{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.67,"best_label":"good","best_window":"05:00\u201305:40","dark_hours":10.06,"date":"2028-02-20","moon_free_dark_hours":9.55,"moon_illumination":17,"moon_separation":74.2,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":87.2,"transit_local":"11:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.58,"best_label":"good","best_window":"05:00\u201305:35","dark_hours":10.02,"date":"2028-02-21","moon_free_dark_hours":10.0,"moon_illumination":10,"moon_separation":68.1,"score":null,"score_astronomy":20,"score_weather":null,"transit_alt":87.2,"transit_local":"11:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.67,"best_label":"good","best_window":"04:55\u201305:35","dark_hours":9.98,"date":"2028-02-22","moon_free_dark_hours":9.97,"moon_illumination":6,"moon_separation":62.7,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":87.3,"transit_local":"11:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.75,"best_label":"good","best_window":"04:50\u201305:35","dark_hours":9.93,"date":"2028-02-23","moon_free_dark_hours":9.92,"moon_illumination":2,"moon_separation":58.4,"score":null,"score_astronomy":23,"score_weather":null,"transit_alt":87.2,"transit_local":"11:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.83,"best_label":"good","best_window":"04:45\u201305:35","dark_hours":9.89,"date":"2028-02-24","moon_free_dark_hours":9.87,"moon_illumination":0,"moon_separation":55.5,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":87.2,"transit_local":"11:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.75,"best_label":"good","best_window":"04:45\u201305:30","dark_hours":9.85,"date":"2028-02-25","moon_free_dark_hours":9.83,"moon_illumination":0,"moon_separation":54.2,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":87.2,"transit_local":"11:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.83,"best_label":"good","best_window":"04:40\u201305:30","dark_hours":9.8,"date":"2028-02-26","moon_free_dark_hours":9.78,"moon_illumination":2,"moon_separation":54.6,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":87.2,"transit_local":"10:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.92,"best_label":"good","best_window":"04:35\u201305:30","dark_hours":9.76,"date":"2028-02-27","moon_free_dark_hours":9.18,"moon_illumination":6,"moon_separation":56.8,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":87.3,"transit_local":"10:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.92,"best_label":"good","best_window":"04:30\u201305:25","dark_hours":9.71,"date":"2028-02-28","moon_free_dark_hours":8.13,"moon_illumination":11,"moon_separation":60.6,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":87.2,"transit_local":"10:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.0,"best_label":"good","best_window":"04:25\u201305:25","dark_hours":9.67,"date":"2028-02-29","moon_free_dark_hours":7.07,"moon_illumination":18,"moon_separation":65.6,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.2,"transit_local":"10:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.0,"best_label":"good","best_window":"04:25\u201305:25","dark_hours":9.62,"date":"2028-03-01","moon_free_dark_hours":5.95,"moon_illumination":26,"moon_separation":71.7,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.2,"transit_local":"10:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.08,"best_label":"good","best_window":"04:20\u201305:25","dark_hours":9.58,"date":"2028-03-02","moon_free_dark_hours":4.83,"moon_illumination":35,"moon_separation":78.6,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":87.2,"transit_local":"10:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.08,"best_label":"good","best_window":"04:15\u201305:20","dark_hours":9.53,"date":"2028-03-03","moon_free_dark_hours":3.73,"moon_illumination":45,"moon_separation":86.0,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":87.3,"transit_local":"10:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.17,"best_label":"good","best_window":"04:10\u201305:20","dark_hours":9.48,"date":"2028-03-04","moon_free_dark_hours":2.68,"moon_illumination":56,"moon_separation":93.8,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":87.2,"transit_local":"10:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.25,"best_label":"good","best_window":"04:05\u201305:20","dark_hours":9.44,"date":"2028-03-05","moon_free_dark_hours":1.77,"moon_illumination":67,"moon_separation":101.7,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":87.2,"transit_local":"10:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.0,"best_label":"good","best_window":"04:15\u201305:15","dark_hours":9.39,"date":"2028-03-06","moon_free_dark_hours":0.97,"moon_illumination":77,"moon_separation":109.3,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":87.2,"transit_local":"10:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.08,"best_label":"good","best_window":"04:10\u201305:15","dark_hours":9.34,"date":"2028-03-07","moon_free_dark_hours":0.28,"moon_illumination":86,"moon_separation":116.3,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":87.3,"transit_local":"10:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.17,"best_label":"good","best_window":"04:05\u201305:15","dark_hours":9.29,"date":"2028-03-08","moon_free_dark_hours":0.0,"moon_illumination":93,"moon_separation":121.8,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":87.2,"transit_local":"10:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.08,"best_label":"good","best_window":"04:05\u201305:10","dark_hours":9.25,"date":"2028-03-09","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":125.2,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.2,"transit_local":"10:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.17,"best_label":"good","best_window":"04:00\u201305:10","dark_hours":9.2,"date":"2028-03-10","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":125.8,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.2,"transit_local":"10:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.17,"best_label":"good","best_window":"03:55\u201305:05","dark_hours":9.15,"date":"2028-03-11","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":123.5,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.2,"transit_local":"10:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.17,"best_label":"good","best_window":"03:55\u201305:05","dark_hours":9.1,"date":"2028-03-12","moon_free_dark_hours":0.68,"moon_illumination":95,"moon_separation":118.9,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":87.3,"transit_local":"09:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.25,"best_label":"good","best_window":"03:50\u201305:05","dark_hours":9.05,"date":"2028-03-13","moon_free_dark_hours":1.95,"moon_illumination":88,"moon_separation":112.7,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.2,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.17,"best_label":"good","best_window":"03:50\u201305:00","dark_hours":9.0,"date":"2028-03-14","moon_free_dark_hours":3.2,"moon_illumination":80,"moon_separation":105.5,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.2,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.25,"best_label":"good","best_window":"03:45\u201305:00","dark_hours":8.95,"date":"2028-03-15","moon_free_dark_hours":4.35,"moon_illumination":70,"moon_separation":97.9,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.2,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.33,"best_label":"good","best_window":"03:40\u201305:00","dark_hours":8.9,"date":"2028-03-16","moon_free_dark_hours":5.38,"moon_illumination":60,"moon_separation":90.3,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":87.2,"transit_local":"09:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.33,"best_label":"good","best_window":"03:35\u201304:55","dark_hours":8.85,"date":"2028-03-17","moon_free_dark_hours":6.27,"moon_illumination":50,"moon_separation":82.9,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":87.3,"transit_local":"09:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.42,"best_label":"good","best_window":"03:30\u201304:55","dark_hours":8.8,"date":"2028-03-18","moon_free_dark_hours":7.0,"moon_illumination":41,"moon_separation":75.9,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":87.2,"transit_local":"09:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.75,"best_label":"good","best_window":"03:10\u201304:55","dark_hours":8.75,"date":"2028-03-19","moon_free_dark_hours":7.58,"moon_illumination":31,"moon_separation":69.5,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":87.2,"transit_local":"09:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.67,"best_label":"good","best_window":"03:10\u201304:50","dark_hours":8.7,"date":"2028-03-20","moon_free_dark_hours":8.05,"moon_illumination":23,"moon_separation":63.9,"score":null,"score_astronomy":39,"score_weather":null,"transit_alt":87.2,"transit_local":"09:25","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":"2028-02-20","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"}}