Get holidays in Japan.
{
"require": {
"holiday-jp/holiday_jp": "*"
}
}require 'vendor/autoload.php';
use HolidayJp\HolidayJp;
$holidays = HolidayJp::between(new DateTime('2010-09-14'), new DateTime('2010-09-21'))
echo $holidays[0]['name'] // 敬老の日