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diff --git a/019/ch1.pl b/019/ch1.pl
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+#!/usr/bin/env perl
+#
+# Write a script to display months from the year 1900 to 2019 where you find 5
+# weekends i.e. 5 Friday, 5 Saturday and 5 Sunday.
+################################################################################
+
+use strict;
+use warnings;
+
+use DateTime;
+
+my @months;
+for my $year (1900 .. 2019) {
+    for my $month (1 .. 12) {
+        my $date = DateTime->last_day_of_month(year => $year, month => $month);
+        my $day = $date->day;
+        my $dow = $date->day_of_week();
+        push @months, $date->strftime("%m/%Y")
+            if $day == 30 && $dow == 7 || $day == 31 && ($dow == 7 || $dow == 1);
+    }
+}
+
+print "Months with 5 weekends: @months\n"