{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.25,"best_label":"good","best_window":"05:55\u201306:10","dark_hours":11.34,"date":"2047-01-09","moon_free_dark_hours":0.0,"moon_illumination":95,"moon_separation":113.4,"score":null,"score_astronomy":13,"score_weather":null,"transit_alt":87.1,"transit_local":"11:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.25,"best_label":"good","best_window":"05:55\u201306:10","dark_hours":11.33,"date":"2047-01-10","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":116.2,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":87.1,"transit_local":"11:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.33,"best_label":"good","best_window":"05:50\u201306:10","dark_hours":11.31,"date":"2047-01-11","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":117.7,"score":null,"score_astronomy":15,"score_weather":null,"transit_alt":87.1,"transit_local":"11:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.33,"best_label":"good","best_window":"05:50\u201306:10","dark_hours":11.29,"date":"2047-01-12","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":117.5,"score":null,"score_astronomy":16,"score_weather":null,"transit_alt":87.1,"transit_local":"11:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.42,"best_label":"good","best_window":"05:45\u201306:10","dark_hours":11.27,"date":"2047-01-13","moon_free_dark_hours":0.23,"moon_illumination":96,"moon_separation":115.5,"score":null,"score_astronomy":16,"score_weather":null,"transit_alt":87.1,"transit_local":"11:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.42,"best_label":"good","best_window":"05:45\u201306:10","dark_hours":11.25,"date":"2047-01-14","moon_free_dark_hours":1.43,"moon_illumination":90,"moon_separation":112.0,"score":null,"score_astronomy":16,"score_weather":null,"transit_alt":87.1,"transit_local":"11:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.5,"best_label":"good","best_window":"05:40\u201306:10","dark_hours":11.23,"date":"2047-01-15","moon_free_dark_hours":2.63,"moon_illumination":82,"moon_separation":107.1,"score":null,"score_astronomy":16,"score_weather":null,"transit_alt":87.1,"transit_local":"11:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.5,"best_label":"good","best_window":"05:40\u201306:10","dark_hours":11.21,"date":"2047-01-16","moon_free_dark_hours":3.83,"moon_illumination":72,"moon_separation":101.3,"score":null,"score_astronomy":17,"score_weather":null,"transit_alt":87.1,"transit_local":"11:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.58,"best_label":"good","best_window":"05:35\u201306:10","dark_hours":11.18,"date":"2047-01-17","moon_free_dark_hours":5.05,"moon_illumination":61,"moon_separation":95.0,"score":null,"score_astronomy":18,"score_weather":null,"transit_alt":87.1,"transit_local":"11:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.75,"best_label":"good","best_window":"05:25\u201306:10","dark_hours":11.16,"date":"2047-01-18","moon_free_dark_hours":6.28,"moon_illumination":50,"moon_separation":88.4,"score":null,"score_astronomy":20,"score_weather":null,"transit_alt":87.1,"transit_local":"11:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.83,"best_label":"good","best_window":"05:20\u201306:10","dark_hours":11.13,"date":"2047-01-19","moon_free_dark_hours":7.52,"moon_illumination":39,"moon_separation":81.9,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":87.1,"transit_local":"11:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.0,"best_label":"good","best_window":"05:10\u201306:10","dark_hours":11.11,"date":"2047-01-20","moon_free_dark_hours":8.72,"moon_illumination":28,"moon_separation":75.9,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":87.1,"transit_local":"10:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.0,"best_label":"good","best_window":"05:05\u201306:05","dark_hours":11.08,"date":"2047-01-21","moon_free_dark_hours":9.83,"moon_illumination":19,"moon_separation":70.6,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":87.1,"transit_local":"10:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.17,"best_label":"good","best_window":"04:55\u201306:05","dark_hours":11.06,"date":"2047-01-22","moon_free_dark_hours":10.8,"moon_illumination":11,"moon_separation":66.4,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":87.1,"transit_local":"10:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.25,"best_label":"good","best_window":"04:50\u201306:05","dark_hours":11.03,"date":"2047-01-23","moon_free_dark_hours":11.02,"moon_illumination":5,"moon_separation":63.6,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":87.1,"transit_local":"10:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.33,"best_label":"good","best_window":"04:45\u201306:05","dark_hours":11.0,"date":"2047-01-24","moon_free_dark_hours":11.0,"moon_illumination":1,"moon_separation":62.3,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":87.1,"transit_local":"10:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.33,"best_label":"good","best_window":"04:45\u201306:05","dark_hours":10.98,"date":"2047-01-25","moon_free_dark_hours":10.97,"moon_illumination":0,"moon_separation":62.6,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":87.1,"transit_local":"10:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.42,"best_label":"good","best_window":"04:40\u201306:05","dark_hours":10.95,"date":"2047-01-26","moon_free_dark_hours":10.92,"moon_illumination":1,"moon_separation":64.4,"score":null,"score_astronomy":37,"score_weather":null,"transit_alt":87.1,"transit_local":"10:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.5,"best_label":"good","best_window":"04:35\u201306:05","dark_hours":10.92,"date":"2047-01-27","moon_free_dark_hours":10.9,"moon_illumination":4,"moon_separation":67.4,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":87.1,"transit_local":"10:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.58,"best_label":"good","best_window":"04:30\u201306:05","dark_hours":10.89,"date":"2047-01-28","moon_free_dark_hours":9.87,"moon_illumination":8,"moon_separation":71.4,"score":null,"score_astronomy":39,"score_weather":null,"transit_alt":87.1,"transit_local":"10:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.58,"best_label":"good","best_window":"04:25\u201306:00","dark_hours":10.86,"date":"2047-01-29","moon_free_dark_hours":8.83,"moon_illumination":14,"moon_separation":76.2,"score":null,"score_astronomy":40,"score_weather":null,"transit_alt":87.1,"transit_local":"10:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.58,"best_label":"good","best_window":"04:25\u201306:00","dark_hours":10.82,"date":"2047-01-30","moon_free_dark_hours":7.8,"moon_illumination":22,"moon_separation":81.3,"score":null,"score_astronomy":41,"score_weather":null,"transit_alt":87.1,"transit_local":"10:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.67,"best_label":"good","best_window":"04:20\u201306:00","dark_hours":10.79,"date":"2047-01-31","moon_free_dark_hours":6.8,"moon_illumination":30,"moon_separation":86.7,"score":null,"score_astronomy":42,"score_weather":null,"transit_alt":87.1,"transit_local":"10:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.75,"best_label":"good","best_window":"04:15\u201306:00","dark_hours":10.76,"date":"2047-02-01","moon_free_dark_hours":5.77,"moon_illumination":39,"moon_separation":92.2,"score":null,"score_astronomy":43,"score_weather":null,"transit_alt":87.1,"transit_local":"10:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.83,"best_label":"good","best_window":"04:10\u201306:00","dark_hours":10.73,"date":"2047-02-02","moon_free_dark_hours":4.73,"moon_illumination":48,"moon_separation":97.7,"score":null,"score_astronomy":45,"score_weather":null,"transit_alt":87.1,"transit_local":"10:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.83,"best_label":"good","best_window":"04:10\u201306:00","dark_hours":10.69,"date":"2047-02-03","moon_free_dark_hours":3.68,"moon_illumination":58,"moon_separation":102.9,"score":null,"score_astronomy":47,"score_weather":null,"transit_alt":87.1,"transit_local":"10:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.83,"best_label":"good","best_window":"04:05\u201305:55","dark_hours":10.66,"date":"2047-02-04","moon_free_dark_hours":2.67,"moon_illumination":67,"moon_separation":107.8,"score":null,"score_astronomy":47,"score_weather":null,"transit_alt":87.1,"transit_local":"10:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.75,"best_label":"good","best_window":"04:10\u201305:55","dark_hours":10.62,"date":"2047-02-05","moon_free_dark_hours":1.7,"moon_illumination":76,"moon_separation":112.0,"score":null,"score_astronomy":47,"score_weather":null,"transit_alt":87.1,"transit_local":"09:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.83,"best_label":"good","best_window":"04:05\u201305:55","dark_hours":10.59,"date":"2047-02-06","moon_free_dark_hours":0.83,"moon_illumination":84,"moon_separation":115.3,"score":null,"score_astronomy":47,"score_weather":null,"transit_alt":87.1,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.83,"best_label":"good","best_window":"04:05\u201305:55","dark_hours":10.55,"date":"2047-02-07","moon_free_dark_hours":0.07,"moon_illumination":91,"moon_separation":117.3,"score":null,"score_astronomy":47,"score_weather":null,"transit_alt":87.1,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Thu"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2047-01-09","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}}