CBPCalc :: isWorkTime: Bitrix method

      
<?php 
//  CBPCalc :: isWorkTime()
//  /dist/bitrix/modules/bizproc/classes/general/calc.php:920

    private function isWorkTime($date)
    {
        $dayTs = $this->getWorkDayTimestamp($date);
        list ($startSeconds, $endSeconds) = $this->getCalendarWorkTime();
        return ($dayTs >= $startSeconds && $dayTs <= $endSeconds);
    }