When in the Calendar view for Microsoft Outlook and browsing around different dates, you can press Alt+O and you’ll jump to today’s date.
Why does this work? On the toolbar, note the underlined “o” in the “Today” button. Any of the underlined letters can be used along with Alt instead of moving the mouse to click on the button.
Some useful shortcuts are then easy to find — Alt+I for Find, Alt+Y to go to Day view, Alt+W for Week view, Alt+M for Month view, and so on.