{"success":true,"version":"v1","request":{"tool":"calculate_moon_phase","calculator_id":"moon-phase","inputs":{"date":"2026-09-24"},"request_id":"req_4323d8fb101e4f93aa48","received_at":"2026-09-24T01:52:08Z"},"result":{"entity_type":"calculation","id":"calc_moon-phase","calculator_id":"moon-phase","calculator_name":"Moon Phase Calculator","category":"time","status":"completed","values":{"phase_name":"Waxing Gibbous","illumination_percent":95,"age_days":12.65,"phase_fraction":0.428,"is_waxing":true,"next_new_moon_date":"2026-10-11","next_full_moon_date":"2026-09-26","days_until_next_full_moon":2.1},"units":{"illumination_percent":"%","age_days":"days","days_until_next_full_moon":"days"},"formula":"age = (JD(date 12:00 UTC) − 2451550.2597) mod 29.530588853; fraction = age / 29.530588853; illumination = (1 − cos(2π · fraction)) / 2; phase index = floor(((fraction + 1/16) mod 1) × 8)","notes":[],"summary":"Phase: Waxing Gibbous; Illuminated fraction: 95 %; Moon age: 12.65 days; Phase fraction: 0.428; Waxing: true; Next new moon: 2026-10-11; Next full moon: 2026-09-26; Days to next full moon: 2.1 days"},"warnings":[],"sources":[{"name":"USNO Astronomical Applications – Phases of the Moon","url":"https://aa.usno.navy.mil/data/MoonPhases","type":"government","retrieved_at":"2026-09-24"},{"name":"Lunar phase (Wikipedia)","url":"https://en.wikipedia.org/wiki/Lunar_phase","type":"reference","retrieved_at":"2026-09-24"},{"name":"Lunar month – synodic month 29.530588 days (Wikipedia)","url":"https://en.wikipedia.org/wiki/Lunar_month","type":"reference","retrieved_at":"2026-09-24"}],"freshness":{"type":"daily","max_age_seconds":86400,"note":"Depends on the current date unless the date is supplied."},"cache":{"hit":false,"cacheable":true,"deterministic":false,"max_age_seconds":86400,"note":"Depends on the current date (inputs left at their default 'today'); re-run when the date changes. Explicit inputs make it deterministic."},"timestamp":"2026-09-24T01:52:08Z","duration_ms":0,"next_actions":[{"tool":"calculate_sunrise_sunset","calculator_id":"sunrise-sunset","reason":"Sunrise and sunset for the same date and place.","url":"https://tttkmbb.com/api/v1/calculate/sunrise-sunset","docs":"https://tttkmbb.com/time/sunrise-sunset.md"},{"tool":"convert_julian_date","calculator_id":"julian-date","reason":"Julian Date used to count lunations.","url":"https://tttkmbb.com/api/v1/calculate/julian-date","docs":"https://tttkmbb.com/time/julian-date.md"},{"tool":"calculate_days_until","calculator_id":"days-until","reason":"Countdown to the next full moon date.","url":"https://tttkmbb.com/api/v1/calculate/days-until","docs":"https://tttkmbb.com/everyday/days-until.md"}],"links":{"self":"https://tttkmbb.com/api/v1/calculate/moon-phase?date=2026-09-24","html":"https://tttkmbb.com/time/moon-phase?date=2026-09-24","markdown":"https://tttkmbb.com/time/moon-phase.md","schema":"https://tttkmbb.com/api/v1/calculators/moon-phase","openapi":"https://tttkmbb.com/openapi.json","mcp":"https://tttkmbb.com/mcp","task":"https://tttkmbb.com/api/v1/tasks/task_eyJjIjoibW9vbi1waGFzZSIsImkiOnsiZGF0ZSI6IjIwMjYtMDktMjQifSwidCI6IjIwMjYtMDktMjRUMDE6NTI6MDhaIn0"}}