Although Google Calendar (calendar.google. com) is a web application that runs in a browser, some of its features can be used with keyboard shortcuts.
For example, to create a new entry, press C, while edit an existing reminder, highlight the entry, and press E. The last step can be reversed by pressing Z, you can jump to a specific date by pressing G, and you can turn on the event overview by pressing A. You can switch between daily, weekly, monthly and individual views by pressing D or 1, W or 2, M or 3, and X or 4.