easter_days

This function returns an array of timestamp corresponding to Dutch National holidays. Liberation Day (Bevrijdingsdag) is added as a National holiday once every five years (2000, 2005, 2010, ...).<?phpfunction getHolidays($year = null) {    if ($year === null) {        $year = intval(date('Y'));    }        $easterDate  = easter_date($year);    $easterDay   = date('j', $easterDate);    $easterMonth = date('n', $easterDate);    $easterYear   = date('Y', $easterDate);      $holidays = array(        // Nieuwjaarsdag        mktime(0, 0, 0, 1,  1,  $year),          // 1e Kerstdag        mktime(0, 0, 0, 12, 25, $year),          // 2e Kerstdag        mktime(0, 0, 0, 12, 26, $year)    );          // Bevrijdingsdag    if (($year % 5) == 0) {        $holidays[] = mktime(0, 0, 0, 5, 5, $year);      }        // Koninginnedag (< 2014) of Koningsdag (>= 2014).     // Verplaats naar zaterdag als het valt op zondag.    if ($year <= 2013) { // Koninginnedag <= 2013        if (date('w', mktime(0, 0, 0, 4, 30, $year)) == 0) { // Op zondag?            $holidays[] = mktime(0, 0, 0, 4, 29, $year);  // Verplaats naar zaterdag        } else {            $holidays[] = mktime(0, 0, 0, 4, 30, $year);  // Koninginnedag        }    } else { // Koningsdag > 2014        if (date('w', mktime(0, 0, 0, 4, 27, $year)) == 0) { // Op zondag?            $holidays[] = mktime(0, 0, 0, 4, 26, $year);  // Verplaats naar zaterdag        } else {            $holidays[] = mktime(0, 0, 0, 4, 27, $year);  // Koningsdag        }    }        // Onderstaande dagen hebben een datum afhankelijk van Pasen    // Goede Vrijdag (= pasen - 2)    $holidays[] = strtotime('-2 days', mktime(0, 0, 0, $easterMonth, $easterDay,  $easterYear));    // 1e Paasdag    $holidays[] = mktime(0, 0, 0, $easterMonth, $easterDay,  $easterYear);    // 2e Paasdag (= pasen +1)    $holidays[] = strtotime('+1 days', mktime(0, 0, 0, $easterMonth, $easterDay,  $easterYear));    // Hemelvaartsdag (= pasen + 39)    $holidays[] = strtotime('+39 days', mktime(0, 0, 0, $easterMonth, $easterDay,  $easterYear));    // 1e Pinksterdag (= pasen + 49)    $holidays[] = strtotime('+49 days', mktime(0, 0, 0, $easterMonth, $easterDay,  $easterYear));    // 2e Pinksterdag (= pasen + 50)    $holidays[] = strtotime('+50 days', mktime(0, 0, 0, $easterMonth, $easterDay,  $easterYear));    sort($holidays);      return $holidays;}$holidays = getHolidays(2014);foreach ($holidays as $holiday) {    echo date('d-M-Y', $holiday) . '<br>';}?>

Also, be aware that the eastern orthodox churches sometimes have different dates for easter. See, for example <http://webexhibits.org/calendars/calendar-christian-easter.html>. And note that the dates of easter a subject to change,  for example, the churches might some day decide to unify the dates.