{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-02-23","schedule":[{"end":"2026-02-24T05:05Z","end_local":"07:05","hours":13.08,"mean_quality":0.0,"start":"2026-02-23T16:00Z","start_local":"18:00","target":null}],"targets":[{"best_window":null,"dec":24.11388889,"moon_separation":2.3,"name":"M45","quality_hours":0.19,"ra":56.60083333,"resolved":{"common_name":"Seven Sisters","dec":24.11388889,"name":"Cl Melotte 22","ra":56.60083333,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M45","source":"sesame","type":"OpC","type_text":"open cluster"},"score":3,"score_astronomy":44,"score_weather":7,"transit":{"airmass":1.05,"alt":72.5,"az":180.2,"t":"2026-02-23T15:55Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-02-23T16:35Z","end_local":"18:35","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2026-02-23T16:00Z","start_local":"18:00"},{"end":"2026-02-23T18:00Z","end_local":"20:00","hours":1.42,"label":"poor","mean_quality":0.14,"start":"2026-02-23T16:35Z","start_local":"18:35"},{"end":"2026-02-24T05:05Z","end_local":"07:05","hours":11.08,"label":"unusable","mean_quality":0.0,"start":"2026-02-23T18:00Z","start_local":"20:00"}]}],"unscheduled":[{"name":"M45","why":"Overcast (\u226580 % cloud) for 9.7 of 12.1 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}