Cadence

Moon calendar, biorhythms and a daily score in one place

Cadence answers one question: is your day, week, month or year likely to feel easy or hard? It reads three traditions side by side, your biorhythm cycles, the Moon and the planets, and turns them into one score from 0 to 100 for every day.

Body

Physical, emotional and intellectual biorhythm cycles from your date of birth, with the critical days when a cycle crosses zero.

Moon

Phases, the Moon’s sign, void-of-course times, lunar days, lunar mansions, apogee and perigee, and moonrise where you are.

Sky

Planet ingresses, retrogrades, eclipses and aspects, transits to your birth chart, sunrise, sunset and planetary hours.

What you can do

Questions

Is Cadence free?

Yes. There is no account and no advertising. Everything is calculated in your browser, and your birth details are saved only on your own device.

How is the day score worked out?

Each day gets a score from 0 to 100: your biorhythms count for 35%, the Moon for 35% and the planets for 30%. Without a birth date the Moon counts for 55% and the planets for 45%. Days from 72 up read as excellent, from 60 favourable, from 46 mixed and from 34 challenging. Open “Why this score” on any day to see what moved it.

What is a void-of-course Moon?

It is the stretch between the Moon’s last major aspect to a planet in one sign and its entry into the next sign. Tradition treats it as a time to finish things rather than start them. Cadence shows when each one begins and ends.

What are lunar days?

The lunar month is split into 29 or 30 lunar days. The first begins at the New Moon and each one after it begins at moonrise where you are, so they rarely line up with calendar days. Each lunar day has a traditional character, which Cadence explains.

What are biorhythms?

Biorhythms are cycles that start on your day of birth: physical (23 days), emotional (28 days) and intellectual (33 days). The idea dates from around 1900. Studies have not found that it predicts anything, so treat it as a prompt for reflection.

Do I need my birth time?

No. Your date of birth is enough for biorhythms and the day score. Add a birth time and place to see your full birth chart with houses and rising sign, and transits to your birth Moon.

Biorhythms and astrology are traditions people use for reflection; neither is supported by scientific evidence. Positions are calculated in your browser: the Moon with Meeus’s series, the Sun and planets from JPL’s low-precision orbital elements. Moon events agree with published tables to within a few minutes; planet signs and stations to within hours. Times are in your device’s time zone.