Introduction

Orrery reads the sky over the chart. A brass model with the chart as its sun and six bodies around it, each one a part of a memecoin, turning through twelve houses.

The sky changes at midnight UTC and holds all day.

Quick start

1. Open the page. The orrery shows the sky of the day and the sign of the day.
2. Type a ticker. The arms turn at least once and stop at that ticker's houses.
3. Read the list. Six bodies, their houses, the aspects and one thing to avoid.
4. Save the sky map. A round 1000 × 1300 PNG.

import { read } from "https://orrerysky.vercel.app/lib/orrery.js";

read(null, "2026-10-24").sign;     // "The Ape", the sign of that day
read("FROG", "2026-10-24").sign;   // "The Bell"
read("ORRERY").grand;              // true

<script type="module">
  import { read } from "https://orrerysky.vercel.app/lib/orrery.js";
  document.body.textContent = "Today the sky points at " + read().sign;
</script>

curl -O https://orrerysky.vercel.app/lib/orrery.js

Glossary

The bodies

The houses

Aspects

At most two aspects are shown. No aspects is a quiet sky.

The rule

1. Seed. FNV-1a of orr:, the UTC date and, for a ticker, : plus the ticker. Into mulberry32.
2. Angles. Six numbers, six angles from 0° to 360°, Mercury first.
3. Houses. Angle divided by 30, rounded down.
4. Then. The text of each aspect, the rising house, the thing to avoid, in that order.
5. Exception. ORRERY places its six bodies from 246° to 263.5°, all in Diamond Hands.

var seed=t?'orr:'+DAY+':'+t:'orr:'+DAY, r=rng(hash(seed));
var ang=BODIES.map(function(){return r()*Math.PI*2});
var hs=ang.map(function(a){return Math.floor(a/(Math.PI/6))});

orrery.js

import { read, HOUSES, ROLES } from "https://orrerysky.vercel.app/lib/orrery.js";
read("MOON", "2026-10-24");
/* { ticker: "MOON", day: "2026-10-24", sign: "Diamond Hands", grand: false,
     bodies: [ { body: "Mercury", role: "The dev", angle, house, line }, ... ],
     aspects: [ "..." ], avoid: "..." } */

Try it

Leave it empty for the sky of the day, or type a ticker.

Loading

Limits

• Not astronomy. The angles come from a hash, not the real sky.
• UTC. The day turns at midnight UTC.
• Runs in the browser. Nothing is sent anywhere.

$ORRERY

Read $ORRERY on any day and all six bodies stand in Diamond Hands.

FAQ

Why is the alignment in Diamond Hands?

Because that is where the brass room keeps its coin.

Can I read a past day?

Yes, with read(ticker, "YYYY-MM-DD") in code.

Changelog