FreeAstroAPISun Sign Calculator API
Instantly calculate the exact position of the Sun for any date and location. Get sign, degree (0-360°), house placement, and professional interpretations.
Why use our Sun Sign API?
Stop using approximate date ranges. Calculate the True Solar Position with astronomical accuracy.
Cusp Handling
Born on the 20th or 21st? Standard dates fail here. We calculate the exact moment the Sun changes signs, handling "cusp" birthdays perfectly.
House Placement
Unlike basic calculators, we determine which House the Sun resides in (e.g., "Sun in 10th House"), adding depth to your analysis.
Interpretation
Get a ready-to-display paragraph explaining the Sun's position. Choose between "Classical Improved" (Modern) or "Poetic" styles.
Integration in Seconds
A lightweight, specialized endpoint designed for speed. Perfect for onboarding flows or daily horoscopes.
Absolute Position
Get abs_pos (0-360°) for easy aspect logic.
Timezone Aware
We handle UTC conversions automatically.
curl -X POST "https://api.freeastroapi.com/api/v1/western/signs/sun" \
-H "Content-Type: application/json" \
-H "x-api-key: YOUR_KEY" \
-d '{
"year": 1990,
"month": 5,
"day": 15,
"hour": 14,
"minute": 30,
"city": "New York",
"zodiac_type": "tropical",
"house_system": "placidus"
}'Frequently Asked Questions
How do you handle cusp dates?
"Cusps" are a myth caused by approximate dates. The Sun is always in exactly one sign at any given second. By using the exact birth time and location, our calculation engine determines the precise sign, eliminating ambiguity.
Can I get the house placement?
Yes. If you provide the birth time, we calculate the house (1-12) the Sun falls in. You can even specify the house system (Placidus, Whole Sign, etc.).
Is Sidereal Zodiac supported?
Absolutely. Just pass "zodiac_type": "sidereal" in your request to get Vedic/Sidereal positions.
Ready to Build?
Get your API key in seconds and start calculating accurate signs today.