The lapis arc is the whole idea in one stroke — and it is the short one. Turn the wheel and 8 of the 9 movable feasts swing 20 days together, because each is reckoned from Pascha: Palm Sunday is Pascha−7 whatever Pascha does, so it rides with it, rigidly. Άγιος Γεώργιος swings 10. His day is 23 April, his own, every year — but in 2027 Pascha overruns it, so the feast is carried to Bright Monday, 3 May. Reckoned from Pascha, or displaced by it: two different kinds of movement, and the difference is legible as one arc being half the length of the others. Every date here is read from the corpus, not reckoned in your browser.

The wheel turns. The year control is pure CSS, so the turn survives with JavaScript off. The band of 9 movable marks now swings between two years the corpus actually gave us — a true rotation of the same marks, since each feast keeps its name-set — while the 217 fixed marks are drawn once, outside the turn, which is why they cannot move rather than merely don't. And the payoff the second year pays: the same 414 names need 224 days in 2026 and 222 in 2027, because the swing lands 4 feasts on days that already had a name.

The wheel knows who is asking. Add ?name= to this URL and the panel above answers from the same vetted corpus that drew the wheel — or says, plainly, that it doesn't know you. What it will not do is guess: there is no fuzzy matching here and there never will be, because a near-miss would hand a stranger someone else's day with a wheel drawn to prove it. Two things fell out of building it that are worth naming, because both would have been lies told confidently. A name is not a day: 66 of our 331 names carry more than one feast — Θεόδωρος carries three — so the panel turns to the next one and discloses the rest at the same weight, rather than picking one and calling it yours. And a name is not always one name: «James» is Δημήτριος and Ιάκωβος here — 4 feasts between them, the nearest two just 3 days apart — so it offers both with their dates and lets you choose, because choosing for you is how you get told the wrong one.

The ring turns, too. Until now the panel named your day and the wheel beside it pointed nowhere: the promise was the wheel opens already turned to your name, and this page conceded in writing that it didn't. Now a spoke runs from the hub to your day — the same reach as the today marker, in the ink this wheel uses for the join between its prose and its ring, so it is not a new colour to learn. The two rules the panel argued for are drawn rather than restated. Every day your name is kept on gets the same spoke, at the same weight — Θεόδωρος gets 3, because the corpus holds 3 and a wheel that pointed at one would be overruling the panel in the louder medium. The next one is then marked by an addition — a diamond at the ring — never by shrinking the others. And where the corpus honestly holds two names for one string, «James» draws all 4 days and no diamond at all: the diamond is the answer, and there is no answer.