HN Showcase
Back to browse
Creating OCD versions of a yearly calendar

Creating OCD versions of a yearly calendar

by szemy2·Apr 10, 2026·3 points·1 comment
Visit ProjectView on HN

AI Analysis

●●SolidRabbit HoleBig BrainCozy

Factorizing 365 days into clean calendar math is genuinely clever.

Strengths
  • •URL-encoded state sharing lets you bookmark and share specific calendar configurations
  • •Radial diagram visualization makes factorization relationships immediately visible
  • •Historical calendar attempts included alongside custom factorization experiments
Weaknesses
  • •Niche audience limits practical adoption beyond curiosity and education
  • •No export or integration with actual calendar apps limits real-world utility
Category
Other
Target Audience

Calendar nerds, math enthusiasts, and people interested in alternative timekeeping

Post Description

I'm a big fan of history's many attempts to square the circle: divide a hard to factorized number (days in a year) into even chunks, without sacrificing things like agricultural seasons.

This little project explores different calendar versions. I have highlighted my favorite solution :)

- 6 days / week - 5 weeks / month - 3 months / quarter - 4 quarters / year

As a good European the remainder 5 days are end of year holidays.

You can also select some of the historical attempts.

Similar Projects

Design●Mid

Create new calendar systems to fix uneven months

The core insight — treating a year as a product of divisors and surfacing neat factorizations like a 360-base 'Daniel's Calendar' — is genuinely clever and immediately eye-opening. The site ships useful features: radial and grid visualizations, Gregorian comparison, historical calendars, and shareable URL-encoded configurations, which makes exploring variants addictive; it could be even more useful with export/sync features for real calendars but as an exploratory tool it's a delight.

Big BrainEye CandyNiche Gem
szemy2
103mo ago