Hello, I doubt to have understood what a difference from 3 dates can be..

I just guess you want the maximum difference in a set; if so you can sort by epoch and take first and last one: 

use strict;
use warnings;
use Date::Calc qw(:all);


my @array1 = (2018,04,11,0,0,0);
my @array2 = (2018,04,12,0,0,0);
my @array3 = (2018,04,13,0,0,0);

my @ordered = sort { Mktime(@{$a})<=> Mktime(@{$b})} \@array1,\@array2
+,\@array3;

print "@$_\n" for @ordered;

my $dd = Delta_Days(@{@ordered[0]}[0..2],@{@ordered[-1]}[0..2]);

print "Max delta is $dd day(s)\n";

#OUTPUT
2018 4 11 0 0 0
2018 4 12 0 0 0
2018 4 13 0 0 0
Max delta is 2 day(s)

[download]

If not, please explain your question more verbosely

L*

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

In reply to Re: Calculate difference between multiple days by Discipulus
in thread Calculate difference between multiple days by Anonymous Monk

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