In the monthly overview of the calendar, only the days as well as the current month are displayed, and the LG smartphone's calendar settings allow us to also display the calendar weeks (KW).

Android 9 | LG UX 9.0
Step 1:  Open the  Calendar -App
Step 2:  Open the  Menu
Step 3:  Open the  Settings
Step 4:  Tap on  Calendar
Step 5:  Enable or Disable  Show week number
  1. Open the Calendar-App
  2. Open the Menu
  3. Open the Settings
  4. Tap on Calendar
  5. Enable or Disable Show week number

LG Instructions