Problem Statement

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.

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.

Let's start with the solution:

task=: {{
  r=. ''
  days=. todayno 2020 02 02
  while. 15 > #r do.
    days=. ({:days)+1+i.1e4
    r=. r, days#~(-:|.)"1":,.1 todate days
  end.
  15 10{.isotimestamp todate r
}}


   task''
2021-12-02
2030-03-02
2040-04-02
2050-05-02
2060-06-02
2070-07-02
2080-08-02
2090-09-02
2101-10-12
2110-01-12
2111-11-12
2120-02-12
2121-12-12
2130-03-12
2140-04-12