C# Advent 2026
Two new C# posts every day from December 1 to 25, written by the C# community.
5 days until sign-ups open!
Sign-ups open on November 1.
Add it to your calendar: sign-ups open C# Advent 2026 starts
How to take part
- Request a day once sign-ups open: sign in with GitHub and pick an open day. You don't need a topic yet.
- Write about C#, in English: a blog post, a video, or anything else you can link to, opening with a line that says it's part of C# Advent.
- Publish it on your day, and we'll share it with everyone following along.
Can't promise a day? Join the backup list once sign-ups open, and fill in if someone drops out. The About page has more, and the terms have the rules.
Get an email when sign-ups open
We'll email you when each season's sign-ups open, and now and then with news from the organizers. Nothing else unless you ask for the daily posts too, and every email has a one-click unsubscribe.
We'll send a link to confirm your address first. See the privacy page.
Thanks for C# Advent 2025!
48 posts from 48 authors, December 1 to 25, 2025.
Thank you to every author who wrote a post, and to everyone who read and shared them. C# Advent only happens because of you.
See you in December! Until then, catch up on anything you missed in the archive.
Wrote for C# Advent before?
Sign in with GitHub to see your C# Advent history and how your posts did.
Subscribe to the RSS feed for every new post, or try some other developer advent calendars.