{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":4.08,"best_label":"good","best_window":"00:10\u201304:15","dark_hours":5.78,"date":"2033-05-11","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":86.1,"score":null,"score_astronomy":79,"score_weather":null,"transit_alt":87.1,"transit_local":"04:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.33,"best_label":"good","best_window":"00:50\u201304:10","dark_hours":5.72,"date":"2033-05-12","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":79.5,"score":null,"score_astronomy":71,"score_weather":null,"transit_alt":87.1,"transit_local":"04:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.75,"best_label":"good","best_window":"01:25\u201304:10","dark_hours":5.67,"date":"2033-05-13","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":73.2,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.1,"transit_local":"04:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.0,"best_label":"good","best_window":"02:10\u201304:10","dark_hours":5.62,"date":"2033-05-14","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":67.5,"score":null,"score_astronomy":57,"score_weather":null,"transit_alt":87.1,"transit_local":"04:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.08,"best_label":"good","best_window":"04:00\u201304:05","dark_hours":5.56,"date":"2033-05-15","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":62.6,"score":null,"score_astronomy":53,"score_weather":null,"transit_alt":87.1,"transit_local":"04:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.67,"best_label":"good","best_window":"01:25\u201302:05","dark_hours":5.51,"date":"2033-05-16","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":58.9,"score":null,"score_astronomy":56,"score_weather":null,"transit_alt":87.1,"transit_local":"04:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.5,"best_label":"good","best_window":"22:35\u201304:05","dark_hours":5.46,"date":"2033-05-17","moon_free_dark_hours":0.82,"moon_illumination":87,"moon_separation":56.9,"score":null,"score_astronomy":84,"score_weather":null,"transit_alt":87.1,"transit_local":"04:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.33,"best_label":"good","best_window":"22:40\u201304:00","dark_hours":5.41,"date":"2033-05-18","moon_free_dark_hours":1.57,"moon_illumination":80,"moon_separation":56.8,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":87.1,"transit_local":"04:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.33,"best_label":"good","best_window":"22:40\u201304:00","dark_hours":5.35,"date":"2033-05-19","moon_free_dark_hours":2.25,"moon_illumination":70,"moon_separation":58.7,"score":null,"score_astronomy":95,"score_weather":null,"transit_alt":87.1,"transit_local":"04:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.33,"best_label":"good","best_window":"22:40\u201304:00","dark_hours":5.3,"date":"2033-05-20","moon_free_dark_hours":2.87,"moon_illumination":60,"moon_separation":62.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.33,"best_label":"good","best_window":"22:40\u201304:00","dark_hours":5.26,"date":"2033-05-21","moon_free_dark_hours":3.45,"moon_illumination":48,"moon_separation":67.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.17,"best_label":"good","best_window":"22:45\u201303:55","dark_hours":5.21,"date":"2033-05-22","moon_free_dark_hours":4.0,"moon_illumination":37,"moon_separation":74.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.17,"best_label":"good","best_window":"22:45\u201303:55","dark_hours":5.16,"date":"2033-05-23","moon_free_dark_hours":4.57,"moon_illumination":26,"moon_separation":82.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.17,"best_label":"good","best_window":"22:45\u201303:55","dark_hours":5.11,"date":"2033-05-24","moon_free_dark_hours":5.1,"moon_illumination":16,"moon_separation":90.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.08,"best_label":"good","best_window":"22:50\u201303:55","dark_hours":5.07,"date":"2033-05-25","moon_free_dark_hours":5.07,"moon_illumination":9,"moon_separation":98.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.0,"best_label":"good","best_window":"22:50\u201303:50","dark_hours":5.02,"date":"2033-05-26","moon_free_dark_hours":5.0,"moon_illumination":3,"moon_separation":105.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.0,"best_label":"good","best_window":"22:50\u201303:50","dark_hours":4.98,"date":"2033-05-27","moon_free_dark_hours":4.97,"moon_illumination":0,"moon_separation":112.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.92,"best_label":"good","best_window":"22:55\u201303:50","dark_hours":4.94,"date":"2033-05-28","moon_free_dark_hours":4.92,"moon_illumination":0,"moon_separation":117.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.92,"best_label":"good","best_window":"22:55\u201303:50","dark_hours":4.9,"date":"2033-05-29","moon_free_dark_hours":4.88,"moon_illumination":3,"moon_separation":121.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.83,"best_label":"good","best_window":"22:55\u201303:45","dark_hours":4.86,"date":"2033-05-30","moon_free_dark_hours":4.85,"moon_illumination":8,"moon_separation":123.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.83,"best_label":"good","best_window":"22:55\u201303:45","dark_hours":4.82,"date":"2033-05-31","moon_free_dark_hours":4.47,"moon_illumination":14,"moon_separation":123.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.75,"best_label":"good","best_window":"23:00\u201303:45","dark_hours":4.79,"date":"2033-06-01","moon_free_dark_hours":3.8,"moon_illumination":22,"moon_separation":120.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.75,"best_label":"good","best_window":"23:00\u201303:45","dark_hours":4.75,"date":"2033-06-02","moon_free_dark_hours":3.2,"moon_illumination":31,"moon_separation":117.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.75,"best_label":"good","best_window":"23:00\u201303:45","dark_hours":4.72,"date":"2033-06-03","moon_free_dark_hours":2.65,"moon_illumination":40,"moon_separation":112.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.75,"best_label":"good","best_window":"23:00\u201303:45","dark_hours":4.68,"date":"2033-06-04","moon_free_dark_hours":2.17,"moon_illumination":50,"moon_separation":107.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.58,"best_label":"good","best_window":"23:05\u201303:40","dark_hours":4.65,"date":"2033-06-05","moon_free_dark_hours":1.68,"moon_illumination":59,"moon_separation":100.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.58,"best_label":"good","best_window":"23:05\u201303:40","dark_hours":4.63,"date":"2033-06-06","moon_free_dark_hours":1.18,"moon_illumination":68,"moon_separation":94.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"02:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.58,"best_label":"good","best_window":"23:05\u201303:40","dark_hours":4.6,"date":"2033-06-07","moon_free_dark_hours":0.68,"moon_illumination":76,"moon_separation":88.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"02:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.58,"best_label":"good","best_window":"23:05\u201303:40","dark_hours":4.57,"date":"2033-06-08","moon_free_dark_hours":0.17,"moon_illumination":84,"moon_separation":81.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"02:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.58,"best_label":"good","best_window":"23:05\u201303:40","dark_hours":4.55,"date":"2033-06-09","moon_free_dark_hours":0.0,"moon_illumination":91,"moon_separation":75.1,"score":null,"score_astronomy":76,"score_weather":null,"transit_alt":87.1,"transit_local":"02:45","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":"2033-05-11","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}}