In Outlook calendar there are some standard ways we can view the amount of days displayed to us on the screen I.e. by clicking “Day”, “Week”, “Month” etc. on the “Home” tab within the “Arrange” group.
It is also possible to view a specific number of days not necessarily available as buttons on the Ribbon by pressing “ALT” + any number between 0 and 9. The number represents how many days we want to display i.e. pressing “ALT” + 3 will give us a view with 3 days.
It is worth noting that the number 0 actually represents 10 days which is the maximum amount of days we can display using this shortcut.