If you know of other 2024 Advent calendars that belong here, let me know and I'll get them listed!

• Festive Tech Calendar - Bringing lots of new content from different communities and people around the globe, through the month of December.
• Advent of Code - an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language
• Advent of JavaScript includes 24 challenges (you can purchase solutions)
• Advent of CSS includes 24 challenges (you can purchase solutions)
• HTMHell Advent Calendar
• Advent of SQL - 24 days of SQL challenges