Claude/astrology ephemeris integration 011 c utd dpp x8i bs6v vvf by cr #1
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- Set up Node.js/Express backend with Swiss Ephemeris integration - Implement natal chart calculation API endpoint - Calculate planet positions for Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, and North Node - Calculate house positions using Placidus system - Calculate Ascendant and MC (Midheaven) - Create responsive frontend interface with HTML/CSS/JS - Add Turkish language support for zodiac signs and planets - Include form for birth date, time, and location input - Display results with planet positions, houses, and key chart points
- Add TESTING.md with detailed test guide covering API, web interface, and automated tests - Add test-api.sh script for automated API testing with multiple scenarios - Include test cases for different years, locations, and error conditions - Add performance testing guidelines and troubleshooting section
- Implement Canvas-based chart drawing system - Add zodiac wheel with 12 signs and element colors (fire, earth, air, water) - Display planet symbols with Unicode characters - Calculate and draw aspects (conjunction, opposition, trine, square, sextile) - Show house divisions with Placidus system - Add ASC, MC, DSC, IC angle markers - Display degree markers on outer ring - Auto-adjust planet positions to prevent overlapping - Add responsive CSS styling for chart container - Integrate chart visualization into results display
- Replace colorful chart with clean, precise black-and-white line art - Add outer zodiac ring with 12 equal sectors and zodiac glyphs - Implement precise 360-degree scale with tick marks (major, medium, minor) - Position Aries at 9 o'clock with counter-clockwise zodiac progression - Add clearly defined zones: outer zodiac, degree scale, planet placement, house grid, aspect center - Emphasize four main angles (ASC, DSC, MC, IC) with bold lines and labeled boxes - Create planetary placement zone with dashed boundary indicators - Draw aspect lines in center with varying styles (solid/dashed) and transparency - Increase canvas resolution to 1000x1000 for sharper rendering - Maintain static zodiac reference frame while positioning houses/planets at absolute zodiac degrees
Backend changes: - Add timezone offset parameter to Julian date calculation - Convert local time to UTC using timezone offset - Include timezone info in API response Frontend changes: - Auto-detect user's timezone offset using JavaScript Date API - Send timezone offset to backend in API requests - Rotate entire chart so Ascendant (ASC) is fixed at 9 o'clock position (left/west) - Update zodiac ring rotation to be relative to ASC position - Update degree scale to rotate with ASC - Update house cusps positioning relative to ASC - Update planet placement relative to ASC - Update aspect lines to use ASC-relative positioning Chart rotation formula: canvasAngle = 180° - (zodiacDegree - ascDegree) This ensures ASC is always at the left (9 o'clock) position regardless of actual zodiac degree
Layout improvements: - Chart and data panel side-by-side in single screen view - Responsive: stacks vertically on smaller screens (<968px) - Optimized chart size (700x700) for better layout balance - Increased container max-width to 1400px Data display improvements: - Display planets with symbols: ☉♈27°04'09" format - Display houses with symbols: 1. Ev: ♍07°26'40" format - ASC and MC shown with zodiac symbols - Compact list view instead of grid cards - DMS (Degrees/Minutes/Seconds) format instead of decimal Symbol mappings: - Planets: ☉☽☿♀♂♃♄♅♆♇☊ - Zodiac: ♈♉♊♋♌♍♎♏♐♑♒♓ UI enhancements: - Cleaner, more professional appearance - Monospace font for data consistency - Hover effects on data items - Scrollable data panel for overflow - Better visual hierarchy with sections
Improvements: - Add min/max validation to coordinate inputs (-90/90 for lat, -180/180 for long) - Add console.log debugging to track form submissions and API responses - Add example coordinates for multiple cities (Istanbul, Ankara, Izmir, New York) - Improve form hints with clearer examples Testing confirmed: - Backend correctly calculates different results for different coordinates - Istanbul (41.0082, 28.9784): ASC = Sagittarius 24° - Ankara (39.9334, 32.8597): ASC = Sagittarius 28° - New York (40.7128, -74.0060): ASC = Libra 2° Debug features: - Console logs show submitted coordinates - Console logs show API response (ASC/MC degrees) - Helps users verify data is being sent/received correctly
Problem: - JavaScript getTimezoneOffset() returns CURRENT timezone offset - This causes errors for historical dates (daylight saving time changes) - Astro-seek comparison showed 8+ minute differences in planet positions Solution: 1. Added timezone dropdown selector with common timezones 2. Options include UTC+3 (Turkey standard), UTC+4 (Turkey DST), and others 3. "Auto" option uses birth date to calculate historical offset 4. Manual selection allows precise control for any location/era Timezone options: - UTC+3 (Türkiye - Standart) - UTC+4 (Türkiye - Yaz Saati Uygulandıysa) - UTC+2 (Doğu Avrupa) - UTC+0 (Londra) - UTC-5/-4 (New York) - UTC-8/-7 (Los Angeles) - Otomatik (Tarayıcı Tahmini) Notes: - Turkey's DST rules changed in 1996 - Historical timezone data may not be accurate in browsers - Manual selection recommended for pre-1996 Turkish births - Links to timeanddate.com for timezone verification
Problem solved: - JavaScript getTimezoneOffset() uses current timezone rules - For historical dates (like 1978), daylight saving rules were different - This caused 8-72 degree errors in ASC/MC calculations Solution: - Integrated Luxon (modern timezone library, pytz equivalent) - Changed timezone selector to IANA timezone names (Europe/Istanbul, etc.) - Luxon automatically applies date-specific timezone rules - Matches Python pytz behavior for historical accuracy Changes: - Added Luxon 3.4.4 CDN to index.html - Updated timezone selector with 12 major IANA zones - Replaced manual offset with Luxon DateTime conversion - Luxon calculates offset for specific date/time/timezone combo - Supports all historical DST (daylight saving time) changes Testing: - 1978-04-17 14:04 Europe/Istanbul → UTC 11:04 (matches astro-seek) - System now gives identical results to Python pytz implementation Benefits: - Accurate for any historical date - No manual timezone rule maintenance needed - Works for all global locations - Handles DST transitions automatically
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