{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-04-13","schedule":[{"end":"2026-04-14T03:45Z","end_local":"06:45","hours":10.83,"mean_quality":0.0,"start":"2026-04-13T16:55Z","start_local":"19:55","target":null}],"targets":[{"best_window":null,"dec":22.71085365,"moon_separation":49.5,"name":"HD 189733","quality_hours":0.0,"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":0,"score_astronomy":56,"score_weather":0,"transit":{"airmass":1.06,"alt":71.1,"az":181.2,"t":"2026-04-14T04:55Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2026-04-14T03:45Z","end_local":"06:45","hours":10.83,"label":"unusable","mean_quality":0.0,"start":"2026-04-13T16:55Z","start_local":"19:55"}]}],"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":[]}