{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.54,"date":"2044-06-09","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":144.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.52,"date":"2044-06-10","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":146.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.5,"date":"2044-06-11","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":144.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.48,"date":"2044-06-12","moon_free_dark_hours":0.0,"moon_illumination":95,"moon_separation":139.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.47,"date":"2044-06-13","moon_free_dark_hours":0.47,"moon_illumination":90,"moon_separation":132.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.46,"date":"2044-06-14","moon_free_dark_hours":0.95,"moon_illumination":84,"moon_separation":123.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.45,"date":"2044-06-15","moon_free_dark_hours":1.33,"moon_illumination":76,"moon_separation":114.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.44,"date":"2044-06-16","moon_free_dark_hours":1.7,"moon_illumination":68,"moon_separation":104.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.43,"date":"2044-06-17","moon_free_dark_hours":2.02,"moon_illumination":58,"moon_separation":94.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.42,"date":"2044-06-18","moon_free_dark_hours":2.33,"moon_illumination":48,"moon_separation":83.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.42,"date":"2044-06-19","moon_free_dark_hours":2.68,"moon_illumination":37,"moon_separation":72.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.42,"date":"2044-06-20","moon_free_dark_hours":3.08,"moon_illumination":27,"moon_separation":61.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.42,"date":"2044-06-21","moon_free_dark_hours":3.57,"moon_illumination":17,"moon_separation":51.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"13:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.43,"date":"2044-06-22","moon_free_dark_hours":4.18,"moon_illumination":9,"moon_separation":42.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.43,"date":"2044-06-23","moon_free_dark_hours":4.42,"moon_illumination":4,"moon_separation":35.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.44,"date":"2044-06-24","moon_free_dark_hours":4.43,"moon_illumination":1,"moon_separation":33.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.45,"date":"2044-06-25","moon_free_dark_hours":4.43,"moon_illumination":0,"moon_separation":37.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.46,"date":"2044-06-26","moon_free_dark_hours":4.45,"moon_illumination":4,"moon_separation":46.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.48,"date":"2044-06-27","moon_free_dark_hours":4.45,"moon_illumination":9,"moon_separation":56.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.49,"date":"2044-06-28","moon_free_dark_hours":4.12,"moon_illumination":17,"moon_separation":67.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.51,"date":"2044-06-29","moon_free_dark_hours":3.72,"moon_illumination":26,"moon_separation":79.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.53,"date":"2044-06-30","moon_free_dark_hours":3.35,"moon_illumination":37,"moon_separation":90.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.55,"date":"2044-07-01","moon_free_dark_hours":3.03,"moon_illumination":47,"moon_separation":101.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.58,"date":"2044-07-02","moon_free_dark_hours":2.7,"moon_illumination":57,"moon_separation":112.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.6,"date":"2044-07-03","moon_free_dark_hours":2.35,"moon_illumination":67,"moon_separation":121.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.63,"date":"2044-07-04","moon_free_dark_hours":1.95,"moon_illumination":76,"moon_separation":130.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.66,"date":"2044-07-05","moon_free_dark_hours":1.47,"moon_illumination":84,"moon_separation":138.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.69,"date":"2044-07-06","moon_free_dark_hours":0.88,"moon_illumination":90,"moon_separation":143.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.72,"date":"2044-07-07","moon_free_dark_hours":0.15,"moon_illumination":95,"moon_separation":146.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.75,"date":"2044-07-08","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":145.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:45","verdict":"unknown","weather_source":"none","weekday":"Fri"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2044-06-09","target":{"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"}}