my $configuredDayFromXML = "mon"; #obtain from configuration
my @daysOfWeek = ('Sun', 'Tues', 'Wed', 'Thurs', 'Fri', 'Sat', 'Sun');
if ($configuredDayFromXML eq $daysOfWeek[(localtime)[6]]) {
	if (! check if we are between the start and end time) {
		perform action;
	}
}