{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.71,"date":"2036-05-12","moon_free_dark_hours":0.2,"moon_illumination":93,"moon_separation":125.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"11:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.65,"date":"2036-05-13","moon_free_dark_hours":1.05,"moon_illumination":87,"moon_separation":114.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"11:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.6,"date":"2036-05-14","moon_free_dark_hours":1.83,"moon_illumination":80,"moon_separation":104.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"11:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.55,"date":"2036-05-15","moon_free_dark_hours":2.53,"moon_illumination":72,"moon_separation":93.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"11:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.49,"date":"2036-05-16","moon_free_dark_hours":3.13,"moon_illumination":63,"moon_separation":82.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"11:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.44,"date":"2036-05-17","moon_free_dark_hours":3.68,"moon_illumination":54,"moon_separation":71.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"11:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.39,"date":"2036-05-18","moon_free_dark_hours":4.18,"moon_illumination":45,"moon_separation":60.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"11:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.34,"date":"2036-05-19","moon_free_dark_hours":4.65,"moon_illumination":35,"moon_separation":50.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"11:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.29,"date":"2036-05-20","moon_free_dark_hours":5.12,"moon_illumination":26,"moon_separation":40.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"11:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.24,"date":"2036-05-21","moon_free_dark_hours":5.22,"moon_illumination":18,"moon_separation":31.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"10:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.19,"date":"2036-05-22","moon_free_dark_hours":5.18,"moon_illumination":10,"moon_separation":25.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"10:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.15,"date":"2036-05-23","moon_free_dark_hours":5.13,"moon_illumination":5,"moon_separation":24.9,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"10:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.1,"date":"2036-05-24","moon_free_dark_hours":5.08,"moon_illumination":1,"moon_separation":31.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"10:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.06,"date":"2036-05-25","moon_free_dark_hours":5.03,"moon_illumination":0,"moon_separation":41.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"10:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.01,"date":"2036-05-26","moon_free_dark_hours":5.0,"moon_illumination":2,"moon_separation":53.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"10:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.97,"date":"2036-05-27","moon_free_dark_hours":4.95,"moon_illumination":6,"moon_separation":65.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.1,"transit_local":"10:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.93,"date":"2036-05-28","moon_free_dark_hours":4.37,"moon_illumination":13,"moon_separation":79.1,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.1,"transit_local":"10:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.89,"date":"2036-05-29","moon_free_dark_hours":3.47,"moon_illumination":22,"moon_separation":92.4,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.1,"transit_local":"10:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.85,"date":"2036-05-30","moon_free_dark_hours":2.7,"moon_illumination":33,"moon_separation":105.5,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.2,"transit_local":"10:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.81,"date":"2036-05-31","moon_free_dark_hours":2.02,"moon_illumination":44,"moon_separation":118.2,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.2,"transit_local":"10:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.78,"date":"2036-06-01","moon_free_dark_hours":1.42,"moon_illumination":55,"moon_separation":130.3,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.1,"transit_local":"10:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.74,"date":"2036-06-02","moon_free_dark_hours":0.85,"moon_illumination":66,"moon_separation":141.4,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.1,"transit_local":"10:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.71,"date":"2036-06-03","moon_free_dark_hours":0.32,"moon_illumination":76,"moon_separation":150.4,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.1,"transit_local":"10:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.08,"best_label":"marginal","best_window":"04:30\u201304:35","dark_hours":4.68,"date":"2036-06-04","moon_free_dark_hours":0.0,"moon_illumination":84,"moon_separation":155.4,"score":null,"score_astronomy":2,"score_weather":null,"transit_alt":79.2,"transit_local":"10:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.08,"best_label":"marginal","best_window":"04:30\u201304:35","dark_hours":4.65,"date":"2036-06-05","moon_free_dark_hours":0.0,"moon_illumination":91,"moon_separation":154.4,"score":null,"score_astronomy":2,"score_weather":null,"transit_alt":79.2,"transit_local":"09:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.62,"date":"2036-06-06","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":148.1,"score":null,"score_astronomy":2,"score_weather":null,"transit_alt":79.1,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":4.59,"date":"2036-06-07","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":139.0,"score":null,"score_astronomy":2,"score_weather":null,"transit_alt":79.1,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.08,"best_label":"marginal","best_window":"04:25\u201304:30","dark_hours":4.57,"date":"2036-06-08","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":128.8,"score":null,"score_astronomy":2,"score_weather":null,"transit_alt":79.2,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.08,"best_label":"marginal","best_window":"04:25\u201304:30","dark_hours":4.54,"date":"2036-06-09","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":118.2,"score":null,"score_astronomy":2,"score_weather":null,"transit_alt":79.2,"transit_local":"09:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.08,"best_label":"marginal","best_window":"04:25\u201304:30","dark_hours":4.52,"date":"2036-06-10","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":107.4,"score":null,"score_astronomy":2,"score_weather":null,"transit_alt":79.2,"transit_local":"09:35","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":"2036-05-12","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}}