The second last minor Palindrome date is on a Sunday, 12 September 2021! So the only way to get a minor Palindrome date is to go to a shopping centre post office and register a mail to yourself. It is only for a small round cancellation. In addition, it really depends on whether the post office is open in your location at this time.
The last one for the year is on 12.11.21.
Good luck!
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