welcome 2 my site! welcome, visitor | pet: puddle | sp: 41,178

the.star.chart

see how today's sky meets your birth chart! pop in your birth details and this page draws your chart, finds every way today's planets are talking to it, and (if you like) asks the stars for a write-up.

your birth details (click to open or change)

your birth details aren't stored anywhere. they stay in this browser tab (gone when you close it), never go in a web address, and all the chart math happens on your own computer. privacy

how this works

positions: calculated in your browser with astronomy-engine, an open-source astronomy library accurate to a fraction of an arcminute. checked against the swiss ephemeris (what most astrology sites use) to within 20 arcseconds.

conventions: western astrology, tropical zodiac. placidus houses, switching to whole sign houses above 66° latitude, where placidus can't be drawn. traditional rulers, plus the modern co-rulers pluto (scorpio), uranus (aquarius) and neptune (pisces). no birth time? you get a noon chart with no ascendant, midheaven or houses.

aspects: the five major ones, with these orbs (how far from exact still counts):

"building" and "fading": a building (applying) aspect is getting closer to exact; a fading (separating) one has passed. retrograde (R): a planet that looks like it's moving backward from earth.

birth place search: uses the geonames city list (about 170,000 towns), which comes with this site, so what you type never leaves your computer. historical time zones and daylight saving come from your browser's built-in time zone database.

positions are astronomically calculated; interpretations follow astrological tradition and are for reflection and fun.