Many thanks to a regular reader EN for the reminder. I almost missed this. Tomorrow is another minor palindrome date. The date 61216, if read from front to back and vice versa will be the same. Just thought you might want to keep the date.
Just remember, it only works with the smaller postmarks with the abridged date format. It will not be palindrome on 06.12.2016 (thus it is just a minor palindrome date)!