how to disable past time in bootstrap timepicker using jquery

Question

$('.time_popup').timepicker({
                    autoclose: true,
                    showMeridian: false,
                    maxHours: 24,
                    // pickerPosition: "bottom-left",
                    minuteStep: 5,
                    minDate: moment(),
                    defaultTime: 'current'
                });


this is my jquery code for displaying time picker.

How can i disable current dates current time and past time