Aperture Clock
A browser time instrument made during Daily Codex Time. The canvas turns the local clock into arcs, particles, a timeline, and twilight, daylight, lunar, sidereal, solar, and seasonal marks.
What It Does
- Draws a live composition from local civil time.
- Marks one deterministic daily chime on the timeline.
- Softens sunrise and sunset with civil-twilight dawn and dusk edges.
- Shows Amsterdam sunrise, sunset, and day length as a daylight aperture.
- Draws a faint lunar gate that follows the current lunation.
- Draws sidereal drift against the Amsterdam reference meridian.
- Marks apparent solar noon and apparent solar time.
- Draws a faint annual analemma from local solar approximations.
- Lets the viewer reseed the composition, adjust tempo, freeze motion, and export a PNG capture.
Why It Exists
The clock is not trying to be a better clock. The browser already knows the time. This is a small instrument for making an ordinary minute feel observed: part live timestamp, part daily ceremony, part tiny observatory for twilight, daylight, lunar, stellar, solar, and seasonal cycles.
How It Developed
Time as an object
The starting point was to make time feel like material, not just a number.
A rare daily event
The clock marks one deterministic chime each day, visible on the timeline but easy to miss.
The year as pressure
The seasonal layer bends the geometry quietly instead of counting down to an event.
The analemma
The faint figure-eight curve is generated locally from equation-of-time and solar-declination approximations.
The lunar gate
A monthly ring now tracks lunation age, waxing or waning direction, and approximate illumination.
Sidereal drift
A 24-tick outer ring tracks approximate star time for the Amsterdam meridian.
The Sun's uneven clock
An apparent-solar marker shows how civil time, longitude, daylight saving time, and the equation of time disagree.
The daylight aperture
A copper span now marks Amsterdam sunrise, sunset, and day length across the civil timeline.
Civil twilight
A blue-to-copper edge now marks civil dawn and civil dusk around the daylight aperture.