{"title":"Calculate house cusps","fields":[{"key":"date","name":"date","kind":"date","required":true,"description":"Birth date in YYYY-MM-DD format. Date is critical for house cusp calculations as it determines planetary positions used in some house systems.","example":"1990-07-15"},{"key":"time","name":"time","kind":"time","required":true,"description":"Birth time in 24-hour HH:MM:SS format. Time is ESSENTIAL for accurate house cusps - even minutes matter. The Ascendant (1st house cusp) changes roughly every 4 minutes. Without accurate time, house placements will be incorrect.","example":"14:30:00"},{"key":"latitude","name":"latitude","kind":"number","required":true,"description":"Birth location latitude in decimal degrees (-90 to 90). Location determines the local horizon and meridian, which are fundamental to house division. Higher latitudes cause more distortion in time-based systems like Placidus.","min":-90,"max":90,"example":40.7128},{"key":"longitude","name":"longitude","kind":"number","required":true,"description":"Birth location longitude in decimal degrees (-180 to 180). Affects local time and horizon calculations for house cusps.","min":-180,"max":180,"example":-74.006},{"key":"timezone","name":"timezone","kind":"number","required":true,"description":"Decimal hours from UTC (e.g. -5 for EST, 5.5 for IST, 9 for JST) OR IANA name (e.g. \"America/New_York\"). IANA resolved to the DST-correct offset for the chart date.","min":-14,"max":14,"example":-5},{"key":"houseSystem","name":"houseSystem","kind":"tiles","required":false,"description":"House system for dividing ecliptic into 12 houses. Placidus (most popular) uses time, Whole Sign (ancient) uses signs, Equal divides from Ascendant. Use \"all\" to compare all 4 systems side-by-side for educational purposes.","enum":["placidus","whole-sign","equal","koch"],"default":"placidus","example":"placidus"}],"hasLang":true}