{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.23,"date":"2042-07-20","moon_free_dark_hours":5.2,"moon_illumination":14,"moon_separation":102.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"00:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.28,"date":"2042-07-21","moon_free_dark_hours":4.9,"moon_illumination":21,"moon_separation":98.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"00:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.33,"date":"2042-07-22","moon_free_dark_hours":4.62,"moon_illumination":29,"moon_separation":93.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.38,"date":"2042-07-23","moon_free_dark_hours":4.33,"moon_illumination":38,"moon_separation":88.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.43,"date":"2042-07-24","moon_free_dark_hours":4.03,"moon_illumination":47,"moon_separation":84.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.48,"date":"2042-07-25","moon_free_dark_hours":3.72,"moon_illumination":57,"moon_separation":79.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.53,"date":"2042-07-26","moon_free_dark_hours":3.3,"moon_illumination":66,"moon_separation":75.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.58,"best_label":"good","best_window":"22:45\u201304:20","dark_hours":5.58,"date":"2042-07-27","moon_free_dark_hours":2.82,"moon_illumination":75,"moon_separation":72.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.64,"date":"2042-07-28","moon_free_dark_hours":2.15,"moon_illumination":84,"moon_separation":69.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.69,"date":"2042-07-29","moon_free_dark_hours":1.33,"moon_illumination":90,"moon_separation":67.4,"score":null,"score_astronomy":93,"score_weather":null,"transit_alt":87.1,"transit_local":"23:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.75,"best_label":"good","best_window":"22:40\u201304:25","dark_hours":5.74,"date":"2042-07-30","moon_free_dark_hours":0.32,"moon_illumination":96,"moon_separation":66.7,"score":null,"score_astronomy":85,"score_weather":null,"transit_alt":87.1,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.0,"best_label":"good","best_window":"22:35\u201303:35","dark_hours":5.8,"date":"2042-07-31","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":67.5,"score":null,"score_astronomy":67,"score_weather":null,"transit_alt":87.1,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.08,"best_label":"good","best_window":"22:35\u201302:40","dark_hours":5.85,"date":"2042-08-01","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":69.6,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":87.1,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.0,"best_label":"good","best_window":"22:35\u201302:35","dark_hours":5.91,"date":"2042-08-02","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":73.1,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":87.1,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.42,"best_label":"good","best_window":"22:30\u201302:55","dark_hours":5.97,"date":"2042-08-03","moon_free_dark_hours":0.0,"moon_illumination":93,"moon_separation":77.6,"score":null,"score_astronomy":77,"score_weather":null,"transit_alt":87.1,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.08,"best_label":"good","best_window":"22:30\u201303:35","dark_hours":6.02,"date":"2042-08-04","moon_free_dark_hours":0.05,"moon_illumination":86,"moon_separation":82.8,"score":null,"score_astronomy":82,"score_weather":null,"transit_alt":87.1,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.92,"best_label":"good","best_window":"22:25\u201304:20","dark_hours":6.08,"date":"2042-08-05","moon_free_dark_hours":0.47,"moon_illumination":77,"moon_separation":88.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.13,"date":"2042-08-06","moon_free_dark_hours":0.88,"moon_illumination":67,"moon_separation":94.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.19,"date":"2042-08-07","moon_free_dark_hours":1.35,"moon_illumination":56,"moon_separation":99.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.25,"best_label":"good","best_window":"22:20\u201304:35","dark_hours":6.25,"date":"2042-08-08","moon_free_dark_hours":1.9,"moon_illumination":44,"moon_separation":104.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.33,"best_label":"good","best_window":"22:20\u201304:40","dark_hours":6.3,"date":"2042-08-09","moon_free_dark_hours":2.53,"moon_illumination":34,"moon_separation":108.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.25,"best_label":"good","best_window":"22:20\u201304:35","dark_hours":6.36,"date":"2042-08-10","moon_free_dark_hours":3.33,"moon_illumination":24,"moon_separation":111.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.33,"best_label":"good","best_window":"22:15\u201304:35","dark_hours":6.42,"date":"2042-08-11","moon_free_dark_hours":4.28,"moon_illumination":15,"moon_separation":112.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":6.25,"best_label":"good","best_window":"22:15\u201304:30","dark_hours":6.48,"date":"2042-08-12","moon_free_dark_hours":5.37,"moon_illumination":8,"moon_separation":113.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.25,"best_label":"good","best_window":"22:15\u201304:30","dark_hours":6.53,"date":"2042-08-13","moon_free_dark_hours":6.5,"moon_illumination":4,"moon_separation":112.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.25,"best_label":"good","best_window":"22:10\u201304:25","dark_hours":6.59,"date":"2042-08-14","moon_free_dark_hours":6.57,"moon_illumination":1,"moon_separation":110.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.17,"best_label":"good","best_window":"22:10\u201304:20","dark_hours":6.65,"date":"2042-08-15","moon_free_dark_hours":6.63,"moon_illumination":0,"moon_separation":107.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.17,"best_label":"good","best_window":"22:05\u201304:15","dark_hours":6.71,"date":"2042-08-16","moon_free_dark_hours":6.68,"moon_illumination":2,"moon_separation":103.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.17,"best_label":"good","best_window":"22:05\u201304:15","dark_hours":6.76,"date":"2042-08-17","moon_free_dark_hours":6.75,"moon_illumination":5,"moon_separation":99.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.08,"best_label":"good","best_window":"22:05\u201304:10","dark_hours":6.82,"date":"2042-08-18","moon_free_dark_hours":6.8,"moon_illumination":9,"moon_separation":95.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:10","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":"2042-07-20","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}}