If you have ever needed to limit the selection of weekends or change the week start date from Sunday to Monday but found that the out of the box date picker can't handle it then this video is for you! I have created a FREE Power Apps Date Picker/Custom Calendar Component that addresses these issues plus more! This one control can replace a date picker (complete with pop up/dialog box like functionality) AND act like a traditional calendar to show events for a selected day.
You can download the component here: https://github.com/aprildunnam/PowerApps/blob/master/Components/Calendar%20Component%20(4).msapp