Function monthRange

codebase/sources/dhtmlxscheduler.es.js:15824–15827

(year, month)

  return PY_WEEKDAYS[date.getUTCDay()];
};
var monthRange = function(year, month) {
  var date = datetime(year, month + 1, 1);
  return [getWeekday(date), getMonthDays(date)];
};
var combine = function(date, time) {
  time = time || date;
  return new Date(Date.UTC(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate(), time.getHours(), time.getMinutes(), time.getSeconds(), time.getMilliseconds()));