How do I delete a shoot day?

If you're using a iOS,  swipe left on the shoot day, to reveal the delete button. 

On Mac, with the left sidebar open, select the Shoot Days Icon on the left which brings up a list of all your shoot days, highlight the day you want to delete, right click to open the delete option. If you don't have a mouse, use two fingers to click or tap on the touch pad to open the delete option.