{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-01-05","schedule":[{"end":"2026-01-06T05:50Z","end_local":"07:50","hours":14.83,"mean_quality":0.0,"start":"2026-01-05T15:00Z","start_local":"17:00","target":null}],"targets":[{"best_window":null,"dec":24.11388889,"moon_separation":79.5,"name":"M45","quality_hours":0.34,"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":6,"score_astronomy":100,"score_weather":6,"transit":{"airmass":1.05,"alt":72.5,"az":178.1,"t":"2026-01-05T19:05Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-01-05T23:00Z","end_local":"01:00","hours":8.0,"label":"unusable","mean_quality":0.0,"start":"2026-01-05T15:00Z","start_local":"17:00"},{"end":"2026-01-06T00:45Z","end_local":"02:45","hours":1.75,"label":"poor","mean_quality":0.19,"start":"2026-01-05T23:00Z","start_local":"01:00"},{"end":"2026-01-06T05:50Z","end_local":"07:50","hours":5.08,"label":"unusable","mean_quality":0.0,"start":"2026-01-06T00:45Z","start_local":"02:45"}]}],"unscheduled":[{"name":"M45","why":"Overcast (\u226580 % cloud) for 11.7 of 13.7 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}