Bogenplan
Your calendar, laid out by the Sun.
Bogenplan shows the calendars already on your device, read through EventKit, laid out in Bogenzeit — spans from solar noon and midnight, with sunrise and sunset between. A day runs from one solar midnight to the next and every span is the same height, so noon and the horizons sit at fixed places while your events move with the season.
Your events, in solar time
It reads the device's own calendars and only displays them — it never creates, changes or deletes an event.
Days side by side on iPad
As many days as fit share one gutter of span marks, their horizons lined up.
The season, made visible
Sunrise, noon and sunset stay put while the daylight stretches and shrinks around them through the year.
Built on Bogenzeit
Bogenzeit is the open standard behind it, with a reference engine and the test vectors every port passes.