Through Kentico's default calendar picker, i do not believe so. Here's some great options though.
1: Set the form control to a textbox, and then use your own Date Selector (bootstrap's DateTime picker is pretty nice and has a great API that should be able to do what you want it to)
2: Clone the Calendar Form Control and modify it to add in the features you want, or build your own Custom Form Control. There's info on how to do this in the documentation, it's pretty easy!