{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-11-26","schedule":[{"end":"2025-11-27T05:25Z","end_local":"07:25","hours":14.58,"mean_quality":0.0,"start":"2025-11-26T14:50Z","start_local":"16:50","target":null}],"targets":[{"best_window":null,"dec":-5.3876,"moon_separation":118.4,"name":"M42","quality_hours":0.02,"ra":83.8201,"resolved":{"common_name":"Great Orion Nebula","dec":-5.3876,"name":"M 42","ra":83.8201,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M42","source":"sesame","type":"HII","type_text":"HII region \u2014 a star-forming nebula"},"score":0,"score_astronomy":89,"score_weather":0,"transit":{"airmass":1.47,"alt":42.9,"az":180.7,"t":"2025-11-26T23:35Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2025-11-26T19:50Z","end_local":"21:50","hours":5.0,"label":"unusable","mean_quality":0.0,"start":"2025-11-26T14:50Z","start_local":"16:50"},{"end":"2025-11-26T20:00Z","end_local":"22:00","hours":0.17,"label":"poor","mean_quality":0.15,"start":"2025-11-26T19:50Z","start_local":"21:50"},{"end":"2025-11-27T05:25Z","end_local":"07:25","hours":9.42,"label":"unusable","mean_quality":0.0,"start":"2025-11-26T20:00Z","start_local":"22:00"}]}],"unscheduled":[{"name":"M42","why":"Overcast (\u226580 % cloud) for 11.9 of 13.5 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}