8103 			if (!this.isWorkTime(task.start_date, undefined, task)) {
8106 			} else if (!this.isWorkTime(new Date(+task.end_date - 1), undefined, task)) {
11827 		isWorkTime: function (date, unit, task) {
11828 			return timeCalculator.isWorkTime(date, unit, task);
15928 				if (!gantt.isWorkTime({date: date, task: task, unit: scaleUnit})) {
25388 					skip = skip && !this.isWorkTime(probe, scale.unit);
25924 				if (!gantt.isWorkTime(task.start_date, undefined, task))
25937 				if (!gantt.isWorkTime(new Date(task.end_date - 1), undefined, task))
28147 	isWorkTime: function () {
28436 	isWorkTime: function () {  method in CalendarDisabledTimeStrategy
28696 	isWorkTime: function (date, unit, task, calendar) {  method in TimeCalculator
28700 		return calendar.isWorkTime(config);