Do I need to mess around with the user-agent, or is there a less intrusive 'hack'?
2 Answers
You have multiple options available:
2000's mobile (WAP style)
Ready to use, just go to https://calendar.google.com/calendar/m
Edit 2022: Seems to no longer be available and redirects to /gp
2010's mobile (iPhone 3 style)
Ready to use, just go to https://calendar.google.com/calendar/gp
Embeded widget
Use this url to configure the widget: https://calendar.google.com/calendar/embedhelper
Then you can use the iframe code to integrate this.
You may also want to just extract the src
value and HTML entity decode it to use in your browser (Decoder: https://mothereff.in/html-entities)