The timepicker addon adds a timepicker to jQuery UI Datepicker, thus the datepicker and slider components (jQueryUI) are required for using any of these. In addition all datepicker options are still available through the timepicker addon.
jQuery TimePicker is a plugin to help users easily input time entries. It works by allowing the user to type times in a free format or selecting them from a dropdown menu.
The plugin will automatically convert all time entries using a format that can be changed passing the timeFormat option; the default value is hh:mm p which will give something like 02:16 PM.