Earth Circa

ARKANA Studios

In-app purchases

About this app

Earth Circa is a living astronomical clock — a real-time visualisation of where we stand within the great cycles of nature. Unlike the rigid grid of a conventional calendar or the relentless forward march of a digital display, Earth Circa shows time the way Earth experiences it: as continuous, overlapping, spiralling circles.

At the centre, the Earth turns in real time — day into night, night into dawn. Around it, the Moon traces its precise path through the lunar cycle, waxing and waning through its 29.xx day journey. The outer ring carries the calendar year, seasons shifting through the zodiac as Earth completes its passage around the Sun.

Spin the clock to choose the time of day. Spin the Moon to move through the lunar phases. Spin the calendar to travel through the months and seasons.

Time has never felt so natural — or so alive.

What’s new

Earth Circa is a living astronomical clock and calendar for your phone.

Watch the Sun, Moon and seasons move in real time. Track lunar phases, solar angle, zodiac transits, and the wheel of the year from your exact location. See the world as it truly is in continuous relationship with the cosmos.

Earth Circa+ unlocks Vedic sidereal astrology, calendar event creation,
colour moon cycle tracking, and all future premium features.