can't ad birth date

Question

I've changed the birth date for Jans-3124 but it doesn't show on the profile page. I don't understand what goes wrong here

Comments

Thank you very much. Apparently I need to stop, getting tired.

Answer 1

You are trying to add September 31; September only has 30 days.

Answer 2

September has 30 days not 31 days. Therefore Wikitree won't save an invalid date.

Check the actual pages to see how the date was recorded instead of relying on the transcribed date which may have been recorded wrongly.