{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-04-14","schedule":[{"end":"2025-04-15T03:45Z","end_local":"06:45","hours":10.75,"mean_quality":0.0,"start":"2025-04-14T17:00Z","start_local":"20:00","target":null}],"targets":[{"best_window":null,"dec":22.71085365,"moon_separation":87.3,"name":"HD 189733","quality_hours":0.13,"ra":300.18213726,"resolved":{"dec":22.71085365,"name":"HD 189733","ra":300.18213726,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=HD%20189733","source":"sesame","spectral_type":"K2V","type":"BY*","type_text":"BY Draconis variable \u2014 a spotted, rotating star","vmag":7.648},"score":2,"score_astronomy":32,"score_weather":7,"transit":{"airmass":1.06,"alt":71.1,"az":181.1,"t":"2025-04-15T04:50Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-04-14T23:20Z","end_local":"02:20","hours":6.33,"label":"unusable","mean_quality":0.0,"start":"2025-04-14T17:00Z","start_local":"20:00"},{"end":"2025-04-15T00:00Z","end_local":"03:00","hours":0.67,"label":"poor","mean_quality":0.19,"start":"2025-04-14T23:20Z","start_local":"02:20"},{"end":"2025-04-15T03:45Z","end_local":"06:45","hours":3.75,"label":"unusable","mean_quality":0.0,"start":"2025-04-15T00:00Z","start_local":"03:00"}]}],"unscheduled":[{"name":"HD 189733","why":"Overcast (\u226580 % cloud) for 8.7 of 9.8 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}