{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-12-25","schedule":[{"end":"2025-12-26T05:50Z","end_local":"07:50","hours":14.92,"mean_quality":0.0,"start":"2025-12-25T14:55Z","start_local":"16:55","target":null}],"targets":[{"best_window":null,"dec":38.78368896,"moon_separation":74.7,"name":"Vega","quality_hours":0.05,"ra":279.23473479,"resolved":{"common_name":"Vega","dec":38.78368896,"name":"* alf Lyr","ra":279.23473479,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=Vega","source":"sesame","spectral_type":"A0V","type":"dS*","type_text":"delta Scuti variable","vmag":0.03},"score":1,"score_astronomy":9,"score_weather":7,"transit":{"airmass":1.0,"alt":87.1,"az":172.1,"t":"2025-12-25T10:40Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-12-26T04:10Z","end_local":"06:10","hours":13.25,"label":"unusable","mean_quality":0.0,"start":"2025-12-25T14:55Z","start_local":"16:55"},{"end":"2025-12-26T05:00Z","end_local":"07:00","hours":0.83,"label":"poor","mean_quality":0.06,"start":"2025-12-26T04:10Z","start_local":"06:10"},{"end":"2025-12-26T05:50Z","end_local":"07:50","hours":0.83,"label":"unusable","mean_quality":0.0,"start":"2025-12-26T05:00Z","start_local":"07:00"}]}],"unscheduled":[{"name":"Vega","why":"Overcast (\u226580 % cloud) for 12.8 of 13.8 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}