{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":7.33,"best_label":"good","best_window":"22:05\u201305:25","dark_hours":8.18,"date":"2045-09-11","moon_free_dark_hours":8.17,"moon_illumination":1,"moon_separation":145.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.42,"best_label":"good","best_window":"22:00\u201305:25","dark_hours":8.23,"date":"2045-09-12","moon_free_dark_hours":8.22,"moon_illumination":5,"moon_separation":157.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.58,"best_label":"good","best_window":"21:55\u201305:30","dark_hours":8.29,"date":"2045-09-13","moon_free_dark_hours":8.27,"moon_illumination":11,"moon_separation":165.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.67,"best_label":"good","best_window":"21:50\u201305:30","dark_hours":8.34,"date":"2045-09-14","moon_free_dark_hours":8.32,"moon_illumination":20,"moon_separation":161.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.67,"best_label":"good","best_window":"21:50\u201305:30","dark_hours":8.39,"date":"2045-09-15","moon_free_dark_hours":7.98,"moon_illumination":29,"moon_separation":151.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.75,"best_label":"good","best_window":"21:45\u201305:30","dark_hours":8.45,"date":"2045-09-16","moon_free_dark_hours":7.3,"moon_illumination":39,"moon_separation":140.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.83,"best_label":"good","best_window":"21:45\u201305:35","dark_hours":8.5,"date":"2045-09-17","moon_free_dark_hours":6.48,"moon_illumination":49,"moon_separation":128.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.83,"best_label":"good","best_window":"21:45\u201305:35","dark_hours":8.55,"date":"2045-09-18","moon_free_dark_hours":5.55,"moon_illumination":58,"moon_separation":116.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.83,"best_label":"good","best_window":"21:45\u201305:35","dark_hours":8.6,"date":"2045-09-19","moon_free_dark_hours":4.55,"moon_illumination":68,"moon_separation":105.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"03:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.75,"best_label":"good","best_window":"21:50\u201305:35","dark_hours":8.65,"date":"2045-09-20","moon_free_dark_hours":3.53,"moon_illumination":76,"moon_separation":93.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"02:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.5,"best_label":"good","best_window":"22:10\u201305:40","dark_hours":8.7,"date":"2045-09-21","moon_free_dark_hours":2.48,"moon_illumination":84,"moon_separation":82.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"02:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.08,"best_label":"good","best_window":"23:35\u201305:40","dark_hours":8.75,"date":"2045-09-22","moon_free_dark_hours":1.47,"moon_illumination":90,"moon_separation":70.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"02:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.08,"best_label":"good","best_window":"02:35\u201305:40","dark_hours":8.81,"date":"2045-09-23","moon_free_dark_hours":0.45,"moon_illumination":95,"moon_separation":59.3,"score":null,"score_astronomy":99,"score_weather":null,"transit_alt":79.2,"transit_local":"02:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.42,"best_label":"good","best_window":"05:15\u201305:40","dark_hours":8.86,"date":"2045-09-24","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":47.9,"score":null,"score_astronomy":60,"score_weather":null,"transit_alt":79.2,"transit_local":"02:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":8.33,"best_label":"marginal","best_window":"21:20\u201305:40","dark_hours":8.91,"date":"2045-09-25","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":36.7,"score":null,"score_astronomy":42,"score_weather":null,"transit_alt":79.2,"transit_local":"02:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.33,"best_label":"marginal","best_window":"03:25\u201305:45","dark_hours":8.96,"date":"2045-09-26","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":26.1,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":79.2,"transit_local":"02:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":3.58,"best_label":"marginal","best_window":"21:00\u201300:35","dark_hours":9.0,"date":"2045-09-27","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":17.3,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":79.2,"transit_local":"02:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"marginal","best_window":"20:45\u201301:55","dark_hours":9.05,"date":"2045-09-28","moon_free_dark_hours":0.0,"moon_illumination":93,"moon_separation":14.8,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":79.2,"transit_local":"02:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":9.08,"best_label":"marginal","best_window":"20:40\u201305:45","dark_hours":9.1,"date":"2045-09-29","moon_free_dark_hours":0.0,"moon_illumination":87,"moon_separation":21.4,"score":null,"score_astronomy":43,"score_weather":null,"transit_alt":79.2,"transit_local":"02:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.17,"best_label":"good","best_window":"20:50\u201321:00","dark_hours":9.15,"date":"2045-09-30","moon_free_dark_hours":0.33,"moon_illumination":79,"moon_separation":32.0,"score":null,"score_astronomy":66,"score_weather":null,"transit_alt":79.2,"transit_local":"02:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.92,"best_label":"good","best_window":"20:45\u201301:40","dark_hours":9.2,"date":"2045-10-01","moon_free_dark_hours":1.13,"moon_illumination":70,"moon_separation":44.0,"score":null,"score_astronomy":83,"score_weather":null,"transit_alt":79.2,"transit_local":"02:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":8.83,"best_label":"good","best_window":"20:40\u201305:30","dark_hours":9.25,"date":"2045-10-02","moon_free_dark_hours":2.1,"moon_illumination":59,"moon_separation":56.7,"score":null,"score_astronomy":91,"score_weather":null,"transit_alt":79.2,"transit_local":"02:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":9.17,"best_label":"good","best_window":"20:40\u201305:50","dark_hours":9.29,"date":"2045-10-03","moon_free_dark_hours":3.25,"moon_illumination":48,"moon_separation":69.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"02:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":9.33,"best_label":"good","best_window":"20:35\u201305:55","dark_hours":9.34,"date":"2045-10-04","moon_free_dark_hours":4.52,"moon_illumination":37,"moon_separation":83.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"02:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":9.42,"best_label":"good","best_window":"20:30\u201305:55","dark_hours":9.39,"date":"2045-10-05","moon_free_dark_hours":5.83,"moon_illumination":26,"moon_separation":97.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"01:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":9.42,"best_label":"good","best_window":"20:30\u201305:55","dark_hours":9.43,"date":"2045-10-06","moon_free_dark_hours":7.15,"moon_illumination":17,"moon_separation":111.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"01:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":9.5,"best_label":"good","best_window":"20:25\u201305:55","dark_hours":9.48,"date":"2045-10-07","moon_free_dark_hours":8.47,"moon_illumination":9,"moon_separation":125.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"01:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":9.5,"best_label":"good","best_window":"20:25\u201305:55","dark_hours":9.53,"date":"2045-10-08","moon_free_dark_hours":9.52,"moon_illumination":3,"moon_separation":139.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"01:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":9.58,"best_label":"good","best_window":"20:25\u201306:00","dark_hours":9.57,"date":"2045-10-09","moon_free_dark_hours":9.55,"moon_illumination":0,"moon_separation":152.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"01:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":9.67,"best_label":"good","best_window":"20:20\u201306:00","dark_hours":9.62,"date":"2045-10-10","moon_free_dark_hours":9.6,"moon_illumination":0,"moon_separation":162.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.2,"transit_local":"01:40","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":"2045-09-11","target":{"common_name":"Triangulum Pinwheel","dec":30.66017511,"morphology":"SA(s)cd","name":"M 33","ra":23.46206906,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M33","source":"sesame","type":"GiG","type_text":"galaxy in a group","vmag":5.72}}