You can display active areas for time cells.

ASP.NET WebForms

Not supported yet.

ASP.NET MVC

Not supported yet.

JavaScript

var cellMenu = new DayPilot.Menu({
        cssClassPrefix: "menu_default",
        items: [
        {text:"Show cell details", onclick: function() {alert("Cell: " + this.source.start);} },
    ]});

dp.onBeforeCellRender = function(args) {
  args.cell.areas = [ {"action":"ContextMenu","height":17,"w":17,"v":"Hover","menu":"cellMenu","css":"event_action_menu","top":3,"right":2} ];
};