{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-03-28","schedule":[{"end":"2026-03-29T04:10Z","end_local":"07:10","hours":11.5,"mean_quality":0.0,"start":"2026-03-28T16:40Z","start_local":"18:40","target":null}],"targets":[{"best_window":null,"dec":24.17805556,"moon_separation":78.3,"name":"M45","quality_hours":0.22,"ra":56.65833333,"resolved":{"common_name":"Seven Sisters","dec":24.17805556,"name":"Cl Melotte 22","ra":56.65833333,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M45","source":"sesame","type":"OpC","type_text":"open cluster"},"score":3,"score_astronomy":8,"score_weather":35,"transit":{"airmass":1.05,"alt":72.6,"az":179.8,"t":"2026-03-28T13:45Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-03-28T17:10Z","end_local":"19:10","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2026-03-28T16:40Z","start_local":"18:40"},{"end":"2026-03-28T19:25Z","end_local":"21:25","hours":2.25,"label":"poor","mean_quality":0.1,"start":"2026-03-28T17:10Z","start_local":"19:10"},{"end":"2026-03-29T04:10Z","end_local":"07:10","hours":8.75,"label":"unusable","mean_quality":0.0,"start":"2026-03-28T19:25Z","start_local":"21:25"}]}],"unscheduled":[{"name":"M45","why":"Overcast (\u226580 % cloud) for 7.7 of 10.6 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}