{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":5.08,"best_label":"good","best_window":"21:10\u201302:15","dark_hours":8.3,"date":"2044-09-13","moon_free_dark_hours":1.48,"moon_illumination":58,"moon_separation":108.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"20:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.08,"best_label":"good","best_window":"21:10\u201302:15","dark_hours":8.35,"date":"2044-09-14","moon_free_dark_hours":2.45,"moon_illumination":47,"moon_separation":111.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"20:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"good","best_window":"21:05\u201302:15","dark_hours":8.41,"date":"2044-09-15","moon_free_dark_hours":3.6,"moon_illumination":36,"moon_separation":113.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"20:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.08,"best_label":"good","best_window":"21:05\u201302:10","dark_hours":8.46,"date":"2044-09-16","moon_free_dark_hours":4.87,"moon_illumination":25,"moon_separation":114.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"20:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.08,"best_label":"good","best_window":"21:05\u201302:10","dark_hours":8.51,"date":"2044-09-17","moon_free_dark_hours":6.22,"moon_illumination":16,"moon_separation":112.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"20:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.08,"best_label":"good","best_window":"21:00\u201302:05","dark_hours":8.56,"date":"2044-09-18","moon_free_dark_hours":7.55,"moon_illumination":8,"moon_separation":110.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"20:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.0,"best_label":"good","best_window":"21:00\u201302:00","dark_hours":8.61,"date":"2044-09-19","moon_free_dark_hours":8.6,"moon_illumination":3,"moon_separation":106.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"20:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.08,"best_label":"good","best_window":"20:55\u201302:00","dark_hours":8.67,"date":"2044-09-20","moon_free_dark_hours":8.65,"moon_illumination":0,"moon_separation":101.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"20:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.0,"best_label":"good","best_window":"20:55\u201301:55","dark_hours":8.72,"date":"2044-09-21","moon_free_dark_hours":8.7,"moon_illumination":0,"moon_separation":96.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"19:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.92,"best_label":"good","best_window":"20:55\u201301:50","dark_hours":8.77,"date":"2044-09-22","moon_free_dark_hours":8.75,"moon_illumination":3,"moon_separation":91.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"19:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.92,"best_label":"good","best_window":"20:50\u201301:45","dark_hours":8.82,"date":"2044-09-23","moon_free_dark_hours":8.8,"moon_illumination":7,"moon_separation":85.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"19:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.83,"best_label":"good","best_window":"20:50\u201301:40","dark_hours":8.87,"date":"2044-09-24","moon_free_dark_hours":8.87,"moon_illumination":13,"moon_separation":80.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"19:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.83,"best_label":"good","best_window":"20:50\u201301:40","dark_hours":8.92,"date":"2044-09-25","moon_free_dark_hours":8.88,"moon_illumination":21,"moon_separation":76.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"19:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.83,"best_label":"good","best_window":"20:45\u201301:35","dark_hours":8.97,"date":"2044-09-26","moon_free_dark_hours":8.28,"moon_illumination":29,"moon_separation":72.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"19:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.75,"best_label":"good","best_window":"20:45\u201301:30","dark_hours":9.02,"date":"2044-09-27","moon_free_dark_hours":7.57,"moon_illumination":38,"moon_separation":69.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"19:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.75,"best_label":"good","best_window":"20:40\u201301:25","dark_hours":9.07,"date":"2044-09-28","moon_free_dark_hours":6.72,"moon_illumination":48,"moon_separation":67.1,"score":null,"score_astronomy":93,"score_weather":null,"transit_alt":87.1,"transit_local":"19:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.67,"best_label":"good","best_window":"20:40\u201301:20","dark_hours":9.11,"date":"2044-09-29","moon_free_dark_hours":5.77,"moon_illumination":57,"moon_separation":66.0,"score":null,"score_astronomy":86,"score_weather":null,"transit_alt":87.1,"transit_local":"19:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.33,"best_label":"good","best_window":"20:40\u201301:00","dark_hours":9.16,"date":"2044-09-30","moon_free_dark_hours":4.73,"moon_illumination":66,"moon_separation":66.0,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":87.1,"transit_local":"19:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.17,"best_label":"good","best_window":"20:35\u201300:45","dark_hours":9.21,"date":"2044-10-01","moon_free_dark_hours":3.67,"moon_illumination":75,"moon_separation":67.1,"score":null,"score_astronomy":62,"score_weather":null,"transit_alt":87.1,"transit_local":"19:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.92,"best_label":"good","best_window":"20:35\u201323:30","dark_hours":9.26,"date":"2044-10-02","moon_free_dark_hours":2.6,"moon_illumination":83,"moon_separation":69.3,"score":null,"score_astronomy":56,"score_weather":null,"transit_alt":87.1,"transit_local":"19:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.17,"best_label":"good","best_window":"20:35\u201322:45","dark_hours":9.31,"date":"2044-10-03","moon_free_dark_hours":1.52,"moon_illumination":90,"moon_separation":72.4,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":87.1,"transit_local":"19:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.92,"best_label":"good","best_window":"20:30\u201322:25","dark_hours":9.35,"date":"2044-10-04","moon_free_dark_hours":0.43,"moon_illumination":95,"moon_separation":76.5,"score":null,"score_astronomy":51,"score_weather":null,"transit_alt":87.1,"transit_local":"19:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.0,"best_label":"good","best_window":"20:30\u201322:30","dark_hours":9.4,"date":"2044-10-05","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":81.2,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":87.1,"transit_local":"19:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":2.33,"best_label":"good","best_window":"20:30\u201322:50","dark_hours":9.45,"date":"2044-10-06","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":86.5,"score":null,"score_astronomy":57,"score_weather":null,"transit_alt":87.1,"transit_local":"18:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.92,"best_label":"good","best_window":"20:25\u201323:20","dark_hours":9.49,"date":"2044-10-07","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":92.1,"score":null,"score_astronomy":64,"score_weather":null,"transit_alt":87.1,"transit_local":"18:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.58,"best_label":"good","best_window":"20:25\u201300:00","dark_hours":9.54,"date":"2044-10-08","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":97.6,"score":null,"score_astronomy":71,"score_weather":null,"transit_alt":87.1,"transit_local":"18:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.92,"best_label":"good","best_window":"20:25\u201300:20","dark_hours":9.58,"date":"2044-10-09","moon_free_dark_hours":0.0,"moon_illumination":90,"moon_separation":102.8,"score":null,"score_astronomy":80,"score_weather":null,"transit_alt":87.1,"transit_local":"18:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.0,"best_label":"good","best_window":"20:20\u201300:20","dark_hours":9.63,"date":"2044-10-10","moon_free_dark_hours":0.27,"moon_illumination":82,"moon_separation":107.4,"score":null,"score_astronomy":99,"score_weather":null,"transit_alt":87.1,"transit_local":"18:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.08,"best_label":"good","best_window":"20:20\u201300:25","dark_hours":9.67,"date":"2044-10-11","moon_free_dark_hours":1.17,"moon_illumination":72,"moon_separation":111.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"18:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.08,"best_label":"good","best_window":"20:20\u201300:25","dark_hours":9.72,"date":"2044-10-12","moon_free_dark_hours":2.25,"moon_illumination":61,"moon_separation":113.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"18:30","verdict":"unknown","weather_source":"none","weekday":"Wed"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2044-09-13","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}}