You're using Time::localtime somewhere, and that is turning the results of localtime into an object.

Also note it is redundant to pass time as a parameter to localtime.

use Time::localtime;
 
print "Object: ", join(' ', localtime), "\n";
print "Array: ", join(' ', CORE::localtime), "\n";
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By the way, to determine this all you needed to do was google Time::tm. The results promisingly return perldoc Time::tm which documents that it is a base class of Time::localtime and Time::gmtime.