NOVA Horoscope

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

Date & Time (Local)

Timezone Offset (UTC)

Place of Birth (city, region)

Latitude (deg, +N)

Longitude (deg, +E)

Include bright star alignments Include planet list High precision planets Show sidereal zodiac (Lahiri)

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