Here is one way:

#! perl
use strict;
use warnings;
use Date::Calc qw(Days_in_Month Today);

print 'The last day of last month was ', last_day_last_month(), "\n";

sub last_day_last_month
{
    my ($year, $month, $day) = Today([time]);

    if (--$month == 0)
    {
        $month = 12;
        --$year;
    }

    return sprintf("%02d/%d/%d", $month,
                                 Days_in_Month($year, $month),
                                 $year);
}

[download]

Hope that helps,

Athanasius <°(((>< contra mundum

In reply to Re: How to find the last date of the previous month? by Athanasius
in thread How to find the last date of the previous month? by MrSnrub

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