Zenith Calendar

Zenith Calendar draws your year as the sky.

The year is the earth circling the sun, and today is where the earth really is — moving in real time, with the moon at its true phase. Everything you plan becomes a light in that sky. You don't page through a grid; you travel the model.

It is still a calendar at heart. The day, the week and the month are a tap away, reminders ring on time, and the calendars already on your phone show up here and can be edited here.

▸ THE SKY IS THE CALENDAR
• The year: the sun at the centre, the earth at today, your commitments marked on the orbit.
• Run a finger along the ring and the days turn under it; the chosen day's plans fan out toward the sun.
• The day: a turning globe with real daylight and night for where you are, your hours around the rim.
• The week: nine columns under the week's real moon. The month: a plain grid, with the moon at its foot.
• Every commitment has a page of its own — place, notes, repeats, reminders, its own time zone, and who is joining you.

▸ ALMANACS
Your calendars are almanacs, kept together in the binder. Keep personal and work apart, give each its colour and mark, turn them on and off, lock one so nothing changes it. About sixty holiday almanacs come with the app — twenty countries, and the faiths each by its own name, from Sunni and Shia to Theravada, Coptic and Sikh — with a celestial almanac of moons, eclipses and seasons, and western and vedic astrology. On first launch you pick which start lit; the rest wait in the archive. Tap a holiday for what it is, where it comes from in its tradition's own words, and how it is kept. Dates only as published, recorded through the year each source publishes. None count against your free three, and anything you remove waits thirty days in the pyre.

▸ SAY IT
• Speak a whole list — "dentist tuesday at 3, gym friday" — and each one lands on its day.
• Share text into the calendar from any app, or add from the quick-settings tile.

▸ ASK THE SKY
Cielo, the calendar's assistant, answers in plain words: "what's my week?", "move the dentist to friday". Bring your own key for the AI service you choose, or use on-device AI where your phone has it. Cielo removes nothing without your say. No key? Everything else works without AI.

▸ TIME, EVERYWHERE
• Keep a commitment on your clock or on another city's; its length shows across the zones.
• Reminders at the minute you choose, a notice the evening before, and the morning — today's commitments, once at dawn.

▸ MAKE IT YOURS
• Ten skies, with halo, nebula and starfield; sound, and haptics you feel as you scrub.
• The eye hides daily, weekly, monthly or yearly repeats from the year when you want it clear.
• Start the week on any day. Day names as letters, short names or the planets' old signs (☉ ☽ ♂ ☿ ♃ ♀ ♄).
• Text size relative to your system, labels on every button, reduced motion.
• Two home-screen widgets.
• Set it as your phone's calendar app.

▸ CALENDAR GOLD
Calendar Gold is one payment, this app, forever — never a subscription. Gold opens more than three almanacs, sending an almanac as a file, every sky including the living iridescent, My Sky's real stars over where you stand, the vivid colours, a picture as an almanac's mark, other calendar systems from Hebrew to Bahá'í, the layouts for folds and tablets, and chat memory. Every view, the reminders, the widgets, Cielo herself and backing up your whole calendar are free, and stay free.

▸ PRIVATE BY DESIGN
• No account. No sign-up. Your calendar lives on your phone.
• The people you tag are picked from your contacts one at a time; the calendar never reads your address book.
• Nothing you do here reaches us. What leaves your phone goes only where a feature needs it: weather from Open-Meteo with your position rounded to about 1 km, place search and maps from OpenStreetMap, your own Google Drive and calendars, and — only after you agree — the AI service you chose.

Open the year and find the earth where it is today.