Questions

A picture of the sky as it stood over your birthplace at the minute you were born: where the Sun, the Moon and the planets were, and which sign was rising in the east. It is cast from your date, time and place. Two people born in the same town on the same day, an hour apart, have different charts.

The Sun is who you are at your core. The Moon is what you need to feel settled. The rising sign, or Ascendant, is how you come across: the sign coming up over the eastern horizon as you were born. They are the three most people start with; a full chart has ten planets and twelve houses.

Every position comes from DE440, the planetary ephemeris NASA’s Jet Propulsion Laboratory publishes. Our tests check three known charts against NASA JPL Horizons to within one arcminute, and the Ascendant against an independent formula.

You still get the chart. Without a time we omit the houses and the rising sign, because those depend on the exact minute, and we tell you if the Moon or Sun changed sign that day. The written analysis then skips the two chapters that need houses.

Placidus by default, the system most astrology software uses. You can switch to Whole Sign, Koch or Equal on your chart page and the chart is cast again.

Birth years from 1800 to 2100, anywhere on Earth. Places come from a built-in database of about 34,000 towns and cities with their time zones, including the historical daylight-saving rules that applied on the day.

Placidus and Koch houses are undefined at very high latitudes. When that happens the chart uses Porphyry houses instead and says so on the page.

A language model does the writing, working from your finished chart, notes drawn from it and a short brief for each chapter.

No. It reads the chart you were born with, placement by placement, and describes what that chart says about you.

A few minutes. The chapters are written from your chart in a few rounds, the closing chapter last, then laid out with the figures and turned into a PDF. When it is ready, we email you the link. The order page updates itself too, and the link in your receipt keeps working.

Twelve months from purchase for a full analysis. Weekly analyses stay on your account for eight weeks and monthly ones for three months. Download the PDF and keep it; it is yours. The order record stays on your account either way.

Yes. Cast their chart from the baby page with their first name, and the analysis is written about them, for you to read and keep, at the same price. If you do not know the birth time, you still get the Sun, the Moon and the planets.

Every order includes one free rewrite. Correct the details from the analysis page and a new analysis is written; the original stays on your account. An analysis that has been rewritten is not refundable.

Two shorter analyses for any chart; neither needs the full analysis first. Compatibility compares your chart with another person’s, area by area: as friends, in love, in how you talk, working together and under one roof, with every contact in a table and the composite chart of the relationship, in nine chapters. The year ahead reads your solar return: the chart for the moment the Sun comes back to the place it held when you were born, cast for where you are that day, and read against your birth chart as the year from that birthday to the next, month by month, in nine chapters. Casting either chart is free; the written analysis is the purchase.

No. The weekly and monthly analyses need only your birth details, entered on the subscribe page. They read the current sky against your chart for the period; the full analysis reads the chart itself, and you can add it at any time, for your own chart or anyone else’s.

Your birth chart costs nothing: the wheel, your Sun, Moon and rising, and every placement, read in plain words. A full birth chart analysis is $29, and the compatibility and year ahead analyses are $19 each, or $14 each in the same order as a birth chart analysis. Every analysis is paid for once, and its PDF is yours, and an analysis you buy for yourself comes with 4 weekly analyses, with no card. Join the yearly plan during those weeks and what you paid for your birth chart analysis comes off your first year. The membership is $99 a year (about $8.25 a month), with your birth chart analysis and your year ahead included, or $12 month to month, until you cancel.

We keep them to cast your chart and, if you buy one, your analysis. They never appear in a link, an email subject or an analytics event, and deleting your account removes everything.

No. You can buy with just an email address. An account is created from that address so you can come back to your analysis, and you sign in with a link we email you; there is no password.

Write to hello@underyourstars.com with any question, before or after you buy. If it is about an order, say what you bought, or the email address you bought with, and we can find it.