{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-01-31","schedule":[{"end":"2026-02-01T05:35Z","end_local":"07:35","hours":14.0,"mean_quality":0.0,"start":"2026-01-31T15:35Z","start_local":"17:35","target":null}],"targets":[{"best_window":null,"dec":41.26875,"moon_separation":89.2,"name":"M31","quality_hours":0.0,"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":0,"score_astronomy":41,"score_weather":0,"transit":{"airmass":1.0,"alt":89.5,"az":127.6,"t":"2026-01-31T14:20Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2026-02-01T05:35Z","end_local":"07:35","hours":14.0,"label":"unusable","mean_quality":0.0,"start":"2026-01-31T15:35Z","start_local":"17:35"}]}],"unscheduled":[{"name":"M31","why":"Overcast (\u226580 % cloud) for 13.0 of 13.0 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}