You've been pulled into an impromptu meeting where the client now wants a web calendar tacked onto their application. Grimace. Walk out worried. But most important ...

Don't re-invent the wheel.

FullCalendar.js has most of what's required by default, is extensible and will take a json web feed. Given a list of hash refs, Mojolicious will spit out json. I'll show you a short template for displaying the calendar. Creating all your calendar appointments in json is left as an exercise for the reader.