{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-03-30","schedule":[{"end":"2026-03-31T04:10Z","end_local":"07:10","hours":11.5,"mean_quality":0.0,"start":"2026-03-30T16:40Z","start_local":"19:40","target":null}],"targets":[{"best_window":null,"dec":-5.3876,"moon_separation":82.5,"name":"M42","quality_hours":0.01,"ra":83.8201,"resolved":{"common_name":"Great Orion Nebula","dec":-5.3876,"name":"M 42","ra":83.8201,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M42","source":"sesame","type":"HII","type_text":"HII region \u2014 a star-forming nebula"},"score":0,"score_astronomy":6,"score_weather":3,"transit":{"airmass":1.47,"alt":42.9,"az":179.8,"t":"2026-03-30T15:25Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2026-03-30T19:00Z","end_local":"22:00","hours":2.33,"label":"unusable","mean_quality":0.0,"start":"2026-03-30T16:40Z","start_local":"19:40"},{"end":"2026-03-30T19:15Z","end_local":"22:15","hours":0.25,"label":"poor","mean_quality":0.06,"start":"2026-03-30T19:00Z","start_local":"22:00"},{"end":"2026-03-31T04:10Z","end_local":"07:10","hours":8.92,"label":"unusable","mean_quality":0.0,"start":"2026-03-30T19:15Z","start_local":"22:15"}]}],"unscheduled":[{"name":"M42","why":"Overcast (\u226580 % cloud) for 9.4 of 10.4 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}