Hi Patrick,
Please have a look at http://fullcalendar.io/scheduler/
I have created a Proof of Concept with it, including drag and drop. though it is not finished.
Please contact me, if you want me to (continue) build this widget for you.
Cheers Andries
andries @ flockofbirds . org
Hi Patrick, I am not 100% sure what you are looking for, but you can take a look at the calender widget from the appstore. It does not allow drag and drop, but you can use it for to display the time and dates.