entry in your configuration.yaml file and restart Home Assistant to fix this issue."
    }
  }
}