/* Reset default styles to align with GeneratePress */ * { margin: 0; padding: 0; box-sizing: border-box; } /* Calculator container */ .synastry-calculator { max-width: 900px; margin: 20px auto; padding: 20px; background-color: #ffffff; border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); font-family: -apple-system, BlinkMacSystemFont, ‘Segoe UI’, Roboto, Oxygen, Ubuntu, Cantarell, sans-serif; } /* Heading */ .synastry-calculator h2 { font-size: 1.8em; margin-bottom: 20px; color: #333; text-align: center; } /* Form styling */ .synastry-calculator form { display: grid; gap: 15px; } /* Person sections */ .person-section { border: 1px solid #ddd; padding: 15px; border-radius: 4px; } .person-section h3 { font-size: 1.2em; margin-bottom: 10px; color: #333; } /* Input groups */ .input-group { display: flex; flex-direction: column; gap: 5px; } .input-group label { font-size: 1em; color: #555; } .input-group input, .input-group select { padding: 10px; font-size: 1em; border: 1px solid #ddd; border-radius: 4px; transition: border-color 0.3s ease; } .input-group input:focus, .input-group select:focus { border-color: #0073aa; outline: none; } /* Error message */ .error { color: #d32f2f; font-size: 0.9em; display: none; } /* Button */ .calculate-btn { background-color: #0073aa; color: #fff; padding: 12px; border: none; border-radius: 4px; font-size: 1.1em; cursor: pointer; transition: background-color 0.3s ease; } .calculate-btn:hover { background-color: #005f8b; } /* Results section */ .results { margin-top: 20px; padding: 15px; background-color: #f9f9f9; border-radius: 4px; display: none; } .results h3 { font-size: 1.3em; margin-bottom: 10px; color: #333; } .results p { font-size: 1em; color: #555; margin-bottom: 8px; } /* Chart section */ .chart-container { margin-top: 20px; padding: 15px; background-color: #f9f9f9; border-radius: 4px; } .chart-container h3 { font-size: 1.3em; margin-bottom: 10px; color: #333; text-align: center; } /* Placeholder graphics for zodiac signs */ .zodiac-graphic { width: 40px; height: 40px; border-radius: 50%; margin: 10px auto; background: linear-gradient(45deg, #00ccff, #0066cc); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: bold; font-size: 0.9em; } /* Responsive design */ @media (max-width: 480px) { .synastry-calculator { margin: 10px; padding: 15px; } .synastry-calculator h2 { font-size: 1.5em; } .calculate-btn { font-size: 1em; } .chart-container { padding: 10px; } } // City coordinates lookup const cityCoordinates = { ‘New York, NY, USA’: { lat: 40.7128, lon: -74.0060 }, ‘London, UK’: { lat: 51.5074, lon: -0.1278 }, ‘Mumbai, India’: { lat: 19.0760, lon: 72.8777 }, ‘Tokyo, Japan’: { lat: 35.6762, lon: 139.6503 }, ‘Sydney, Australia’: { lat: -33.8688, lon: 151.2093 } }; // Zodiac signs const zodiacSigns = [ ‘Aries’, ‘Taurus’, ‘Gemini’, ‘Cancer’, ‘Leo’, ‘Virgo’, ‘Libra’, ‘Scorpio’, ‘Sagittarius’, ‘Capricorn’, ‘Aquarius’, ‘Pisces’ ]; // Planet descriptions const planetDescriptions = { Sun: ‘Core identity and life purpose., Moon: ‘Emotions and subconscious needs.’, Mercury: ‘Communication and intellect.’, Venus: ‘Love, beauty, and relationships.’, Mars: ‘Energy, passion, and drive.’ }; // Simplified zodiac sign approximation based on birth date function getApproximateZodiacSign(date, planet) { const month = date.getMonth(); // 0-11 const day = date.getDate(); const sunSignRanges = [ { sign: ‘Capricorn’, start: { month: 0, day: 1 }, end: { month: 0, day: 19 } }, { sign: ‘Aquarius’, start: { month: 0, day: 20 }, end: { month: 1, day: 18 } }, { sign: ‘Pisces’, start: { month: 1, day: 19 }, end: { month: 2, day: 20 } }, { sign: ‘Aries’, start: { month: 2, day: 21 }, end: { month: 3, day: 19 } }, { sign: ‘Taurus’, start: { month: 3, day: 20 }, end: { month: 4, day: 20 } }, { sign: ‘Gemini’, start: { month: 4, day: 21 }, end: { month: 5, day: 20 } }, { sign: ‘Cancer’, start: { month: 5, day: 21 }, end: { month: 6, day: 22 } }, { sign: ‘Leo’, start: { month: 6, day: 23 }, end: { month: 7, day: 22 } }, { sign: ‘Virgo’, start: { month: 7, day: 23 }, end: { month: 8, day: 22 } }, { sign: ‘Libra’, start: { month: 8, day: 23 }, end: { month: 9, day: 22 } }, { sign: ‘Scorpio’, start: { month: 9, day: 23 }, end: { month: 10, day: 21 } }, { sign: ‘Sagittarius’, start: { month: 10, day: 22 }, end: { month: 11, day: 21 } }, { sign: ‘Capricorn’, start: { month: 11, day: 22 }, end: { month: 11, day: 31 } } ]; const planetOffsets = { Sun: 0, Moon: (month + day / 30) % 12, Mercury: (month + 1) % 12, Venus: (month + 2) % 12, Mars: (month + 3) % 12 }; if (planet === ‘Sun’) { for (const range of sunSignRanges) { const startDate = new Date(date.getFullYear(), range.start.month, range.start.day); const endDate = new Date(date.getFullYear(), range.end.month, range.end.day); if (date >= startDate && date { const sign1 = pos1.find(p => p.planet === planet).sign; const sign2 = pos2.find(p => p.planet === planet).sign; const index1 = zodiacSigns.indexOf(sign1); const index2 = zodiacSigns.indexOf(sign2); const diff = Math.abs(index1 – index2) % 12; // Simplified aspect detection if (diff === 0) { score += 20; // Conjunction aspects.push(`${planet} conjunction: Strong harmony in ${planetDescriptions[planet].toLowerCase()}.`); } else if (diff === 6) { score += 10; // Opposition aspects.push(`${planet} opposition: Dynamic tension in ${planetDescriptions[planet].toLowerCase()}.`); } else if (diff === 4 || diff === 8) { score += 15; // Square aspects.push(`${planet} square: Challenges in ${planetDescriptions[planet].toLowerCase()}.`); } else if (diff === 3 || diff === 9) { score += 15; // Trine aspects.push(`${planet} trine: Easy flow in ${planetDescriptions[planet].toLowerCase()}.`); } else if (diff === 2 || diff === 10) { score += 10; // Sextile aspects.push(`${planet} sextile: Supportive energy in ${planetDescriptions[planet].toLowerCase()}.`); } }); return { score: Math.min(score, 100), aspects }; } // Initialize chart let synastryChart = null; function initializeChart(pos1, pos2) { const ctx = document.getElementById(‘synastry-chart’).getContext(‘2d’); if (synastryChart) synastryChart.destroy(); const zodiacCounts1 = zodiacSigns.reduce((acc, sign) => ({ …acc, [sign]: 0 }), {}); const zodiacCounts2 = zodiacSigns.reduce((acc, sign) => ({ …acc, [sign]: 0 }), {}); pos1.forEach(pos => zodiacCounts1[pos.sign]++); pos2.forEach(pos => zodiacCounts2[pos.sign]++); synastryChart = new Chart(ctx, { type: ‘radar’, data: { labels: zodiacSigns, datasets: [ { label: ‘Person 1’, data: zodiacSigns.map(sign => zodiacCounts1[sign]), backgroundColor: ‘rgba(0, 115, 170, 0.2)’, borderColor: ‘#0073aa’, borderWidth: 2 }, { label: ‘Person 2’, data: zodiacSigns.map(sign => zodiacCounts2[sign]), backgroundColor: ‘rgba(255, 99, 132, 0.2)’, borderColor: ‘#ff6384’, borderWidth: 2 } ] }, options: { responsive: true, scales: { r: { beginAtZero: true, max: Math.max(…Object.values(zodiacCounts1), …Object.values(zodiacCounts2)) + 1 } }, plugins: { legend: { position: ‘top’ }, tooltip: { callbacks: { label: function(context) { return `${context.dataset.label}: ${context.raw} planets in ${context.label}`; } } } } } }); } // Calculate synastry document.getElementById(‘calculate-btn’).addEventListener(‘click’, function() { console.log(‘Calculate button clicked’); calculateSynastry(); }); function calculateSynastry() { console.log(‘Starting calculation’); const p1BirthDate = document.getElementById(‘p1-birth-date’).value; const p1BirthTime = document.getElementById(‘p1-birth-time’).value; const p1BirthPlace = document.getElementById(‘p1-birth-place’).value; const p2BirthDate = document.getElementById(‘p2-birth-date’).value; const p2BirthTime = document.getElementById(‘p2-birth-time’).value; const p2BirthPlace = document.getElementById(‘p2-birth-place’).value; // Validate inputs if (!p1BirthDate || !p1BirthTime || !p1BirthPlace || !p2BirthDate || !p2BirthTime || !p2BirthPlace) { console.log(‘Invalid input detected’); document.getElementById(‘error-message’).style.display = ‘block’; document.getElementById(‘results’).style.display = ‘none’; return; } else { document.getElementById(‘error-message’).style.display = ‘none’; } // Parse birth details const p1Birth = new Date(`${p1BirthDate}T${p1BirthTime}`); const p2Birth = new Date(`${p2BirthDate}T${p2BirthTime}`); const planets = [‘Sun’, ‘Moon’, ‘Mercury’, ‘Venus’, ‘Mars’]; // Calculate planetary positions const p1Positions = planets.map(planet => ({ planet, sign: getApproximateZodiacSign(p1Birth, planet), description: planetDescriptions[planet] })); const p2Positions = planets.map(planet => ({ planet, sign: getApproximateZodiacSign(p2Birth, planet), description: planetDescriptions[planet] })); // Calculate compatibility const { score, aspects } = calculateCompatibility(p1Positions, p2Positions); // Display results document.getElementById(‘compatibility-score’).textContent = `Compatibility Score: ${score}% (Higher scores indicate better compatibility)`; // Person 1 positions const p1Container = document.getElementById(‘p1-positions’); p1Container.innerHTML = `

Person 1: ${p1BirthDate}, ${p1BirthTime}, ${p1BirthPlace} (Lat: ${cityCoordinates[p1BirthPlace].lat}, Lon: ${cityCoordinates[p1BirthPlace].lon})

`; p1Positions.forEach(pos => { const graphic = ``; const item = document.createElement(‘div’); item.innerHTML = ` ${graphic}

${pos.planet}: ${pos.sign}

Description: ${pos.description}

`; p1Container.appendChild(item); }); // Person 2 positions const p2Container = document.getElementById(‘p2-positions’); p2Container.innerHTML = `

Person 2: ${p2BirthDate}, ${p2BirthTime}, ${p2BirthPlace} (Lat: ${cityCoordinates[p2BirthPlace].lat}, Lon: ${cityCoordinates[p2BirthPlace].lon})

`; p2Positions.forEach(pos => { const graphic = ``; const item = document.createElement(‘div’); item.innerHTML = ` ${graphic}

${pos.planet}: ${pos.sign}

Description: ${pos.description}

`; p2Container.appendChild(item); }); // Aspect analysis const aspectContainer = document.getElementById(‘aspect-analysis’); aspectContainer.innerHTML = ‘

Key Aspects

‘; aspects.forEach(aspect => { const p = document.createElement(‘p’); p.textContent = aspect; aspectContainer.appendChild(p); }); document.getElementById(‘results’).style.display = ‘block’; // Initialize chart initializeChart(p1Positions, p2Positions); console.log(‘Calculation completed, results and chart displayed’); }

Synastry Chart (Compatibility Calculator) – Decode Relationship Chemistry Through Astrology

Ever wondered why some relationships click instantly while others feel like a constant tug-of-war? The answer might lie in your synastry chart. In astrology, synastry is the art and science of comparing two birth charts to evaluate relationship compatibility. It’s a powerful tool that goes beyond surface-level attraction and dives into the emotional, mental, and spiritual dynamics between two individuals.

A Synastry Chart Compatibility Calculator simplifies this process, allowing anyone—from seasoned astrologers to curious lovebirds—to explore their relationship dynamics in depth. Whether you’re exploring a budding romance, evaluating a long-term partnership, or even assessing business collaborations, synastry provides valuable insights that can help you navigate the emotional terrain of human connection.

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Introduction to Synastry in Astrology

What is a Synastry Chart?

A synastry chart is essentially a comparison of two natal charts layered on top of one another. It shows how one person’s planets interact with another’s, highlighting areas of harmony, tension, passion, and growth. By analyzing these planetary interactions, astrologers can determine how two people relate emotionally, mentally, and even physically.

Unlike a composite chart—which merges two charts into a single one to represent the relationship itself—synastry focuses on the individual dynamics each person brings to the relationship. It’s about understanding how you affect each other, not just what you create together.

Each connection between planets (known as aspects) plays a unique role. Some aspects indicate instant attraction, deep emotional bonding, or shared life goals. Others might point to power struggles, misunderstandings, or emotional friction. A synastry chart brings all these dynamics to light.

Why Compatibility Matters in Astrology

Compatibility isn’t just about zodiac signs—it’s about how your energies blend or clash. While pop astrology loves to match sun signs (like Leo with Sagittarius or Taurus with Virgo), real astrological compatibility is far more nuanced. The Moon (emotions), Venus (love), Mars (desire), Mercury (communication), and Saturn (commitment) all play significant roles.

For instance, you might have great sexual chemistry with someone (Mars-Venus), but struggle to communicate effectively (Mercury square Mercury). Or perhaps your emotional needs (Moon) don’t align at all, making it hard to find emotional safety in the relationship.

Knowing these details empowers you to understand your partner better, have realistic expectations, and improve communication. It can even explain recurring relationship patterns and help you grow through them. Whether the connection is romantic, platonic, familial, or professional, a synastry chart helps you unlock a deeper level of empathy and awareness.

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The Fundamentals of Synastry Charts

How Synastry Charts Are Created

Creating a synastry chart involves comparing two birth charts side by side. This means you need complete natal data for both individuals: date of birth, exact time of birth, and place of birth. Once these are entered into a synastry calculator or astrology software, the system generates a chart that overlays one person’s planetary placements onto the other’s chart.

Here’s what gets analyzed:

• Planetary positions in both charts
• Aspects (angles) between the planets
• Inter-house placements (e.g., your Sun in their 7th house)
• Element and modality compatibility
• Nodes and outer planets for karmic influences

A well-calculated synastry chart can uncover the soul-level connections and possible karmic debts between two people. The more accurate the birth data, the more precise the analysis.

Key Elements Considered in Compatibility Analysis

There are several core elements astrologers look at when evaluating synastry:

1. Sun-Moon Interactions – Represent the core self and emotional compatibility.
2. Venus-Mars Connections – Highlight physical attraction and romantic chemistry.
3. Mercury Aspects – Reveal how well the couple communicates.
4. Saturn Aspects – Indicate stability, long-term potential, and karmic lessons.
5. Jupiter Aspects – Reflect shared values and mutual growth.
6. Outer Planets (Uranus, Neptune, Pluto) – Speak to deep transformation, illusion, or disruption.

Each of these planetary interactions tells a different story. For example, Venus conjunct Mars usually signals strong romantic and physical attraction. Saturn square Moon, however, might point to emotional suppression or dependency.

The Role of Birth Time and Accuracy

The importance of accurate birth time in synastry cannot be overstated. Even a 15-minute difference can shift the Ascendant and house placements significantly, altering the interpretation of aspects and their influence. Some synastry insights—like one partner’s planet falling into another’s 7th house (relationships)—are completely dependent on exact timing.

Without a precise birth time, astrologers can still evaluate planetary aspects, but they lose the nuance of house overlays and Ascendant interactions. That said, even a general synastry chart can provide meaningful information if the birth date and place are known.