Install Ultimate Suite for Excel and find the Date Picker add-in on the Ablebits Tools pane. Click on the Date Picker icon - the utility is activated. Now you can select a cell, right-click it and see a new option in the drop-down menu - Select date from calendar. If you choose this option, the pop-up calendar will appear. Now you can find the date in the calendar, click on it and get it inserted into the initially chosen cell.