Today   ('''2020-02-02''',   at the time of this writing)   happens to be a palindrome,   without the hyphens,   not only for those countries which express their dates in the   '''yyyy-mm-dd'''   format but,   unusually,   also for countries which use the   '''dd-mm-yyyy'''   format.


;Task
Write a program which calculates and shows the next 15 palindromic dates for those countries which express their dates in the   '''yyyy-mm-dd'''   format.
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