{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":3.33,"best_label":"good","best_window":"01:30\u201304:50","dark_hours":6.99,"date":"2046-04-20","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":86.0,"score":null,"score_astronomy":67,"score_weather":null,"transit_alt":87.1,"transit_local":"06:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.25,"best_label":"good","best_window":"01:35\u201304:50","dark_hours":6.94,"date":"2046-04-21","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":79.7,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.1,"transit_local":"06:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.67,"best_label":"good","best_window":"01:10\u201304:50","dark_hours":6.88,"date":"2046-04-22","moon_free_dark_hours":0.98,"moon_illumination":94,"moon_separation":74.1,"score":null,"score_astronomy":62,"score_weather":null,"transit_alt":87.1,"transit_local":"05:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.33,"best_label":"good","best_window":"00:25\u201304:45","dark_hours":6.82,"date":"2046-04-23","moon_free_dark_hours":2.08,"moon_illumination":87,"moon_separation":69.5,"score":null,"score_astronomy":65,"score_weather":null,"transit_alt":87.1,"transit_local":"05:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.92,"best_label":"good","best_window":"23:50\u201304:45","dark_hours":6.76,"date":"2046-04-24","moon_free_dark_hours":3.03,"moon_illumination":79,"moon_separation":66.1,"score":null,"score_astronomy":84,"score_weather":null,"transit_alt":87.1,"transit_local":"05:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.83,"best_label":"good","best_window":"23:50\u201304:40","dark_hours":6.7,"date":"2046-04-25","moon_free_dark_hours":3.8,"moon_illumination":70,"moon_separation":64.0,"score":null,"score_astronomy":90,"score_weather":null,"transit_alt":87.1,"transit_local":"05:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.92,"best_label":"good","best_window":"23:45\u201304:40","dark_hours":6.64,"date":"2046-04-26","moon_free_dark_hours":4.38,"moon_illumination":60,"moon_separation":63.4,"score":null,"score_astronomy":95,"score_weather":null,"transit_alt":87.1,"transit_local":"05:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.0,"best_label":"good","best_window":"23:40\u201304:40","dark_hours":6.59,"date":"2046-04-27","moon_free_dark_hours":4.87,"moon_illumination":50,"moon_separation":64.1,"score":null,"score_astronomy":99,"score_weather":null,"transit_alt":87.1,"transit_local":"05:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.0,"best_label":"good","best_window":"23:35\u201304:35","dark_hours":6.53,"date":"2046-04-28","moon_free_dark_hours":5.25,"moon_illumination":41,"moon_separation":66.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.08,"best_label":"good","best_window":"23:30\u201304:35","dark_hours":6.47,"date":"2046-04-29","moon_free_dark_hours":5.58,"moon_illumination":32,"moon_separation":69.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.08,"best_label":"good","best_window":"23:30\u201304:35","dark_hours":6.41,"date":"2046-04-30","moon_free_dark_hours":5.9,"moon_illumination":23,"moon_separation":72.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.08,"best_label":"good","best_window":"23:25\u201304:30","dark_hours":6.35,"date":"2046-05-01","moon_free_dark_hours":6.18,"moon_illumination":16,"moon_separation":77.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.17,"best_label":"good","best_window":"23:20\u201304:30","dark_hours":6.3,"date":"2046-05-02","moon_free_dark_hours":6.28,"moon_illumination":10,"moon_separation":82.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"good","best_window":"23:15\u201304:25","dark_hours":6.24,"date":"2046-05-03","moon_free_dark_hours":6.22,"moon_illumination":5,"moon_separation":87.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.17,"best_label":"good","best_window":"23:15\u201304:25","dark_hours":6.18,"date":"2046-05-04","moon_free_dark_hours":6.17,"moon_illumination":2,"moon_separation":92.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.25,"best_label":"good","best_window":"23:10\u201304:25","dark_hours":6.12,"date":"2046-05-05","moon_free_dark_hours":6.12,"moon_illumination":0,"moon_separation":98.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.25,"best_label":"good","best_window":"23:05\u201304:20","dark_hours":6.07,"date":"2046-05-06","moon_free_dark_hours":6.05,"moon_illumination":1,"moon_separation":103.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.33,"best_label":"good","best_window":"23:00\u201304:20","dark_hours":6.01,"date":"2046-05-07","moon_free_dark_hours":5.98,"moon_illumination":4,"moon_separation":108.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.33,"best_label":"good","best_window":"23:00\u201304:20","dark_hours":5.95,"date":"2046-05-08","moon_free_dark_hours":5.05,"moon_illumination":8,"moon_separation":112.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.33,"best_label":"good","best_window":"22:55\u201304:15","dark_hours":5.9,"date":"2046-05-09","moon_free_dark_hours":4.13,"moon_illumination":15,"moon_separation":115.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.42,"best_label":"good","best_window":"22:50\u201304:15","dark_hours":5.84,"date":"2046-05-10","moon_free_dark_hours":3.33,"moon_illumination":24,"moon_separation":116.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.42,"best_label":"good","best_window":"22:50\u201304:15","dark_hours":5.79,"date":"2046-05-11","moon_free_dark_hours":2.67,"moon_illumination":33,"moon_separation":116.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.73,"date":"2046-05-12","moon_free_dark_hours":2.12,"moon_illumination":44,"moon_separation":114.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.68,"date":"2046-05-13","moon_free_dark_hours":1.62,"moon_illumination":56,"moon_separation":111.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.62,"date":"2046-05-14","moon_free_dark_hours":1.17,"moon_illumination":67,"moon_separation":107.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.25,"best_label":"good","best_window":"22:50\u201304:05","dark_hours":5.57,"date":"2046-05-15","moon_free_dark_hours":0.73,"moon_illumination":77,"moon_separation":101.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.52,"date":"2046-05-16","moon_free_dark_hours":0.27,"moon_illumination":86,"moon_separation":95.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.83,"best_label":"good","best_window":"23:15\u201304:05","dark_hours":5.46,"date":"2046-05-17","moon_free_dark_hours":0.0,"moon_illumination":93,"moon_separation":88.6,"score":null,"score_astronomy":81,"score_weather":null,"transit_alt":87.1,"transit_local":"04:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.25,"best_label":"good","best_window":"23:45\u201304:00","dark_hours":5.41,"date":"2046-05-18","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":82.2,"score":null,"score_astronomy":76,"score_weather":null,"transit_alt":87.1,"transit_local":"04:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.0,"best_label":"good","best_window":"00:00\u201304:00","dark_hours":5.36,"date":"2046-05-19","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":76.3,"score":null,"score_astronomy":71,"score_weather":null,"transit_alt":87.1,"transit_local":"04:10","verdict":"unknown","weather_source":"none","weekday":"Sat"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2046-04-20","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}}
