# Sumday

Project, Worldwide.

> a daily game: make an equation from today's date
>
> — in its own words, from playsumday.com

- Website: https://www.playsumday.com/
- Listed since: 2026
- launched: 2026-08-27
- launch post: https://news.ycombinator.com/item?id=49464247
- hn score: 4
- Last verified: 2026-08-27


## Sources

- Hacker News, "Show HN" — https://news.ycombinator.com/item?id=49464247, read 2026-08-27

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startup.is · https://startup.is/projects/sumday · open data: /api/v1, /llms.txt