Calendar app confused about date format.
I recently received an email from a European carrier that contained the date 06.07.2023, i.e., the sixth of July, 2023, and generally understood everywhere except the USA. However, even though my Language & Region settings are for dd/mm/yyyy format, this event was automatically entered in my Calendar as the 7th of June. It's seems not smart enough to recognize that replacing slashes with dots does not make the date format revert to the American default.
iMac 21.5″, macOS 12.6