{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.83,"best_label":"good","best_window":"05:20\u201306:10","dark_hours":11.22,"date":"2045-01-15","moon_free_dark_hours":11.2,"moon_illumination":5,"moon_separation":67.0,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":87.1,"transit_local":"11:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.92,"best_label":"good","best_window":"05:15\u201306:10","dark_hours":11.19,"date":"2045-01-16","moon_free_dark_hours":11.17,"moon_illumination":2,"moon_separation":65.6,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":87.1,"transit_local":"11:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.0,"best_label":"good","best_window":"05:10\u201306:10","dark_hours":11.17,"date":"2045-01-17","moon_free_dark_hours":11.15,"moon_illumination":0,"moon_separation":65.3,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":87.1,"transit_local":"11:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.0,"best_label":"good","best_window":"05:10\u201306:10","dark_hours":11.15,"date":"2045-01-18","moon_free_dark_hours":11.12,"moon_illumination":0,"moon_separation":66.1,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.1,"transit_local":"11:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.08,"best_label":"good","best_window":"05:05\u201306:10","dark_hours":11.12,"date":"2045-01-19","moon_free_dark_hours":11.1,"moon_illumination":3,"moon_separation":67.9,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":87.1,"transit_local":"11:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.17,"best_label":"good","best_window":"05:00\u201306:10","dark_hours":11.1,"date":"2045-01-20","moon_free_dark_hours":10.55,"moon_illumination":7,"moon_separation":70.8,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":87.1,"transit_local":"10:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.17,"best_label":"good","best_window":"04:55\u201306:05","dark_hours":11.07,"date":"2045-01-21","moon_free_dark_hours":9.48,"moon_illumination":12,"moon_separation":74.4,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":87.1,"transit_local":"10:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.17,"best_label":"good","best_window":"04:55\u201306:05","dark_hours":11.05,"date":"2045-01-22","moon_free_dark_hours":8.43,"moon_illumination":19,"moon_separation":78.8,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":87.1,"transit_local":"10:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.25,"best_label":"good","best_window":"04:50\u201306:05","dark_hours":11.02,"date":"2045-01-23","moon_free_dark_hours":7.38,"moon_illumination":27,"moon_separation":83.6,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":87.1,"transit_local":"10:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.33,"best_label":"good","best_window":"04:45\u201306:05","dark_hours":10.99,"date":"2045-01-24","moon_free_dark_hours":6.28,"moon_illumination":37,"moon_separation":88.8,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":87.1,"transit_local":"10:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.42,"best_label":"good","best_window":"04:40\u201306:05","dark_hours":10.96,"date":"2045-01-25","moon_free_dark_hours":5.15,"moon_illumination":47,"moon_separation":94.2,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":87.1,"transit_local":"10:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.5,"best_label":"good","best_window":"04:35\u201306:05","dark_hours":10.93,"date":"2045-01-26","moon_free_dark_hours":3.95,"moon_illumination":58,"moon_separation":99.5,"score":null,"score_astronomy":37,"score_weather":null,"transit_alt":87.1,"transit_local":"10:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.5,"best_label":"good","best_window":"04:35\u201306:05","dark_hours":10.9,"date":"2045-01-27","moon_free_dark_hours":2.68,"moon_illumination":68,"moon_separation":104.6,"score":null,"score_astronomy":39,"score_weather":null,"transit_alt":87.1,"transit_local":"10:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.5,"best_label":"good","best_window":"04:35\u201306:05","dark_hours":10.87,"date":"2045-01-28","moon_free_dark_hours":1.48,"moon_illumination":78,"moon_separation":109.0,"score":null,"score_astronomy":40,"score_weather":null,"transit_alt":87.1,"transit_local":"10:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.42,"best_label":"good","best_window":"04:35\u201306:00","dark_hours":10.84,"date":"2045-01-29","moon_free_dark_hours":0.37,"moon_illumination":87,"moon_separation":112.4,"score":null,"score_astronomy":37,"score_weather":null,"transit_alt":87.1,"transit_local":"10:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.42,"best_label":"good","best_window":"04:35\u201306:00","dark_hours":10.81,"date":"2045-01-30","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":114.4,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":87.1,"transit_local":"10:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.42,"best_label":"good","best_window":"04:35\u201306:00","dark_hours":10.78,"date":"2045-01-31","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":114.6,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":87.1,"transit_local":"10:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.5,"best_label":"good","best_window":"04:30\u201306:00","dark_hours":10.74,"date":"2045-02-01","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":112.9,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":87.1,"transit_local":"10:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.5,"best_label":"good","best_window":"04:30\u201306:00","dark_hours":10.71,"date":"2045-02-02","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":109.7,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":87.1,"transit_local":"10:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.42,"best_label":"good","best_window":"04:30\u201305:55","dark_hours":10.68,"date":"2045-02-03","moon_free_dark_hours":0.68,"moon_illumination":94,"moon_separation":105.2,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":87.1,"transit_local":"10:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.42,"best_label":"good","best_window":"04:30\u201305:55","dark_hours":10.64,"date":"2045-02-04","moon_free_dark_hours":1.93,"moon_illumination":87,"moon_separation":99.9,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":87.1,"transit_local":"09:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.5,"best_label":"good","best_window":"04:25\u201305:55","dark_hours":10.61,"date":"2045-02-05","moon_free_dark_hours":3.15,"moon_illumination":78,"moon_separation":94.2,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":87.1,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.67,"best_label":"good","best_window":"04:15\u201305:55","dark_hours":10.57,"date":"2045-02-06","moon_free_dark_hours":4.33,"moon_illumination":69,"moon_separation":88.6,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":87.1,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.75,"best_label":"good","best_window":"04:10\u201305:55","dark_hours":10.54,"date":"2045-02-07","moon_free_dark_hours":5.5,"moon_illumination":59,"moon_separation":83.2,"score":null,"score_astronomy":35,"score_weather":null,"transit_alt":87.1,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.83,"best_label":"good","best_window":"04:00\u201305:50","dark_hours":10.5,"date":"2045-02-08","moon_free_dark_hours":6.63,"moon_illumination":48,"moon_separation":78.3,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":87.1,"transit_local":"09:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.92,"best_label":"good","best_window":"03:55\u201305:50","dark_hours":10.46,"date":"2045-02-09","moon_free_dark_hours":7.68,"moon_illumination":39,"moon_separation":73.9,"score":null,"score_astronomy":42,"score_weather":null,"transit_alt":87.1,"transit_local":"09:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.17,"best_label":"good","best_window":"03:40\u201305:50","dark_hours":10.42,"date":"2045-02-10","moon_free_dark_hours":8.67,"moon_illumination":30,"moon_separation":70.3,"score":null,"score_astronomy":47,"score_weather":null,"transit_alt":87.1,"transit_local":"09:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.25,"best_label":"good","best_window":"03:35\u201305:50","dark_hours":10.39,"date":"2045-02-11","moon_free_dark_hours":9.53,"moon_illumination":21,"moon_separation":67.6,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":87.1,"transit_local":"09:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.33,"best_label":"good","best_window":"03:30\u201305:50","dark_hours":10.35,"date":"2045-02-12","moon_free_dark_hours":10.23,"moon_illumination":14,"moon_separation":65.9,"score":null,"score_astronomy":57,"score_weather":null,"transit_alt":87.1,"transit_local":"09:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.33,"best_label":"good","best_window":"03:25\u201305:45","dark_hours":10.31,"date":"2045-02-13","moon_free_dark_hours":10.3,"moon_illumination":8,"moon_separation":65.3,"score":null,"score_astronomy":58,"score_weather":null,"transit_alt":87.1,"transit_local":"09:20","verdict":"unknown","weather_source":"none","weekday":"Mon"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2045-01-15","target":{"common_name":"Vega","dec":38.78368896,"name":"* alf Lyr","ra":279.23473479,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=Vega","source":"sesame","spectral_type":"A0V","type":"dS*","type_text":"delta Scuti variable","vmag":0.03}}
