{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-03-29","schedule":[{"end":"2025-03-30T04:10Z","end_local":"07:10","hours":11.5,"mean_quality":0.0,"start":"2025-03-29T16:40Z","start_local":"18:40","target":null}],"targets":[{"best_window":null,"dec":-5.3876,"moon_separation":70.6,"name":"M42","quality_hours":0.05,"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":1,"score_astronomy":17,"score_weather":6,"transit":{"airmass":1.47,"alt":42.9,"az":180.5,"t":"2025-03-29T15:30Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-03-29T17:15Z","end_local":"19:15","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2025-03-29T16:40Z","start_local":"18:40"},{"end":"2025-03-29T18:00Z","end_local":"20:00","hours":0.75,"label":"poor","mean_quality":0.07,"start":"2025-03-29T17:15Z","start_local":"19:15"},{"end":"2025-03-30T04:10Z","end_local":"07:10","hours":10.17,"label":"unusable","mean_quality":0.0,"start":"2025-03-29T18:00Z","start_local":"20:00"}]}],"unscheduled":[{"name":"M42","why":"Overcast (\u226580 % cloud) for 9.7 of 10.4 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}