A Modern Almanac for Everyday Life · Est. MMXXVI
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Learn the Signs · The calculation

How the Sign Index Works

The Sign Index is a 0 to 100 score that translates the day's signs into one clear answer: what does today favor? It blends the Moon's current sign, moon phase, body-map tradition, local sky data, and weather into a simple daily read, while staying honest about what is astronomy and what is folklore.

What the Sign Index is

The Sign Index gathers scattered almanac guidance into a single score you can read at a glance. A higher number means the signs and conditions are more favorable. A lower number means tradition leans toward waiting or choosing another day. It is calculated for your location, and it can be different for different activities.

What goes into the score

Every Sign Index starts from a neutral middle and then uses several inputs to move the reading up or down:

Moon's current signPhaseActivityWeatherLocal sky Sign Index 0 to 100

How the inputs are weighted

The Sign Index is weighted so the most relevant signals carry the most influence. The Moon's current sign, phase, and the activity you choose shape the heart of the score. Local sky and weather data add practical context.

Weather has the strongest effect on near-term readings, where local conditions are most reliable.

The result is a guide, not a guarantee. The Sign Index points you toward the better and the lighter days; it is meant to inform your own judgment, not replace it.

Why a day is favored, neutral, or best avoided

The final number falls into one of five bands, and that band is what colors your reading and the 7-day outlook:

85 to 100
Excellent: the signs, phase, and conditions strongly agree. A green-light day.
70 to 84
Favorable: clearly on your side. A good day to act.
50 to 69
Neutral: mixed or mild. Fine to proceed, with nothing strongly for or against.
25 to 49
Caution: tradition leans against it. Consider waiting or choosing a lighter version.
0 to 24
Best Avoided: the signs are working against this activity today.

Free daily read versus Premium guidance

The free daily read gives you the day's overall Sign Index, the Moon's current sign, phase, body area, and general favorability. Premium unlocks the deeper interpretation: best-for guidance, best-avoided activities, timing windows, longer-range forecasts, and activity-specific explanations.

Why different activities get different scores

This is the heart of it: one day is not simply good or bad. It is favored for some things and best saved for others, just as the old almanacs taught.

Same sky, different timing

Picture a waning Moon in a drier sign. In almanac lore, harvesting is favored, since crops gathered then are said to store well. Planting is less favored, since seeds are traditionally sown under more fruitful signs. Same sky, different guidance, because each activity asks for different conditions.

That is why the homepage separates favored activities from activities best saved for another day. We score each activity on its own terms, then surface what today actually supports. The overall Sign Index is the broad daily read, while activity scores show how the same day changes depending on what you want to do.

Tradition, made measurable, not made up

The astronomy in the score, including sign, phase, illumination, sunrise, sunset, moonrise, and moonset, is calculated from live sky data. The favorability layer is traditional folk wisdom, presented as tradition. The Sign Index is a way to read that tradition clearly, not medical, agricultural, financial, legal, or professional advice.

See today's Sign Index

Your score, general favorability, and the next seven signs are live on the homepage right now. Premium unlocks deeper activity guidance and longer-range planning.

Check today's signs