{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":9.58,"best_label":"good","best_window":"19:55\u201305:30","dark_hours":10.71,"date":"2042-11-07","moon_free_dark_hours":7.93,"moon_illumination":20,"moon_separation":112.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"01:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":9.67,"best_label":"good","best_window":"19:50\u201305:30","dark_hours":10.75,"date":"2042-11-08","moon_free_dark_hours":8.97,"moon_illumination":13,"moon_separation":124.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"00:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":9.75,"best_label":"good","best_window":"19:45\u201305:30","dark_hours":10.78,"date":"2042-11-09","moon_free_dark_hours":9.98,"moon_illumination":8,"moon_separation":136.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"00:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":9.75,"best_label":"good","best_window":"19:45\u201305:30","dark_hours":10.81,"date":"2042-11-10","moon_free_dark_hours":10.8,"moon_illumination":3,"moon_separation":147.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"00:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":9.92,"best_label":"good","best_window":"19:40\u201305:35","dark_hours":10.84,"date":"2042-11-11","moon_free_dark_hours":10.82,"moon_illumination":1,"moon_separation":159.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"00:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":10.0,"best_label":"good","best_window":"19:35\u201305:35","dark_hours":10.87,"date":"2042-11-12","moon_free_dark_hours":10.85,"moon_illumination":0,"moon_separation":171.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"00:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":10.08,"best_label":"good","best_window":"19:30\u201305:35","dark_hours":10.9,"date":"2042-11-13","moon_free_dark_hours":10.88,"moon_illumination":1,"moon_separation":176.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"00:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":10.17,"best_label":"good","best_window":"19:25\u201305:35","dark_hours":10.93,"date":"2042-11-14","moon_free_dark_hours":10.92,"moon_illumination":4,"moon_separation":164.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"00:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":10.17,"best_label":"good","best_window":"19:25\u201305:35","dark_hours":10.96,"date":"2042-11-15","moon_free_dark_hours":10.93,"moon_illumination":9,"moon_separation":152.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"00:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":10.25,"best_label":"good","best_window":"19:20\u201305:35","dark_hours":10.99,"date":"2042-11-16","moon_free_dark_hours":10.4,"moon_illumination":15,"moon_separation":139.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"00:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":10.25,"best_label":"good","best_window":"19:15\u201305:30","dark_hours":11.02,"date":"2042-11-17","moon_free_dark_hours":9.38,"moon_illumination":23,"moon_separation":126.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"00:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":10.25,"best_label":"good","best_window":"19:15\u201305:30","dark_hours":11.05,"date":"2042-11-18","moon_free_dark_hours":8.25,"moon_illumination":32,"moon_separation":114.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"00:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":10.17,"best_label":"good","best_window":"19:15\u201305:25","dark_hours":11.07,"date":"2042-11-19","moon_free_dark_hours":7.07,"moon_illumination":43,"moon_separation":100.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"00:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":10.0,"best_label":"good","best_window":"19:20\u201305:20","dark_hours":11.1,"date":"2042-11-20","moon_free_dark_hours":5.87,"moon_illumination":54,"moon_separation":87.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"00:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":9.67,"best_label":"good","best_window":"19:35\u201305:15","dark_hours":11.12,"date":"2042-11-21","moon_free_dark_hours":4.65,"moon_illumination":64,"moon_separation":73.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"00:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.75,"best_label":"good","best_window":"21:30\u201305:15","dark_hours":11.15,"date":"2042-11-22","moon_free_dark_hours":3.43,"moon_illumination":75,"moon_separation":59.2,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":72.5,"transit_local":"00:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.58,"best_label":"good","best_window":"01:35\u201305:10","dark_hours":11.17,"date":"2042-11-23","moon_free_dark_hours":2.17,"moon_illumination":84,"moon_separation":44.6,"score":null,"score_astronomy":88,"score_weather":null,"transit_alt":72.5,"transit_local":"00:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.17,"best_label":"good","best_window":"04:55\u201305:05","dark_hours":11.19,"date":"2042-11-24","moon_free_dark_hours":0.87,"moon_illumination":92,"moon_separation":29.8,"score":null,"score_astronomy":65,"score_weather":null,"transit_alt":72.6,"transit_local":"23:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.0,"best_label":"marginal","best_window":"01:05\u201305:05","dark_hours":11.22,"date":"2042-11-25","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":14.7,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":72.6,"transit_local":"23:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.83,"best_label":"marginal","best_window":"19:00\u201319:50","dark_hours":11.24,"date":"2042-11-26","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":0.7,"score":null,"score_astronomy":23,"score_weather":null,"transit_alt":72.5,"transit_local":"23:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.0,"best_label":"marginal","best_window":"18:40\u201321:40","dark_hours":11.26,"date":"2042-11-27","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":15.2,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":72.5,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.67,"best_label":"marginal","best_window":"18:35\u201323:15","dark_hours":11.28,"date":"2042-11-28","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":29.9,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":72.5,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.25,"best_label":"good","best_window":"18:35\u201318:50","dark_hours":11.3,"date":"2042-11-29","moon_free_dark_hours":0.3,"moon_illumination":90,"moon_separation":44.1,"score":null,"score_astronomy":74,"score_weather":null,"transit_alt":72.6,"transit_local":"23:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.17,"best_label":"good","best_window":"18:35\u201323:45","dark_hours":11.32,"date":"2042-11-30","moon_free_dark_hours":1.48,"moon_illumination":83,"moon_separation":57.9,"score":null,"score_astronomy":88,"score_weather":null,"transit_alt":72.6,"transit_local":"23:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":8.08,"best_label":"good","best_window":"18:35\u201302:40","dark_hours":11.33,"date":"2042-12-01","moon_free_dark_hours":2.68,"moon_illumination":74,"moon_separation":71.2,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":72.5,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":9.5,"best_label":"good","best_window":"18:35\u201304:05","dark_hours":11.35,"date":"2042-12-02","moon_free_dark_hours":3.83,"moon_illumination":64,"moon_separation":84.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":9.67,"best_label":"good","best_window":"18:35\u201304:15","dark_hours":11.37,"date":"2042-12-03","moon_free_dark_hours":4.95,"moon_illumination":55,"moon_separation":96.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":9.75,"best_label":"good","best_window":"18:35\u201304:20","dark_hours":11.38,"date":"2042-12-04","moon_free_dark_hours":6.0,"moon_illumination":45,"moon_separation":108.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":9.75,"best_label":"good","best_window":"18:35\u201304:20","dark_hours":11.4,"date":"2042-12-05","moon_free_dark_hours":7.02,"moon_illumination":36,"moon_separation":120.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.6,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":9.67,"best_label":"good","best_window":"18:35\u201304:15","dark_hours":11.41,"date":"2042-12-06","moon_free_dark_hours":8.02,"moon_illumination":27,"moon_separation":132.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":72.5,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Sat"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2042-11-07","target":{"common_name":"Seven Sisters","dec":24.11388889,"name":"Cl Melotte 22","ra":56.60083333,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M45","source":"sesame","type":"OpC","type_text":"open cluster"}}