When is St Patrick’s Day celebrated?

• {ts '2022-03-01 00:00:00'}
• {ts '2022-03-17 00:00:00'}
  Explanation:

  "17 March: St Patrick’s Day, Northern Ireland"
• {ts '2022-04-23 00:00:00'}
• {ts '2022-11-30 00:00:00'}