After the excitement of Twosday palindrome and ambigram date on 22.2.22, today we encounter a minor palindrome in the form of 22.3.22. This can only be found on the small date stamps.
Good luck in sending a mail to yourself!
Here are the other palindrome dates for the rest of the year:
22.5.22 (also minor ambigram)
22.8.22 (also minor ambigram)
22.11.22 (also minor ambigram)
As there are post offices that open 7 days a week and with a combination of different states, should be able to get most of them this year!