{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.57,"date":"2033-07-02","moon_free_dark_hours":3.7,"moon_illumination":33,"moon_separation":88.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.59,"date":"2033-07-03","moon_free_dark_hours":3.23,"moon_illumination":43,"moon_separation":98.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.62,"date":"2033-07-04","moon_free_dark_hours":2.78,"moon_illumination":52,"moon_separation":109.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.65,"date":"2033-07-05","moon_free_dark_hours":2.3,"moon_illumination":62,"moon_separation":120.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"12:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.68,"date":"2033-07-06","moon_free_dark_hours":1.78,"moon_illumination":71,"moon_separation":130.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.71,"date":"2033-07-07","moon_free_dark_hours":1.18,"moon_illumination":79,"moon_separation":140.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.74,"date":"2033-07-08","moon_free_dark_hours":0.52,"moon_illumination":87,"moon_separation":149.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.78,"date":"2033-07-09","moon_free_dark_hours":0.0,"moon_illumination":93,"moon_separation":155.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.81,"date":"2033-07-10","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":155.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.85,"date":"2033-07-11","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":149.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.89,"date":"2033-07-12","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":139.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.93,"date":"2033-07-13","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":127.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.97,"date":"2033-07-14","moon_free_dark_hours":0.0,"moon_illumination":92,"moon_separation":115.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.01,"date":"2033-07-15","moon_free_dark_hours":0.0,"moon_illumination":84,"moon_separation":102.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.06,"date":"2033-07-16","moon_free_dark_hours":0.45,"moon_illumination":75,"moon_separation":89.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.1,"date":"2033-07-17","moon_free_dark_hours":1.05,"moon_illumination":64,"moon_separation":76.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.15,"date":"2033-07-18","moon_free_dark_hours":1.67,"moon_illumination":53,"moon_separation":63.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.19,"date":"2033-07-19","moon_free_dark_hours":2.35,"moon_illumination":41,"moon_separation":50.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.24,"date":"2033-07-20","moon_free_dark_hours":3.05,"moon_illumination":31,"moon_separation":39.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"11:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.29,"date":"2033-07-21","moon_free_dark_hours":3.83,"moon_illumination":21,"moon_separation":30.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.34,"date":"2033-07-22","moon_free_dark_hours":4.72,"moon_illumination":13,"moon_separation":24.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.39,"date":"2033-07-23","moon_free_dark_hours":5.37,"moon_illumination":6,"moon_separation":25.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.44,"date":"2033-07-24","moon_free_dark_hours":5.42,"moon_illumination":2,"moon_separation":31.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.49,"date":"2033-07-25","moon_free_dark_hours":5.47,"moon_illumination":0,"moon_separation":41.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.54,"date":"2033-07-26","moon_free_dark_hours":5.53,"moon_illumination":0,"moon_separation":51.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.59,"date":"2033-07-27","moon_free_dark_hours":5.58,"moon_illumination":3,"moon_separation":62.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.65,"date":"2033-07-28","moon_free_dark_hours":5.63,"moon_illumination":7,"moon_separation":73.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.7,"date":"2033-07-29","moon_free_dark_hours":5.68,"moon_illumination":12,"moon_separation":84.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.76,"date":"2033-07-30","moon_free_dark_hours":5.73,"moon_illumination":19,"moon_separation":95.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.81,"date":"2033-07-31","moon_free_dark_hours":5.37,"moon_illumination":27,"moon_separation":106.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":42.9,"transit_local":"10:15","verdict":"unknown","weather_source":"none","weekday":"Sun"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2033-07-02","target":{"common_name":"Great Orion Nebula","dec":-5.3876,"name":"M 42","ra":83.8201,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M42","source":"sesame","type":"HII","type_text":"HII region \u2014 a star-forming nebula"}}