Udaya Lagna Calculator -

// initial load demo for Mumbai (async () => const initCity = cityInput.value; const coords = await geocodeCity(initCity); if(coords) currentCoords = coords; latField.value = coords.lat.toFixed(4); lonField.value = coords.lon.toFixed(4); )();

<!-- Astronomical library for precise planetary positions --> <script src="https://cdn.jsdelivr.net/npm/astronomia@4.0.2/astronomia.min.js"></script> <script> // Wait for library + DOM window.addEventListener('DOMContentLoaded', () => // Helper: Geocode city using OpenStreetMap Nominatim (free, no key) async function geocodeCity(city) if (!city.trim()) return null; try const resp = await fetch( https://nominatim.openstreetmap.org/search?q=$encodeURIComponent(city)&format=json&limit=1 ); const data = await resp.json(); if (data && data.length) return lat: parseFloat(data[0].lat), lon: parseFloat(data[0].lon) ;

This is an excellent request, as (also known as the Rising Sign or Ascendant ) is the most fundamental pillar of Vedic astrology (Jyotish).

// Update lat/lon fields when city changes const cityInput = document.getElementById('cityName'); const latField = document.getElementById('lat'); const lonField = document.getElementById('lon'); let currentCoords = null;

// Zodiac sign name from 0° Aries (0 = Aries ... 11 = Pisces) const zodiacSigns = [ "Mesha (Aries)", "Vrishabha (Taurus)", "Mithuna (Gemini)", "Karka (Cancer)", "Simha (Leo)", "Kanya (Virgo)", "Tula (Libra)", "Vrishchika (Scorpio)", "Dhanu (Sagittarius)", "Makara (Capricorn)", "Kumbha (Aquarius)", "Meena (Pisces)" ]; const lords = ["Mars", "Venus", "Mercury", "Moon", "Sun", "Mercury", "Venus", "Mars", "Jupiter", "Saturn", "Saturn", "Jupiter"];

function getSignAndDegree(siderealDeg) let signIndex = Math.floor(siderealDeg / 30); let degInSign = siderealDeg - (signIndex * 30); return sign: zodiacSigns[signIndex], deg: degInSign.toFixed(2), lord: lords[signIndex] ;