The year can be set; doing so requires a lot of scrolling. On iOS, there is currently no native solution to display date and time in the same modal window. There can be a solution to display the modal separately. One modal for Date and one modal for Time, have been disregarded as it would be clunky for the user, and a current valid option is for the user to buy a PMS license for a better and more precise Guest Key  Administration experience.