{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-09-29","schedule":[{"end":"2025-09-30T04:20Z","end_local":"07:20","hours":12.25,"mean_quality":0.0,"start":"2025-09-29T16:05Z","start_local":"19:05","target":null}],"targets":[{"best_window":null,"dec":41.26875,"moon_separation":110.8,"name":"M31","quality_hours":0.32,"ra":10.68470833,"resolved":{"common_name":"Andromeda Galaxy","dec":41.26875,"morphology":"SA(s)b","name":"M 31","ra":10.68470833,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M31","source":"sesame","type":"AGN","type_text":"galaxy with an active nucleus","vmag":3.44},"score":4,"score_astronomy":100,"score_weather":4,"transit":{"airmass":1.0,"alt":89.7,"az":199.6,"t":"2025-09-29T22:30Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-09-30T02:00Z","end_local":"05:00","hours":9.92,"label":"unusable","mean_quality":0.0,"start":"2025-09-29T16:05Z","start_local":"19:05"},{"end":"2025-09-30T03:50Z","end_local":"06:50","hours":1.83,"label":"poor","mean_quality":0.18,"start":"2025-09-30T02:00Z","start_local":"05:00"},{"end":"2025-09-30T04:20Z","end_local":"07:20","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-09-30T03:50Z","start_local":"06:50"}]}],"unscheduled":[{"name":"M31","why":"Overcast (\u226580 % cloud) for 9.4 of 11.3 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}