A timestamp format like “DDD MMM DD HH:MM:SS YYYY” should be regarded either a bad joke or a criminal offense. Who wrote that monstrous “program”? Did he manage to get that program doing anything in a reasonable way?
And now we get that question giving exactly one example, and this eaxmple is based on exactly the one month for which the month-formats MMM and MMMM don’t make a difference.
Can I believe that at least a format was chosen resulting in a constant length of all the stamps?
Suppose the import format is actually described by DDD MMM DD HH:MM:SS YYYY
and an imported DTS is placed in cell A2 you will get a date-time-stamp in the numeric representation used by spreadsheets by the simple formula:
=DATE(VALUE(MID(A2;21;4));(FIND(MID(A2;5;3);"JanFebMarAprMayJunJulAugSepOctNovDec")+2)/3;VALUE(MID(A2;9;2)))+TIME(VALUE(MID(A2;12;2));VALUE(MID(A2;15;2));VALUE(MID(A2;18;2)))
You should format the result by YYYY-MM-DD HH:MM:SS
to get an unambiguos display.