Array that specifies the time headers rows: levels, groups, and date format.
DayPilot.Scheduler.timeHeaders (array)
Item properties:
Possible values of groupBy property:
Possible values of format property:
[ {"groupBy": "Default"}, {"groupBy": "Cell"} ];
dp.timeHeaders = [ { groupBy: "Month", format: "MMMM yyyy" }, { groupBy: "Day", format: "d"} ];