If you have thousands of Unix epoch times (which is what you sure appear to have -- the number of seconds since midnight January 1st 1970 UTC) then why do you think you can process them all without... well, processing them all? The loop over thousands will be simpler and take less time that you think. 

while ( <> ) {
  chomp;
  print (gmtime $_);
}

[download]

See localtime and gmtime, although there's nothing wrong with ctime().

In reply to Re: changing date format in and out by mr_mischief
in thread changing date format in and out by gio001

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