{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":5.58,"best_label":"good","best_window":"22:45\u201304:20","dark_hours":5.58,"date":"2026-07-27","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":74.5,"score":75,"score_astronomy":76,"score_weather":99,"transit_alt":87.2,"transit_local":"02:00","verdict":"good","weather_source":"history","weekday":"Mon"},{"best_hours":2.0,"best_label":"good","best_window":"23:00\u201301:00","dark_hours":5.63,"date":"2026-07-28","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":68.7,"score":62,"score_astronomy":69,"score_weather":90,"transit_alt":87.3,"transit_local":"01:55","verdict":"marginal","weather_source":"history","weekday":"Tue"},{"best_hours":1.75,"best_label":"good","best_window":"22:40\u201300:25","dark_hours":5.68,"date":"2026-07-29","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":63.6,"score":63,"score_astronomy":63,"score_weather":100,"transit_alt":87.3,"transit_local":"01:50","verdict":"marginal","weather_source":"history","weekday":"Wed"},{"best_hours":1.25,"best_label":"good","best_window":"22:40\u201323:55","dark_hours":5.74,"date":"2026-07-30","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":59.6,"score":61,"score_astronomy":61,"score_weather":100,"transit_alt":87.2,"transit_local":"01:45","verdict":"marginal","weather_source":"history","weekday":"Thu"},{"best_hours":1.58,"best_label":"good","best_window":"22:35\u201300:10","dark_hours":5.79,"date":"2026-07-31","moon_free_dark_hours":0.0,"moon_illumination":95,"moon_separation":57.1,"score":63,"score_astronomy":63,"score_weather":100,"transit_alt":87.2,"transit_local":"01:45","verdict":"marginal","weather_source":"history","weekday":"Fri"},{"best_hours":2.25,"best_label":"good","best_window":"22:35\u201300:50","dark_hours":5.85,"date":"2026-08-01","moon_free_dark_hours":0.0,"moon_illumination":89,"moon_separation":56.3,"score":69,"score_astronomy":69,"score_weather":100,"transit_alt":87.2,"transit_local":"01:40","verdict":"marginal","weather_source":"history","weekday":"Sat"},{"best_hours":3.5,"best_label":"good","best_window":"22:35\u201302:05","dark_hours":5.9,"date":"2026-08-02","moon_free_dark_hours":0.0,"moon_illumination":82,"moon_separation":57.4,"score":72,"score_astronomy":73,"score_weather":99,"transit_alt":87.3,"transit_local":"01:35","verdict":"good","weather_source":"history","weekday":"Sun"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":5.96,"date":"2026-08-03","moon_free_dark_hours":0.32,"moon_illumination":73,"moon_separation":60.3,"score":99,"score_astronomy":100,"score_weather":99,"transit_alt":87.3,"transit_local":"01:30","verdict":"good","weather_source":"history","weekday":"Mon"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":6.01,"date":"2026-08-04","moon_free_dark_hours":0.75,"moon_illumination":63,"moon_separation":65.0,"score":95,"score_astronomy":100,"score_weather":95,"transit_alt":87.2,"transit_local":"01:25","verdict":"good","weather_source":"history","weekday":"Tue"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":6.07,"date":"2026-08-05","moon_free_dark_hours":1.23,"moon_illumination":52,"moon_separation":71.0,"score":90,"score_astronomy":100,"score_weather":90,"transit_alt":87.2,"transit_local":"01:25","verdict":"good","weather_source":"history","weekday":"Wed"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.13,"date":"2026-08-06","moon_free_dark_hours":1.87,"moon_illumination":40,"moon_separation":78.1,"score":90,"score_astronomy":100,"score_weather":90,"transit_alt":87.3,"transit_local":"01:20","verdict":"good","weather_source":"history","weekday":"Thu"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.18,"date":"2026-08-07","moon_free_dark_hours":2.67,"moon_illumination":30,"moon_separation":85.8,"score":97,"score_astronomy":100,"score_weather":97,"transit_alt":87.3,"transit_local":"01:15","verdict":"good","weather_source":"history","weekday":"Fri"},{"best_hours":4.67,"best_label":"good","best_window":"22:20\u201303:00","dark_hours":6.24,"date":"2026-08-08","moon_free_dark_hours":3.67,"moon_illumination":19,"moon_separation":93.8,"score":77,"score_astronomy":100,"score_weather":77,"transit_alt":87.3,"transit_local":"01:10","verdict":"good","weather_source":"history","weekday":"Sat"},{"best_hours":6.33,"best_label":"good","best_window":"22:20\u201304:40","dark_hours":6.3,"date":"2026-08-09","moon_free_dark_hours":4.88,"moon_illumination":11,"moon_separation":101.8,"score":94,"score_astronomy":100,"score_weather":94,"transit_alt":87.2,"transit_local":"01:05","verdict":"good","weather_source":"history","weekday":"Sun"},{"best_hours":6.33,"best_label":"good","best_window":"22:20\u201304:40","dark_hours":6.35,"date":"2026-08-10","moon_free_dark_hours":6.22,"moon_illumination":5,"moon_separation":109.2,"score":99,"score_astronomy":100,"score_weather":99,"transit_alt":87.2,"transit_local":"01:05","verdict":"good","weather_source":"history","weekday":"Mon"},{"best_hours":6.42,"best_label":"good","best_window":"22:15\u201304:40","dark_hours":6.41,"date":"2026-08-11","moon_free_dark_hours":6.38,"moon_illumination":1,"moon_separation":115.6,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"01:00","verdict":"good","weather_source":"history","weekday":"Tue"},{"best_hours":6.5,"best_label":"good","best_window":"22:15\u201304:45","dark_hours":6.47,"date":"2026-08-12","moon_free_dark_hours":6.45,"moon_illumination":0,"moon_separation":120.4,"score":97,"score_astronomy":100,"score_weather":97,"transit_alt":87.3,"transit_local":"00:55","verdict":"good","weather_source":"history","weekday":"Wed"},{"best_hours":2.75,"best_label":"good","best_window":"22:15\u201301:00","dark_hours":6.53,"date":"2026-08-13","moon_free_dark_hours":6.5,"moon_illumination":2,"moon_separation":123.1,"score":31,"score_astronomy":100,"score_weather":31,"transit_alt":87.2,"transit_local":"00:50","verdict":"poor","weather_source":"history","weekday":"Thu"},{"best_hours":3.83,"best_label":"good","best_window":"22:10\u201302:00","dark_hours":6.58,"date":"2026-08-14","moon_free_dark_hours":6.57,"moon_illumination":6,"moon_separation":123.7,"score":68,"score_astronomy":100,"score_weather":68,"transit_alt":87.2,"transit_local":"00:45","verdict":"marginal","weather_source":"history","weekday":"Fri"},{"best_hours":6.58,"best_label":"good","best_window":"22:10\u201304:45","dark_hours":6.64,"date":"2026-08-15","moon_free_dark_hours":6.62,"moon_illumination":12,"moon_separation":122.0,"score":99,"score_astronomy":100,"score_weather":99,"transit_alt":87.2,"transit_local":"00:45","verdict":"good","weather_source":"history","weekday":"Sat"},{"best_hours":6.75,"best_label":"good","best_window":"22:05\u201304:50","dark_hours":6.7,"date":"2026-08-16","moon_free_dark_hours":6.68,"moon_illumination":20,"moon_separation":118.6,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"00:40","verdict":"good","weather_source":"history","weekday":"Sun"},{"best_hours":6.75,"best_label":"good","best_window":"22:05\u201304:50","dark_hours":6.76,"date":"2026-08-17","moon_free_dark_hours":6.55,"moon_illumination":29,"moon_separation":113.9,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"00:35","verdict":"good","weather_source":"history","weekday":"Mon"},{"best_hours":3.92,"best_label":"good","best_window":"22:05\u201302:00","dark_hours":6.81,"date":"2026-08-18","moon_free_dark_hours":6.15,"moon_illumination":39,"moon_separation":108.3,"score":62,"score_astronomy":100,"score_weather":62,"transit_alt":87.2,"transit_local":"00:30","verdict":"marginal","weather_source":"history","weekday":"Tue"},{"best_hours":6.92,"best_label":"good","best_window":"22:00\u201304:55","dark_hours":6.87,"date":"2026-08-19","moon_free_dark_hours":5.68,"moon_illumination":48,"moon_separation":102.2,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.2,"transit_local":"00:30","verdict":"good","weather_source":"history","weekday":"Wed"},{"best_hours":6.92,"best_label":"good","best_window":"22:00\u201304:55","dark_hours":6.93,"date":"2026-08-20","moon_free_dark_hours":5.12,"moon_illumination":58,"moon_separation":95.8,"score":99,"score_astronomy":100,"score_weather":99,"transit_alt":87.3,"transit_local":"00:25","verdict":"good","weather_source":"history","weekday":"Thu"},{"best_hours":7.0,"best_label":"good","best_window":"21:55\u201304:55","dark_hours":6.99,"date":"2026-08-21","moon_free_dark_hours":4.42,"moon_illumination":67,"moon_separation":89.2,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"00:20","verdict":"good","weather_source":"history","weekday":"Fri"},{"best_hours":4.0,"best_label":"good","best_window":"01:00\u201305:00","dark_hours":7.04,"date":"2026-08-22","moon_free_dark_hours":3.6,"moon_illumination":76,"moon_separation":82.7,"score":91,"score_astronomy":100,"score_weather":91,"transit_alt":87.3,"transit_local":"00:15","verdict":"good","weather_source":"history","weekday":"Sat"},{"best_hours":6.0,"best_label":"good","best_window":"23:00\u201305:00","dark_hours":7.1,"date":"2026-08-23","moon_free_dark_hours":2.65,"moon_illumination":83,"moon_separation":76.4,"score":85,"score_astronomy":100,"score_weather":85,"transit_alt":87.2,"transit_local":"00:10","verdict":"good","weather_source":"history","weekday":"Sun"},{"best_hours":3.0,"best_label":"good","best_window":"02:00\u201305:00","dark_hours":7.16,"date":"2026-08-24","moon_free_dark_hours":1.62,"moon_illumination":90,"moon_separation":70.4,"score":52,"score_astronomy":96,"score_weather":54,"transit_alt":87.2,"transit_local":"00:10","verdict":"marginal","weather_source":"history","weekday":"Mon"},{"best_hours":6.0,"best_label":"good","best_window":"23:00\u201305:00","dark_hours":7.22,"date":"2026-08-25","moon_free_dark_hours":0.53,"moon_illumination":95,"moon_separation":65.1,"score":85,"score_astronomy":88,"score_weather":97,"transit_alt":87.3,"transit_local":"00:05","verdict":"good","weather_source":"history","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":"2026-07-27","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"}}