YARDS - under KEEPER ERIS
The Yard Watch
WATCHER persist 28 · act 28 · react 84 · learn 7 · loop 4
LIT WATCHER keeps a night only when the post is that night modulo seven. Twenty-eight nights fill four weeks. Each of the seven posts stands four times. The post numbers themselves sum to 84. The neighboring post is dropped every night.
AMBER The letters A through G are posts, not people. The sprinkler block is the suburban twin, and it keeps a different residue. The courtyard is the Petersburg one.
WALL Four weeks. The lantern is drawn, not lit by a clock.
MODEL A chalk roster. Read down a letter and the nights are that residue.
Checking the yard.
Seal sha256(name|slug|blurb): dd626ac58537e238fd92a8ebfc57ef0417d27be30bf704b035c0baea20036f0f