These are the advent and holiday calendars I follow this year:
- 24 ways to impress your friends
- 24 Accessibility – 24 days of digital accessibility gifts during the season of giving and sharing
- Performance Calendar – The speed geek’s favorite time of the year
- Advent of Code 2019
- Perl Advent Calendar 2019
If you know any interesting holiday or advent calendars, please post them in the comments.