{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-11-20","schedule":[{"end":"2025-11-21T05:20Z","end_local":"07:20","hours":14.42,"mean_quality":0.0,"start":"2025-11-20T14:55Z","start_local":"16:55","target":null}],"targets":[{"best_window":null,"dec":22.71085365,"moon_separation":73.9,"name":"HD 189733","quality_hours":0.36,"ra":300.18213726,"resolved":{"dec":22.71085365,"name":"HD 189733","ra":300.18213726,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=HD%20189733","source":"sesame","spectral_type":"K2V","type":"BY*","type_text":"BY Draconis variable \u2014 a spotted, rotating star","vmag":7.648},"score":9,"score_astronomy":75,"score_weather":12,"transit":{"airmass":1.06,"alt":71.1,"az":181.1,"t":"2025-11-20T14:25Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-11-20T15:30Z","end_local":"17:30","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2025-11-20T14:55Z","start_local":"16:55"},{"end":"2025-11-20T16:00Z","end_local":"18:00","hours":0.5,"label":"poor","mean_quality":0.08,"start":"2025-11-20T15:30Z","start_local":"17:30"},{"end":"2025-11-20T18:00Z","end_local":"20:00","hours":2.0,"label":"unusable","mean_quality":0.0,"start":"2025-11-20T16:00Z","start_local":"18:00"},{"end":"2025-11-20T19:55Z","end_local":"21:55","hours":1.92,"label":"poor","mean_quality":0.17,"start":"2025-11-20T18:00Z","start_local":"20:00"},{"end":"2025-11-21T05:20Z","end_local":"07:20","hours":9.42,"label":"unusable","mean_quality":0.0,"start":"2025-11-20T19:55Z","start_local":"21:55"}]}],"unscheduled":[{"name":"HD 189733","why":"no usable window tonight"}],"warnings":[]}
