Sun
- Sunrise—
- Sunset—
- Day length—
- Golden hour—
No template with moons drawn on. Every sunrise, moon phase, planet rise and ingress is computed from NASA's DE441 ephemeris — the same one JPL flies missions on — exact for any date from 13,000 BC to 17,000 AD. Almanacs read what the sky is doing, agendas when, planners how, journals what the time held.
Sun, moon and planets for your exact spot, computed from NASA's DE441 ephemeris — exact for any date across 30,000 years, the same engine every book uses. Not a template with moons drawn on: real positions, read live. Share any of it — and make the moon of a date that matters to you.
A birthday, an anniversary, the night you met — see its exact phase, computed from NASA's DE441 ephemeris across 30,000 years, painted to keep. Download or share it, free.
Grant location or type a city to fill the sky. Every value is read live from the ephemeris — nothing is stored.
No forms, no charts to read. The date and your place are the only choices — everything the book prints follows from them.
Almanac, agenda, planner or journal — daily through yearly, or a whole system.
One date, week, month, season or year, and where you are. That's all we ask.
Sun times, moon phases, planet rises and ingresses computed for your place.
A print-ready PDF, computed from the real sky, delivered on purchase.
A day, a moon, a season, a year — each assembled so its books share one sky and cross-reference cleanly. Bought together, they cost far less than the parts.
No account, no lock-in, no sky drawn from a template. What you pay for is a real computation you can check against the ephemeris yourself.
Every position, sunrise, phase and ingress is read from a DE441 ephemeris — the same one observatories use — and printed exactly.
Read the live sky over your own spot free, and download a real sample of any book — you know exactly what lands before you pay a cent.
Buy, download, done. We don't keep your location, and there's no login to forget.
Print-ready files land the moment you check out. Live calendars land straight in your phone.
Share Cycles Arc with your people and earn on every almanac, agenda and print they buy — up to 33% lifetime. One link, a 90-day window, paid monthly in euros. No cost to join.
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A date, a place, the rough hour — the moon's exact phase from NASA's DE441 ephemeris, painted for you to keep.
A screen image, free to keep. Want it print-ready — with libration, the distance track and the whole month? See the sky prints →