Printable day sheets turn the show advance into a clean, templated run-of-show that you can hand to the artist, the crew, or the front-of-house staff. It carries the lengths, end times, and notes that keep a show moving, formatted the same way every time.
Day-of confusion usually comes from different people working off different versions of the schedule. A single templated day sheet, printed or shared, keeps everyone on the same page from load-in to last call.