The visibleEnd() method returns the end of the last visible day (date/time value).
DayPilot.Date object
var dp = new DayPilot.Calendar("dp"); // ... dp.startDate = "2019-01-03"; // Thursday dp.viewType = "Week"; dp.weekStart = 0; // Sunday dp.init(); var end = dp.visibleEnd(); // Sunday, 2019-01-05T00:00:00