Astronomical
The sky begins to loosen. Only instruments notice.
Room 175 / The Nocturne Wing closes
Twenty-four coded lights wait on one horizon. Dawn will find each of them in its own time.
Scroll / the lamplighter’s reverse round
The high ice cloud disappears first.
Dawn reaches this lightNight officially ends here.
Every light in this wing was code.
The dark was real. — WING VII / FABLE 175
The official edge
It ends earlier, when the centre of the Sun reaches six degrees below the horizon. This is civil dawn: enough scattered light for terrestrial objects to become distinct, while the brightest planets may still hold their ground.
“The sky is already day before the Sun arrives.”Dr. Elian Voss, Bellweather Twilight Ledger
The sky begins to loosen. Only instruments notice.
Sea and horizon part company. Silhouettes take names.
Night is over by definition. Dawn is still becoming visible.
The reverse round
The dissolve follows visibility, behaviour, and human habit rather than room number.
51° 18′ 42″ N
Bellweather ridge / east field
06:04:19 / Limb clears the Bellweather ridge
Now the wing returns them to the day.
Plain-text constellation
The dawn horizon is visual. This ledger preserves the same route as text, with every room directly reachable.