The onBeforeCornerExport event is fired during image export (JPEG, PNG, SVG) and direct printing. It lets you customize the appearance of the upper-left corner of the JavaScript Scheduler.
Available since version 2021.4.5145.
DayPilot.Scheduler.onBeforeCornerExport(args);
dp.onBeforeEventExport = function(args) { args.text = dp.startDate.toString("yyyy"); };