Created attachment 179023 [details] Demonstrates the standard date formatting bug Using the standard date format, in spreadsheet, NNNND MMMM YYYY produces an incorrect formatted date. i.e.Thursday 1 June 20220 This has a spurious trailing zero.
Created attachment 179025 [details] Screen shot of the format window which reflects the issue.
But your B1 contains literal "20220-04-01"?
User error - cell contained a valid date with the addition character.