{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":2.58,"best_label":"good","best_window":"02:20\u201304:55","dark_hours":7.15,"date":"2045-04-17","moon_free_dark_hours":7.13,"moon_illumination":1,"moon_separation":68.7,"score":null,"score_astronomy":66,"score_weather":null,"transit_alt":87.2,"transit_local":"08:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.67,"best_label":"good","best_window":"02:15\u201304:55","dark_hours":7.1,"date":"2045-04-18","moon_free_dark_hours":7.07,"moon_illumination":3,"moon_separation":75.1,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":87.2,"transit_local":"08:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.75,"best_label":"good","best_window":"02:10\u201304:55","dark_hours":7.04,"date":"2045-04-19","moon_free_dark_hours":5.9,"moon_illumination":8,"moon_separation":82.4,"score":null,"score_astronomy":69,"score_weather":null,"transit_alt":87.2,"transit_local":"08:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":2.75,"best_label":"good","best_window":"02:05\u201304:50","dark_hours":6.98,"date":"2045-04-20","moon_free_dark_hours":4.7,"moon_illumination":15,"moon_separation":90.0,"score":null,"score_astronomy":70,"score_weather":null,"transit_alt":87.2,"transit_local":"08:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.75,"best_label":"good","best_window":"02:05\u201304:50","dark_hours":6.92,"date":"2045-04-21","moon_free_dark_hours":3.63,"moon_illumination":24,"moon_separation":97.7,"score":null,"score_astronomy":71,"score_weather":null,"transit_alt":87.2,"transit_local":"08:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.75,"best_label":"good","best_window":"02:05\u201304:50","dark_hours":6.86,"date":"2045-04-22","moon_free_dark_hours":2.73,"moon_illumination":35,"moon_separation":105.1,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":87.2,"transit_local":"08:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.75,"best_label":"good","best_window":"02:00\u201304:45","dark_hours":6.81,"date":"2045-04-23","moon_free_dark_hours":1.98,"moon_illumination":46,"moon_separation":111.9,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":87.2,"transit_local":"08:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.75,"best_label":"good","best_window":"02:00\u201304:45","dark_hours":6.75,"date":"2045-04-24","moon_free_dark_hours":1.4,"moon_illumination":57,"moon_separation":117.5,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":87.2,"transit_local":"08:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.75,"best_label":"good","best_window":"01:55\u201304:40","dark_hours":6.69,"date":"2045-04-25","moon_free_dark_hours":0.88,"moon_illumination":68,"moon_separation":121.5,"score":null,"score_astronomy":71,"score_weather":null,"transit_alt":87.2,"transit_local":"08:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.75,"best_label":"good","best_window":"01:55\u201304:40","dark_hours":6.63,"date":"2045-04-26","moon_free_dark_hours":0.45,"moon_illumination":78,"moon_separation":123.5,"score":null,"score_astronomy":71,"score_weather":null,"transit_alt":87.2,"transit_local":"08:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":2.83,"best_label":"good","best_window":"01:50\u201304:40","dark_hours":6.57,"date":"2045-04-27","moon_free_dark_hours":0.03,"moon_illumination":87,"moon_separation":123.3,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":87.2,"transit_local":"07:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.75,"best_label":"good","best_window":"01:50\u201304:35","dark_hours":6.51,"date":"2045-04-28","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":120.8,"score":null,"score_astronomy":65,"score_weather":null,"transit_alt":87.2,"transit_local":"07:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.75,"best_label":"good","best_window":"01:50\u201304:35","dark_hours":6.46,"date":"2045-04-29","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":116.5,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.2,"transit_local":"07:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.67,"best_label":"good","best_window":"01:50\u201304:30","dark_hours":6.4,"date":"2045-04-30","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":110.8,"score":null,"score_astronomy":58,"score_weather":null,"transit_alt":87.2,"transit_local":"07:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.67,"best_label":"good","best_window":"01:50\u201304:30","dark_hours":6.34,"date":"2045-05-01","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":104.3,"score":null,"score_astronomy":55,"score_weather":null,"transit_alt":87.2,"transit_local":"07:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.75,"best_label":"good","best_window":"01:45\u201304:30","dark_hours":6.28,"date":"2045-05-02","moon_free_dark_hours":0.13,"moon_illumination":97,"moon_separation":97.4,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":87.2,"transit_local":"07:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.67,"best_label":"good","best_window":"01:45\u201304:25","dark_hours":6.22,"date":"2045-05-03","moon_free_dark_hours":1.2,"moon_illumination":92,"moon_separation":90.4,"score":null,"score_astronomy":50,"score_weather":null,"transit_alt":87.2,"transit_local":"07:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":2.75,"best_label":"good","best_window":"01:40\u201304:25","dark_hours":6.17,"date":"2045-05-04","moon_free_dark_hours":2.1,"moon_illumination":86,"moon_separation":83.5,"score":null,"score_astronomy":50,"score_weather":null,"transit_alt":87.2,"transit_local":"07:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.83,"best_label":"good","best_window":"01:35\u201304:25","dark_hours":6.11,"date":"2045-05-05","moon_free_dark_hours":2.85,"moon_illumination":78,"moon_separation":77.0,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":87.2,"transit_local":"07:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.25,"best_label":"good","best_window":"01:05\u201304:20","dark_hours":6.05,"date":"2045-05-06","moon_free_dark_hours":3.47,"moon_illumination":70,"moon_separation":70.9,"score":null,"score_astronomy":59,"score_weather":null,"transit_alt":87.2,"transit_local":"07:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.33,"best_label":"good","best_window":"01:00\u201304:20","dark_hours":6.0,"date":"2045-05-07","moon_free_dark_hours":3.93,"moon_illumination":61,"moon_separation":65.6,"score":null,"score_astronomy":65,"score_weather":null,"transit_alt":87.2,"transit_local":"07:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.42,"best_label":"good","best_window":"00:55\u201304:20","dark_hours":5.94,"date":"2045-05-08","moon_free_dark_hours":4.33,"moon_illumination":52,"moon_separation":61.3,"score":null,"score_astronomy":72,"score_weather":null,"transit_alt":87.2,"transit_local":"07:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.33,"best_label":"good","best_window":"00:55\u201304:15","dark_hours":5.88,"date":"2045-05-09","moon_free_dark_hours":4.68,"moon_illumination":42,"moon_separation":58.1,"score":null,"score_astronomy":77,"score_weather":null,"transit_alt":87.2,"transit_local":"07:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":3.42,"best_label":"good","best_window":"00:50\u201304:15","dark_hours":5.83,"date":"2045-05-10","moon_free_dark_hours":4.98,"moon_illumination":33,"moon_separation":56.4,"score":null,"score_astronomy":83,"score_weather":null,"transit_alt":87.2,"transit_local":"07:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.5,"best_label":"good","best_window":"00:45\u201304:15","dark_hours":5.77,"date":"2045-05-11","moon_free_dark_hours":5.27,"moon_illumination":24,"moon_separation":56.4,"score":null,"score_astronomy":88,"score_weather":null,"transit_alt":87.2,"transit_local":"07:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":3.5,"best_label":"good","best_window":"00:40\u201304:10","dark_hours":5.72,"date":"2045-05-12","moon_free_dark_hours":5.58,"moon_illumination":16,"moon_separation":58.1,"score":null,"score_astronomy":93,"score_weather":null,"transit_alt":87.2,"transit_local":"06:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.58,"best_label":"good","best_window":"00:35\u201304:10","dark_hours":5.66,"date":"2045-05-13","moon_free_dark_hours":5.65,"moon_illumination":10,"moon_separation":61.5,"score":null,"score_astronomy":96,"score_weather":null,"transit_alt":87.2,"transit_local":"06:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.58,"best_label":"good","best_window":"00:35\u201304:10","dark_hours":5.61,"date":"2045-05-14","moon_free_dark_hours":5.6,"moon_illumination":4,"moon_separation":66.5,"score":null,"score_astronomy":96,"score_weather":null,"transit_alt":87.2,"transit_local":"06:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.58,"best_label":"good","best_window":"00:30\u201304:05","dark_hours":5.56,"date":"2045-05-15","moon_free_dark_hours":5.53,"moon_illumination":1,"moon_separation":72.8,"score":null,"score_astronomy":97,"score_weather":null,"transit_alt":87.2,"transit_local":"06:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.67,"best_label":"good","best_window":"00:25\u201304:05","dark_hours":5.5,"date":"2045-05-16","moon_free_dark_hours":5.48,"moon_illumination":0,"moon_separation":79.9,"score":null,"score_astronomy":99,"score_weather":null,"transit_alt":87.2,"transit_local":"06:40","verdict":"unknown","weather_source":"none","weekday":"Tue"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2045-04-17","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"}}