The Day
Thirty-six hours: eighteen of daylight and eighteen of night, the sun crawling across the sky a third slower than Earth's. Split into three twelve-hour blocks. Nobody works more than eight hours in a thirty-six-hour rotation — the Shift-Equity Act.
Active Block
Work, schooling, civic business. Hours are counted within the block — "the fourth hour of the Active Block" is how anybody says it, and the eleventh hour is the last useful one, which is why the phrase carries the weight it does.
Lifestyle Block
Twelve uninterrupted hours of free time every day, through the multi-hour sunset crawl. The daily weekend. This is why weekends were abolished and why burnout is structurally impossible here — nobody needs to save their life up for a two-day recovery.
Sleep Block
Behind the Privacy Portal, unmonitored. The month of Stillness turns the whole planet's attention to it, and the Sanctuary Exception exists so that these twelve hours belong to nobody but you.
The Tide — the nine-day week
Tied to the outer moon's roughly nine-day orbit. Four Tides make a month exactly. The nine days are named for the slow-motion movement of the amethyst ocean, and people say Flow and Surge the way an Earth reader says Tuesday.
The older numeric habit — "the sixth day of every Tide" — survives in registers, filings and county returns, and in the mouths of people who think in counts rather than names. Selah is one of them, which is why she calls her shaft day the sixth day and has never once called it Surge, and why the unit in her outer room is called Sixth.
The Cycle — ten months of thirty-six
Ten × thirty-six = three hundred and sixty. Each month is named for a seasonal, ecological or philosophical shift rather than a god or a number.
| # | Month | Season & character | Days |
|---|---|---|---|
| 1 | First-Light | Early spring. High-altitude ice-melt. | 1–36 |
| 2 | Amethyst | Mid-spring. Peak filtration cycles at the Hydrosphere. | 37–72 |
| 3 | Velvet | Late spring. Peak canopy growth in the Black Velvet Forest. | 73–108 |
| 4 | Citadel | High summer. Clear skies over the Mountain-Plains. | 109–144 |
| 5 | Resonance | Late summer. Peak output of the LRC Grid. | 145–180 |
| 6 | Siphon | Early autumn. The turn to cooler winds. | 181–216 |
| 7 | Founding | Mid-autumn. The launch of the Ark-Genesis. | 217–252 |
| 8 | Kush | Late autumn. Resin-harvesting in the Black Velvet Forest. | 253–288 |
| 9 | Ledger | Early winter. Preparing for the annual debt wipe. | 289–324 |
| 10 | Stillness | Deep winter. Planetary focus on the Sleep Block. | 325–360 |
The Observances
Aura-36 does not declare holidays. It triggers them. The Rolling Observance calendar was written into the founding instrument forty years ago and runs on astronomy and on the year's own arithmetic, and no seat was ever given the power to stop one — not because anybody was protecting them, but because nobody at the founding could think of a reason a person would want to. After the Handoff there is no body left that could cancel one even if it wished to, and they go on triggering, on time, through a coup, a lithospheric crisis and a change of government, because the thing that keeps them is a moon.
Fixed — they fall on the calendar
- Ledger's End — twelve days, at the transition from Ledger into Stillness, and the end of the year in every sense that matters. Every outstanding shift-swap on the Luxury Ledger is wiped clean; no debt of hours crosses into the new year. Banners go up across the spans and have to come down again in a wind. The Ledger's End provisioning committee is nominally seasonal and has quietly become one of the most competent standing bodies on the planet.
- The Founding Hush — in the month of Founding. The solemn counterpart to the Festival: one full Lifestyle Block of planet-wide voluntary silence, twelve hours, marking the day the Ark-Genesis left Earth. Not enforced by anything; there is nothing to enforce it with. Even the Anti-Clout Social Network goes quiet, which is the only day of the year it does.
- The Reading — annual, from Year 3. The eleventh clause of the household-unit instrument requires its own review to be read aloud, every year, forever, together with the count of units that would have to be recalled if it were exercised that day. It began as a compliance requirement and within a few years had become an occasion people turn up to with no business being there. A holiday that started life as a paragraph in an instrument, which is the most Aura-36 thing that has ever happened.
- The Weighted Vigil — monthly, one per Cycle. Not planetary: the observance of the Weighted, the smallest countercultural sect, who wear voluntary ballast collars and practise Grounding against a gravity that will not push back. Most citizens have never attended one and everybody knows somebody who has.
- The Loom — annual, in the month of Kush, and kept by the unledgered settlements rather than by any county. At Fissure 9 it is the shelf's own kush harvest: the crop processed, the leftover stalk broken down for hemp, and the whole settlement turning it into cloth, cord and fibre over a fortnight. Every group on the shelf grows its own and contributes to the same cloth. It appears in no public document anywhere, because the people keeping it appear in no public document anywhere.
Moving — nobody schedules these and nobody can move them
- The Eclipse Festival — the Festival of Lights. When the Day Tide and the Deep
Tide align, their pulls stack into a Convergence Swell and Aura-Marina's platforms ride out a foot
or two of extra sea. The Festival triggers on that alignment. It is not declared, has never been declared, and
there is no procedure for declaring it.
The lights go out by hand — cultivated bioluminescent moss in glass, resin lanterns, banks of them along the terraces — because the grid was never fully trusted with it. It is the one night in the cycle when the entire population is outdoors, looking up, and not, in any meaningful sense, being watched.
Which is why it has been used twice. The coup's only logistics line ran on it — the Crown Sanctuary seized during a Festival, every privacy exemption on the planet closed at once. And the Handoff itself happened at one, at the Assembly Plaza, on the forty-year milestone of surface settlement. The best night of the year is also the night this world has twice changed hands.
- The Handoff — annual, and it cannot be scheduled. It took place during an Eclipse Festival, so its anniversary rides the alignment and drifts against every other date on the calendar: the day this world stopped having a ruler falls on a calendar nobody controls. There is a long-running public argument about whether it is its own observance or simply part of the Festival, conducted in good faith, and no body holds the authority to settle it, so it recurs annually along with the thing it is about. The Watchmen have never attended one in any official capacity.
- Swell Days — seventy-two-hour rolling observances drawn against the Shift-Swap Economy under the Dynamic Ledger. Spontaneous community breaks, timed to the Convergence Swells by Twin-Tide Cartographers, whose signature skill is the Two-Beat. The Buoy Bridge technicians who make the swell safe are working through every one of them.
Two Year-Counts, And They Grate
The Aura Year is exactly 360 Aura Days = 540 Earth days ≈ 1.48 Earth years. It runs the calendar: the months, the Tides, the seasons, the observances, every date on every county return.
The Earth-Standard Year runs ages, elapsed time and history. It was kept because the founding generation was Earth-born, the ship's clocks ran on it, and the Bound Ledger was written in it — and by the time anybody proposed dropping it there was no body with the authority to drop anything.
Both are true at once and they drift against each other forever at 1.48 to 1. A citizen is ninety-four years old in Earth-standard years and has lived through sixty-three Aura Years, and both figures are printed on the same page of the same document. There is a conversion table. Nobody enjoys it, and clerks treat a filing that mixes them as a standing joke.
Reading rule: any age, any "Year 3 after the Handoff," any "four years later" is Earth-standard. Any month, Tide or named day is the Aura calendar.
Dating A Scene
The same moment in every register that exists.
Surge, third Tide of Kush, Year 3
How a person would say it —
"Surge, in Kush."
How a filing would print it —
Y3 · Kush · T3 · D6
How a unit's runtime writes it —
Y3.276
Working it back —
Y3 = third Earth-standard year after the Handoff.
.276 = the 276th day of that Aura Year, of 360.
Kush is month 8, so it runs days 253–288.
276 − 252 = day 24 of Kush.
24 ÷ 9 = third Tide, sixth day — Surge.
Which is arithmetic nobody does in their head, which is exactly why
the runtime prints one number and a person says two words.