Hello, I would also like to point out the existence of an ** Ambigram ** !! Like last February 22nd ( at least in European DDMMYYYY format ). 22 02 2022 It is a palindrome and at the same time an ambigram. Make the digits "digital" (as on a digital quartz watch -- seven segment display) and turn them upside down >> SAME RESULT. Wait for 12 – 12 – 2121 and it happens again ;-)