{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.74,"date":"2044-08-16","moon_free_dark_hours":1.82,"moon_illumination":44,"moon_separation":123.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"16:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.79,"date":"2044-08-17","moon_free_dark_hours":2.65,"moon_illumination":33,"moon_separation":109.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"16:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.85,"date":"2044-08-18","moon_free_dark_hours":3.7,"moon_illumination":22,"moon_separation":95.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"16:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.91,"date":"2044-08-19","moon_free_dark_hours":4.95,"moon_illumination":13,"moon_separation":80.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"16:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.97,"date":"2044-08-20","moon_free_dark_hours":6.32,"moon_illumination":6,"moon_separation":66.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.02,"date":"2044-08-21","moon_free_dark_hours":7.0,"moon_illumination":2,"moon_separation":51.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.08,"date":"2044-08-22","moon_free_dark_hours":7.07,"moon_illumination":0,"moon_separation":37.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.14,"date":"2044-08-23","moon_free_dark_hours":7.12,"moon_illumination":1,"moon_separation":23.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.2,"date":"2044-08-24","moon_free_dark_hours":7.18,"moon_illumination":5,"moon_separation":10.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.25,"date":"2044-08-25","moon_free_dark_hours":7.23,"moon_illumination":10,"moon_separation":9.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.31,"date":"2044-08-26","moon_free_dark_hours":7.3,"moon_illumination":18,"moon_separation":20.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.37,"date":"2044-08-27","moon_free_dark_hours":7.22,"moon_illumination":27,"moon_separation":32.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.42,"date":"2044-08-28","moon_free_dark_hours":6.78,"moon_illumination":36,"moon_separation":45.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.48,"date":"2044-08-29","moon_free_dark_hours":6.27,"moon_illumination":46,"moon_separation":57.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.54,"date":"2044-08-30","moon_free_dark_hours":5.63,"moon_illumination":55,"moon_separation":68.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.59,"date":"2044-08-31","moon_free_dark_hours":4.88,"moon_illumination":64,"moon_separation":80.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.65,"date":"2044-09-01","moon_free_dark_hours":4.0,"moon_illumination":73,"moon_separation":92.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.7,"date":"2044-09-02","moon_free_dark_hours":3.0,"moon_illumination":81,"moon_separation":104.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.76,"date":"2044-09-03","moon_free_dark_hours":1.97,"moon_illumination":88,"moon_separation":116.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"15:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.81,"date":"2044-09-04","moon_free_dark_hours":0.88,"moon_illumination":94,"moon_separation":128.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.87,"date":"2044-09-05","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":140.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.92,"date":"2044-09-06","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":152.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.98,"date":"2044-09-07","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":164.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.03,"date":"2044-09-08","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":173.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.09,"date":"2044-09-09","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":166.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.14,"date":"2044-09-10","moon_free_dark_hours":0.0,"moon_illumination":87,"moon_separation":153.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.19,"date":"2044-09-11","moon_free_dark_hours":0.12,"moon_illumination":79,"moon_separation":140.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.25,"date":"2044-09-12","moon_free_dark_hours":0.72,"moon_illumination":69,"moon_separation":126.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.3,"date":"2044-09-13","moon_free_dark_hours":1.48,"moon_illumination":58,"moon_separation":113.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.35,"date":"2044-09-14","moon_free_dark_hours":2.45,"moon_illumination":47,"moon_separation":99.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":50.1,"transit_local":"14:15","verdict":"unknown","weather_source":"none","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":"2044-08-16","target":{"dec":2.05238823,"morphology":"E3","name":"3C 273","ra":187.27791594,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=3C%20273","source":"sesame","type":"BLL","type_text":"BL Lac object \u2014 a blazar","vmag":14.83}}