{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.22,"date":"2043-07-20","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":66.7,"score":null,"score_astronomy":67,"score_weather":null,"transit_alt":87.1,"transit_local":"00:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.27,"date":"2043-07-21","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":66.9,"score":null,"score_astronomy":67,"score_weather":null,"transit_alt":87.1,"transit_local":"00:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.42,"best_label":"good","best_window":"22:50\u201303:15","dark_hours":5.32,"date":"2043-07-22","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":68.3,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":87.1,"transit_local":"23:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.33,"best_label":"good","best_window":"22:50\u201303:10","dark_hours":5.37,"date":"2043-07-23","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":70.8,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":87.1,"transit_local":"23:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.67,"best_label":"good","best_window":"22:50\u201303:30","dark_hours":5.42,"date":"2043-07-24","moon_free_dark_hours":0.0,"moon_illumination":92,"moon_separation":74.4,"score":null,"score_astronomy":76,"score_weather":null,"transit_alt":87.1,"transit_local":"23:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.25,"best_label":"good","best_window":"22:45\u201304:00","dark_hours":5.47,"date":"2043-07-25","moon_free_dark_hours":0.1,"moon_illumination":85,"moon_separation":78.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.52,"date":"2043-07-26","moon_free_dark_hours":0.47,"moon_illumination":76,"moon_separation":83.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.57,"date":"2043-07-27","moon_free_dark_hours":0.87,"moon_illumination":66,"moon_separation":89.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.62,"date":"2043-07-28","moon_free_dark_hours":1.28,"moon_illumination":55,"moon_separation":94.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.68,"date":"2043-07-29","moon_free_dark_hours":1.8,"moon_illumination":43,"moon_separation":100.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.73,"date":"2043-07-30","moon_free_dark_hours":2.42,"moon_illumination":32,"moon_separation":105.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.79,"date":"2043-07-31","moon_free_dark_hours":3.18,"moon_illumination":22,"moon_separation":108.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.84,"date":"2043-08-01","moon_free_dark_hours":4.17,"moon_illumination":13,"moon_separation":111.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.9,"date":"2043-08-02","moon_free_dark_hours":5.33,"moon_illumination":6,"moon_separation":113.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":5.95,"date":"2043-08-03","moon_free_dark_hours":5.95,"moon_illumination":2,"moon_separation":113.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":6.01,"date":"2043-08-04","moon_free_dark_hours":5.98,"moon_illumination":0,"moon_separation":111.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":6.06,"date":"2043-08-05","moon_free_dark_hours":6.05,"moon_illumination":1,"moon_separation":108.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.12,"date":"2043-08-06","moon_free_dark_hours":6.1,"moon_illumination":4,"moon_separation":105.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.18,"date":"2043-08-07","moon_free_dark_hours":6.17,"moon_illumination":9,"moon_separation":100.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.25,"best_label":"good","best_window":"22:20\u201304:35","dark_hours":6.23,"date":"2043-08-08","moon_free_dark_hours":6.22,"moon_illumination":16,"moon_separation":95.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.33,"best_label":"good","best_window":"22:20\u201304:40","dark_hours":6.29,"date":"2043-08-09","moon_free_dark_hours":6.1,"moon_illumination":24,"moon_separation":91.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.33,"best_label":"good","best_window":"22:20\u201304:40","dark_hours":6.35,"date":"2043-08-10","moon_free_dark_hours":5.8,"moon_illumination":33,"moon_separation":86.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":6.42,"best_label":"good","best_window":"22:15\u201304:40","dark_hours":6.41,"date":"2043-08-11","moon_free_dark_hours":5.47,"moon_illumination":42,"moon_separation":81.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.33,"best_label":"good","best_window":"22:15\u201304:35","dark_hours":6.46,"date":"2043-08-12","moon_free_dark_hours":5.08,"moon_illumination":51,"moon_separation":77.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.25,"best_label":"good","best_window":"22:15\u201304:30","dark_hours":6.52,"date":"2043-08-13","moon_free_dark_hours":4.58,"moon_illumination":61,"moon_separation":73.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.25,"best_label":"good","best_window":"22:10\u201304:25","dark_hours":6.58,"date":"2043-08-14","moon_free_dark_hours":4.0,"moon_illumination":70,"moon_separation":70.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.17,"best_label":"good","best_window":"22:10\u201304:20","dark_hours":6.64,"date":"2043-08-15","moon_free_dark_hours":3.23,"moon_illumination":78,"moon_separation":68.3,"score":null,"score_astronomy":96,"score_weather":null,"transit_alt":87.1,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.25,"best_label":"good","best_window":"22:05\u201304:20","dark_hours":6.69,"date":"2043-08-16","moon_free_dark_hours":2.33,"moon_illumination":86,"moon_separation":67.0,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":87.1,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.17,"best_label":"good","best_window":"22:05\u201304:15","dark_hours":6.75,"date":"2043-08-17","moon_free_dark_hours":1.27,"moon_illumination":92,"moon_separation":66.8,"score":null,"score_astronomy":81,"score_weather":null,"transit_alt":87.1,"transit_local":"22:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.0,"best_label":"good","best_window":"22:05\u201302:05","dark_hours":6.81,"date":"2043-08-18","moon_free_dark_hours":0.15,"moon_illumination":97,"moon_separation":67.7,"score":null,"score_astronomy":66,"score_weather":null,"transit_alt":87.1,"transit_local":"22:10","verdict":"unknown","weather_source":"none","weekday":"Tue"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2043-07-20","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}}