Almanac
The Almanac app icon: a Maya jaguar glyph

For iPhone

Almanac

Every day, as the ancients counted it.

Almanac names any day from 10,000 BC to AD 3000 the way the Maya, the Egyptians, and the astronomers of China and Islam counted it. It also shows when sixteen ancient sites, from Göbekli Tepe to Machu Picchu, line up with the sun, the moon and the stars.

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12,000 years
10,000 BC to AD 3000
4 calendars
Maya, Egyptian, Islamic, Chinese
16 sites
From Göbekli Tepe to Machu Picchu
30 alignments
Sun, moon and stars

Ancient calendars and the sky they were built to follow.

Turn the wheels of time

Spin the Maya, Egyptian, Islamic and Chinese calendar wheels with your finger and watch the days go round. Type a date in any of them, from 13.0.0.0.0 to 1 Thoth or 1 Muharram.

Where stone meets sky

Stonehenge, Newgrange, Giza, Chichén Itzá and more. Drag through the hours and watch the sun cross each plan into line, on a compass that turns with your iPhone.

The sky above you

Where the sun rises and sets for you, at the solstices and equinoxes. Every solar and lunar eclipse, with what you can see of it from where you are.

Your birthday, anciently

Find your Maya day sign, Egyptian season and Chinese animal, plus your Hijri, Hebrew and Indian dates, and share them as a card.

Reminders and widgets

Follow a site to get a reminder before its next alignment. Add a calendar wheel, an ancient site or a sky compass to your Home Screen.

Shown with its sources

Every calculation follows published astronomy, from Jean Meeus’s Astronomical Algorithms onwards. Tap “Show the math” on any alignment to see where it comes from.

Private by design.

Everything Almanac shows is calculated on your iPhone, and it works offline. There’s no account, no ads, no analytics and no tracking. Almanac doesn’t collect any personal data.

Read the privacy policy