Horoscope Calculator

Calculate a basic Sun sign and approximate rising sign using simplified orbital formulas. Not astrologically authoritative — demonstration only. Enter the LOCAL civil date/time and ensure the timezone offset matches that location at that date (accounting for DST).

Birth / Event Data
Algorithm: Simplified heliocentric Earth model + sidereal time → approximate rising sign. Source code in src/horoscope/horoscope.js. © NOVA Prototype.