Observed arrival · 2026-10-13
Koyomi Days: an inspectable I Ching
A free set of East Asian calendar and I Ching tools for casting hexagrams and exploring their structure and texts.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- I Ching readers and East Asian calendar explorers
- Worth noticing
- Its 8×8 grid maps each hexagram to upper and lower trigrams, alongside guides to the coin and time methods.
Field notes
The homepage lays out a full path from casting to interpretation: method guides, changing-line explanations, trigram references, and a short history sit alongside the hexagram index. Its coordinate grid places each of the 64 results at the intersection of upper and lower trigrams. The site says its judgments, images, and 384 line texts have been checked against the received Chinese text.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue