The addMonths method returns a new DayPilot.Date value with the specified number of months added.
DayPilot.Date.addMonths(months)months (number) - number of months to add.
The current value is not changed. The method returns a new DayPilot.Date object.
const start = new DayPilot.Date("2025-03-01T00:00:00");
const result = start.addMonths(2);