{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.45,"date":"2025-12-09","moon_free_dark_hours":3.52,"moon_illumination":70,"moon_separation":119.9,"score":0,"score_astronomy":100,"score_weather":0,"transit_alt":87.3,"transit_local":"16:05","verdict":"unusable","weather_source":"history","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.46,"date":"2025-12-10","moon_free_dark_hours":4.68,"moon_illumination":60,"moon_separation":122.1,"score":3,"score_astronomy":99,"score_weather":3,"transit_alt":87.3,"transit_local":"16:05","verdict":"poor","weather_source":"history","weekday":"Wed"},{"best_hours":3.08,"best_label":"good","best_window":"18:35\u201321:40","dark_hours":11.47,"date":"2025-12-11","moon_free_dark_hours":5.77,"moon_illumination":49,"moon_separation":122.5,"score":84,"score_astronomy":98,"score_weather":86,"transit_alt":87.3,"transit_local":"16:00","verdict":"good","weather_source":"history","weekday":"Thu"},{"best_hours":3.42,"best_label":"good","best_window":"18:35\u201322:00","dark_hours":11.47,"date":"2025-12-12","moon_free_dark_hours":6.83,"moon_illumination":40,"moon_separation":121.2,"score":94,"score_astronomy":97,"score_weather":97,"transit_alt":87.3,"transit_local":"15:55","verdict":"good","weather_source":"history","weekday":"Fri"},{"best_hours":0.42,"best_label":"good","best_window":"18:35\u201319:00","dark_hours":11.48,"date":"2025-12-13","moon_free_dark_hours":7.85,"moon_illumination":30,"moon_separation":118.4,"score":33,"score_astronomy":95,"score_weather":34,"transit_alt":87.3,"transit_local":"15:50","verdict":"poor","weather_source":"history","weekday":"Sat"},{"best_hours":3.42,"best_label":"good","best_window":"18:35\u201322:00","dark_hours":11.49,"date":"2025-12-14","moon_free_dark_hours":8.9,"moon_illumination":22,"moon_separation":114.4,"score":89,"score_astronomy":93,"score_weather":96,"transit_alt":87.3,"transit_local":"15:45","verdict":"good","weather_source":"history","weekday":"Sun"},{"best_hours":3.5,"best_label":"good","best_window":"18:35\u201322:05","dark_hours":11.49,"date":"2025-12-15","moon_free_dark_hours":9.95,"moon_illumination":15,"moon_separation":109.4,"score":91,"score_astronomy":91,"score_weather":100,"transit_alt":87.3,"transit_local":"15:45","verdict":"good","weather_source":"history","weekday":"Mon"},{"best_hours":3.42,"best_label":"good","best_window":"18:35\u201322:00","dark_hours":11.5,"date":"2025-12-16","moon_free_dark_hours":11.0,"moon_illumination":9,"moon_separation":103.8,"score":89,"score_astronomy":89,"score_weather":100,"transit_alt":87.3,"transit_local":"15:40","verdict":"good","weather_source":"history","weekday":"Tue"},{"best_hours":3.33,"best_label":"good","best_window":"18:35\u201321:55","dark_hours":11.5,"date":"2025-12-17","moon_free_dark_hours":11.48,"moon_illumination":4,"moon_separation":97.7,"score":85,"score_astronomy":87,"score_weather":98,"transit_alt":87.3,"transit_local":"15:35","verdict":"good","weather_source":"history","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.5,"date":"2025-12-18","moon_free_dark_hours":11.5,"moon_illumination":1,"moon_separation":91.4,"score":0,"score_astronomy":85,"score_weather":0,"transit_alt":87.3,"transit_local":"15:30","verdict":"unusable","weather_source":"history","weekday":"Thu"},{"best_hours":3.08,"best_label":"good","best_window":"18:35\u201321:40","dark_hours":11.51,"date":"2025-12-19","moon_free_dark_hours":11.48,"moon_illumination":0,"moon_separation":84.9,"score":77,"score_astronomy":82,"score_weather":94,"transit_alt":87.3,"transit_local":"15:25","verdict":"good","weather_source":"history","weekday":"Fri"},{"best_hours":0.42,"best_label":"good","best_window":"18:35\u201319:00","dark_hours":11.51,"date":"2025-12-20","moon_free_dark_hours":11.5,"moon_illumination":1,"moon_separation":78.6,"score":17,"score_astronomy":81,"score_weather":21,"transit_alt":87.3,"transit_local":"15:25","verdict":"poor","weather_source":"history","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.51,"date":"2025-12-21","moon_free_dark_hours":11.48,"moon_illumination":3,"moon_separation":72.6,"score":1,"score_astronomy":78,"score_weather":1,"transit_alt":87.3,"transit_local":"15:20","verdict":"poor","weather_source":"history","weekday":"Sun"},{"best_hours":1.42,"best_label":"good","best_window":"18:35\u201320:00","dark_hours":11.51,"date":"2025-12-22","moon_free_dark_hours":11.2,"moon_illumination":8,"moon_separation":67.1,"score":28,"score_astronomy":74,"score_weather":37,"transit_alt":87.3,"transit_local":"15:15","verdict":"poor","weather_source":"history","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.51,"date":"2025-12-23","moon_free_dark_hours":10.08,"moon_illumination":14,"moon_separation":62.5,"score":3,"score_astronomy":67,"score_weather":4,"transit_alt":87.3,"transit_local":"15:10","verdict":"poor","weather_source":"history","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.5,"date":"2025-12-24","moon_free_dark_hours":8.95,"moon_illumination":21,"moon_separation":59.2,"score":0,"score_astronomy":60,"score_weather":0,"transit_alt":87.3,"transit_local":"15:10","verdict":"unusable","weather_source":"history","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.5,"date":"2025-12-25","moon_free_dark_hours":7.82,"moon_illumination":30,"moon_separation":57.4,"score":0,"score_astronomy":52,"score_weather":0,"transit_alt":87.3,"transit_local":"15:05","verdict":"unusable","weather_source":"history","weekday":"Thu"},{"best_hours":1.33,"best_label":"marginal","best_window":"18:40\u201320:00","dark_hours":11.5,"date":"2025-12-26","moon_free_dark_hours":6.68,"moon_illumination":41,"moon_separation":57.5,"score":28,"score_astronomy":43,"score_weather":66,"transit_alt":87.3,"transit_local":"15:00","verdict":"poor","weather_source":"history","weekday":"Fri"},{"best_hours":2.08,"best_label":"good","best_window":"18:40\u201320:45","dark_hours":11.49,"date":"2025-12-27","moon_free_dark_hours":5.53,"moon_illumination":51,"moon_separation":59.6,"score":35,"score_astronomy":35,"score_weather":100,"transit_alt":87.3,"transit_local":"14:55","verdict":"poor","weather_source":"history","weekday":"Sat"},{"best_hours":2.33,"best_label":"marginal","best_window":"19:00\u201321:20","dark_hours":11.48,"date":"2025-12-28","moon_free_dark_hours":4.32,"moon_illumination":62,"moon_separation":63.6,"score":18,"score_astronomy":29,"score_weather":61,"transit_alt":87.3,"transit_local":"14:50","verdict":"poor","weather_source":"history","weekday":"Sun"},{"best_hours":2.83,"best_label":"marginal","best_window":"18:40\u201321:30","dark_hours":11.48,"date":"2025-12-29","moon_free_dark_hours":3.05,"moon_illumination":73,"moon_separation":69.2,"score":25,"score_astronomy":25,"score_weather":100,"transit_alt":87.3,"transit_local":"14:50","verdict":"poor","weather_source":"history","weekday":"Mon"},{"best_hours":1.33,"best_label":"marginal","best_window":"18:40\u201320:00","dark_hours":11.47,"date":"2025-12-30","moon_free_dark_hours":1.72,"moon_illumination":83,"moon_separation":76.1,"score":13,"score_astronomy":24,"score_weather":53,"transit_alt":87.3,"transit_local":"14:45","verdict":"poor","weather_source":"history","weekday":"Tue"},{"best_hours":1.25,"best_label":"marginal","best_window":"18:45\u201320:00","dark_hours":11.46,"date":"2025-12-31","moon_free_dark_hours":0.4,"moon_illumination":91,"moon_separation":83.8,"score":14,"score_astronomy":24,"score_weather":60,"transit_alt":87.3,"transit_local":"14:40","verdict":"poor","weather_source":"history","weekday":"Wed"},{"best_hours":0.67,"best_label":"good","best_window":"18:45\u201319:25","dark_hours":11.45,"date":"2026-01-01","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":91.8,"score":27,"score_astronomy":27,"score_weather":100,"transit_alt":87.3,"transit_local":"14:35","verdict":"poor","weather_source":"history","weekday":"Thu"},{"best_hours":0.92,"best_label":"good","best_window":"18:45\u201319:40","dark_hours":11.44,"date":"2026-01-02","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":99.8,"score":29,"score_astronomy":31,"score_weather":92,"transit_alt":87.3,"transit_local":"14:30","verdict":"poor","weather_source":"history","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.43,"date":"2026-01-03","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":107.3,"score":0,"score_astronomy":36,"score_weather":0,"transit_alt":87.3,"transit_local":"14:30","verdict":"unusable","weather_source":"history","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.42,"date":"2026-01-04","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":113.7,"score":0,"score_astronomy":39,"score_weather":0,"transit_alt":87.3,"transit_local":"14:25","verdict":"unusable","weather_source":"history","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.4,"date":"2026-01-05","moon_free_dark_hours":0.88,"moon_illumination":92,"moon_separation":118.6,"score":0,"score_astronomy":45,"score_weather":0,"transit_alt":87.3,"transit_local":"14:20","verdict":"unusable","weather_source":"history","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.39,"date":"2026-01-06","moon_free_dark_hours":2.1,"moon_illumination":84,"moon_separation":121.7,"score":0,"score_astronomy":44,"score_weather":0,"transit_alt":87.3,"transit_local":"14:15","verdict":"unusable","weather_source":"history","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.37,"date":"2026-01-07","moon_free_dark_hours":3.23,"moon_illumination":76,"moon_separation":122.8,"score":0,"score_astronomy":43,"score_weather":0,"transit_alt":87.3,"transit_local":"14:15","verdict":"unusable","weather_source":"history","weekday":"Wed"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2025-12-09","target":{"dec":44.25788576,"name":"EM* LkHA 190","ra":314.72388973,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=V1057%20Cyg","source":"sesame","spectral_type":"F7/G3I/IIe","type":"Or*","type_text":"Orion-type variable \u2014 a young, erupting star","vmag":12.33}}
