Of course, you must first enable keyboard shortcuts in
Settings>Customize>Preferences>(show advanced preferences)>Keyboard shortcuts.
The current shortcuts are shown at:
https://www.fastmail.help/hc/en-us/a...s/360058753534
On any screen (when the focus is not on an entry field), you can see the available shortcuts using
?. That also brings up a link at the bottom to get to the shortcut listing page shown above.
The correct shortcut to reach the calendar (or any other feature accessed through the big upper left main button) is Shift-g, followed by the desired feature such as C for Calendar, A for contActs,N for Notes, F for Files, and S for Settings. You can't just type capital C.
In the Calendar, use
v (followed by the first letter) to switch views. So
vm switches to Month view,
vw switches to Week view,
vd switches to Day view,
vc switches to by calendar view, and
vu switches to Upcoming view. Entering
/ moves the focus to the Search Calendar box and brings up a list of upcoming events (which I really like).
Bill