This ever-growing curated collection of interface patterns on CodePen is a reliable source of inspiration.
A wonderful—and humorous—deep dive into all things time-related.
Building a calendar sucks. Like there’s really cool shit you can do, since every calendar out there today is basically straight outta 2005, but at the end of the day you’re stuck dealing with all of the edge cases that all your dork friends have warned you about since the dawn of time. (Like literally, the dawn of time is a separate edge case you have to account for as well.)
This also contains a well-deserved shout-out to ISO 8601:
ISO 8601 is one of my favorite standards and/or RFC out there. And yes, you should definitely have a favorite.
I do have a favourite RFC—ask me about it sometime over a beer.