{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":2.33,"best_label":"good","best_window":"21:50\u201300:10","dark_hours":7.14,"date":"2040-08-23","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":63.0,"score":null,"score_astronomy":70,"score_weather":null,"transit_alt":87.2,"transit_local":"00:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":3.67,"best_label":"good","best_window":"21:50\u201301:30","dark_hours":7.19,"date":"2040-08-24","moon_free_dark_hours":0.0,"moon_illumination":91,"moon_separation":65.4,"score":null,"score_astronomy":74,"score_weather":null,"transit_alt":87.2,"transit_local":"00:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.42,"best_label":"good","best_window":"21:50\u201303:15","dark_hours":7.25,"date":"2040-08-25","moon_free_dark_hours":0.35,"moon_illumination":84,"moon_separation":69.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"00:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.42,"best_label":"good","best_window":"21:45\u201304:10","dark_hours":7.31,"date":"2040-08-26","moon_free_dark_hours":0.8,"moon_illumination":75,"moon_separation":73.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"00:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.33,"best_label":"good","best_window":"21:45\u201305:05","dark_hours":7.36,"date":"2040-08-27","moon_free_dark_hours":1.28,"moon_illumination":65,"moon_separation":79.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.42,"best_label":"good","best_window":"21:40\u201305:05","dark_hours":7.42,"date":"2040-08-28","moon_free_dark_hours":1.8,"moon_illumination":55,"moon_separation":84.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.5,"best_label":"good","best_window":"21:40\u201305:10","dark_hours":7.48,"date":"2040-08-29","moon_free_dark_hours":2.4,"moon_illumination":46,"moon_separation":90.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.5,"best_label":"good","best_window":"21:40\u201305:10","dark_hours":7.53,"date":"2040-08-30","moon_free_dark_hours":3.1,"moon_illumination":36,"moon_separation":96.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.58,"best_label":"good","best_window":"21:35\u201305:10","dark_hours":7.59,"date":"2040-08-31","moon_free_dark_hours":3.9,"moon_illumination":27,"moon_separation":101.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.67,"best_label":"good","best_window":"21:35\u201305:15","dark_hours":7.65,"date":"2040-09-01","moon_free_dark_hours":4.82,"moon_illumination":19,"moon_separation":106.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.75,"best_label":"good","best_window":"21:30\u201305:15","dark_hours":7.7,"date":"2040-09-02","moon_free_dark_hours":5.8,"moon_illumination":12,"moon_separation":110.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.75,"best_label":"good","best_window":"21:30\u201305:15","dark_hours":7.76,"date":"2040-09-03","moon_free_dark_hours":6.85,"moon_illumination":7,"moon_separation":113.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.75,"best_label":"good","best_window":"21:30\u201305:15","dark_hours":7.81,"date":"2040-09-04","moon_free_dark_hours":7.8,"moon_illumination":3,"moon_separation":116.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.92,"best_label":"good","best_window":"21:25\u201305:20","dark_hours":7.87,"date":"2040-09-05","moon_free_dark_hours":7.85,"moon_illumination":1,"moon_separation":117.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.92,"best_label":"good","best_window":"21:25\u201305:20","dark_hours":7.92,"date":"2040-09-06","moon_free_dark_hours":7.9,"moon_illumination":0,"moon_separation":117.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":8.0,"best_label":"good","best_window":"21:20\u201305:20","dark_hours":7.98,"date":"2040-09-07","moon_free_dark_hours":7.97,"moon_illumination":2,"moon_separation":116.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":8.0,"best_label":"good","best_window":"21:20\u201305:20","dark_hours":8.03,"date":"2040-09-08","moon_free_dark_hours":8.02,"moon_illumination":5,"moon_separation":113.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":8.08,"best_label":"good","best_window":"21:20\u201305:25","dark_hours":8.08,"date":"2040-09-09","moon_free_dark_hours":8.07,"moon_illumination":11,"moon_separation":109.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":8.08,"best_label":"good","best_window":"21:15\u201305:20","dark_hours":8.14,"date":"2040-09-10","moon_free_dark_hours":7.85,"moon_illumination":18,"moon_separation":104.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":8.0,"best_label":"good","best_window":"21:15\u201305:15","dark_hours":8.19,"date":"2040-09-11","moon_free_dark_hours":7.42,"moon_illumination":27,"moon_separation":98.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":8.0,"best_label":"good","best_window":"21:10\u201305:10","dark_hours":8.25,"date":"2040-09-12","moon_free_dark_hours":6.88,"moon_illumination":37,"moon_separation":92.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":8.0,"best_label":"good","best_window":"21:10\u201305:10","dark_hours":8.3,"date":"2040-09-13","moon_free_dark_hours":6.2,"moon_illumination":48,"moon_separation":86.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.92,"best_label":"good","best_window":"21:10\u201305:05","dark_hours":8.35,"date":"2040-09-14","moon_free_dark_hours":5.37,"moon_illumination":60,"moon_separation":79.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.92,"best_label":"good","best_window":"21:05\u201305:00","dark_hours":8.4,"date":"2040-09-15","moon_free_dark_hours":4.33,"moon_illumination":70,"moon_separation":74.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.83,"best_label":"good","best_window":"21:05\u201304:55","dark_hours":8.46,"date":"2040-09-16","moon_free_dark_hours":3.12,"moon_illumination":80,"moon_separation":68.9,"score":null,"score_astronomy":93,"score_weather":null,"transit_alt":87.2,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.75,"best_label":"good","best_window":"21:05\u201304:50","dark_hours":8.51,"date":"2040-09-17","moon_free_dark_hours":1.83,"moon_illumination":89,"moon_separation":65.1,"score":null,"score_astronomy":83,"score_weather":null,"transit_alt":87.2,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.5,"best_label":"good","best_window":"21:00\u201322:30","dark_hours":8.56,"date":"2040-09-18","moon_free_dark_hours":0.53,"moon_illumination":95,"moon_separation":62.8,"score":null,"score_astronomy":64,"score_weather":null,"transit_alt":87.2,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.92,"best_label":"good","best_window":"21:00\u201321:55","dark_hours":8.61,"date":"2040-09-19","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":62.5,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.2,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.33,"best_label":"good","best_window":"20:55\u201322:15","dark_hours":8.66,"date":"2040-09-20","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":64.1,"score":null,"score_astronomy":66,"score_weather":null,"transit_alt":87.2,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.25,"best_label":"good","best_window":"20:55\u201323:10","dark_hours":8.71,"date":"2040-09-21","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":67.3,"score":null,"score_astronomy":70,"score_weather":null,"transit_alt":87.2,"transit_local":"22:15","verdict":"unknown","weather_source":"none","weekday":"Fri"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2040-08-23","target":{"common_name":"North America Nebula","dec":44.33,"name":"NGC 7000","ra":314.69583333,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=NGC%207000","source":"sesame","type":"Cl*","type_text":"star cluster"}}