{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":3.08,"best_label":"good","best_window":"19:20\u201322:25","dark_hours":10.62,"date":"2038-02-05","moon_free_dark_hours":10.6,"moon_illumination":3,"moon_separation":60.4,"score":null,"score_astronomy":82,"score_weather":null,"transit_alt":79.2,"transit_local":"16:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.0,"best_label":"good","best_window":"19:20\u201322:20","dark_hours":10.58,"date":"2038-02-06","moon_free_dark_hours":10.03,"moon_illumination":7,"moon_separation":49.9,"score":null,"score_astronomy":77,"score_weather":null,"transit_alt":79.2,"transit_local":"16:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.0,"best_label":"good","best_window":"19:20\u201322:20","dark_hours":10.55,"date":"2038-02-07","moon_free_dark_hours":9.03,"moon_illumination":13,"moon_separation":40.2,"score":null,"score_astronomy":70,"score_weather":null,"transit_alt":79.2,"transit_local":"16:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.92,"best_label":"good","best_window":"19:20\u201322:15","dark_hours":10.51,"date":"2038-02-08","moon_free_dark_hours":8.03,"moon_illumination":20,"moon_separation":31.9,"score":null,"score_astronomy":62,"score_weather":null,"transit_alt":79.2,"transit_local":"16:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.58,"best_label":"good","best_window":"19:25\u201322:00","dark_hours":10.47,"date":"2038-02-09","moon_free_dark_hours":7.05,"moon_illumination":28,"moon_separation":26.0,"score":null,"score_astronomy":50,"score_weather":null,"transit_alt":79.2,"transit_local":"16:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.33,"best_label":"good","best_window":"19:25\u201321:45","dark_hours":10.44,"date":"2038-02-10","moon_free_dark_hours":6.07,"moon_illumination":36,"moon_separation":24.5,"score":null,"score_astronomy":41,"score_weather":null,"transit_alt":79.2,"transit_local":"16:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.25,"best_label":"good","best_window":"19:25\u201320:40","dark_hours":10.4,"date":"2038-02-11","moon_free_dark_hours":5.05,"moon_illumination":46,"moon_separation":28.1,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":79.2,"transit_local":"16:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.92,"best_label":"marginal","best_window":"19:25\u201322:20","dark_hours":10.36,"date":"2038-02-12","moon_free_dark_hours":4.03,"moon_illumination":55,"moon_separation":35.4,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":79.2,"transit_local":"16:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.67,"best_label":"marginal","best_window":"19:30\u201322:10","dark_hours":10.32,"date":"2038-02-13","moon_free_dark_hours":3.02,"moon_illumination":65,"moon_separation":44.8,"score":null,"score_astronomy":20,"score_weather":null,"transit_alt":79.2,"transit_local":"16:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.5,"best_label":"marginal","best_window":"19:30\u201322:00","dark_hours":10.28,"date":"2038-02-14","moon_free_dark_hours":1.98,"moon_illumination":74,"moon_separation":55.5,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":79.2,"transit_local":"16:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.42,"best_label":"marginal","best_window":"19:30\u201321:55","dark_hours":10.24,"date":"2038-02-15","moon_free_dark_hours":1.0,"moon_illumination":83,"moon_separation":67.1,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":79.2,"transit_local":"16:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.5,"best_label":"marginal","best_window":"19:30\u201322:00","dark_hours":10.2,"date":"2038-02-16","moon_free_dark_hours":0.05,"moon_illumination":90,"moon_separation":79.3,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":79.2,"transit_local":"16:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.83,"best_label":"good","best_window":"19:30\u201320:20","dark_hours":10.16,"date":"2038-02-17","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":92.1,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":79.2,"transit_local":"16:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.58,"best_label":"good","best_window":"19:35\u201321:10","dark_hours":10.12,"date":"2038-02-18","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":105.2,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":79.1,"transit_local":"16:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.75,"best_label":"good","best_window":"19:35\u201321:20","dark_hours":10.08,"date":"2038-02-19","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":118.4,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":79.2,"transit_local":"16:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.67,"best_label":"good","best_window":"19:35\u201321:15","dark_hours":10.04,"date":"2038-02-20","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":131.2,"score":null,"score_astronomy":39,"score_weather":null,"transit_alt":79.2,"transit_local":"15:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.67,"best_label":"good","best_window":"19:35\u201321:15","dark_hours":10.0,"date":"2038-02-21","moon_free_dark_hours":0.8,"moon_illumination":92,"moon_separation":143.0,"score":null,"score_astronomy":43,"score_weather":null,"transit_alt":79.2,"transit_local":"15:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.67,"best_label":"good","best_window":"19:40\u201321:20","dark_hours":9.95,"date":"2038-02-22","moon_free_dark_hours":2.03,"moon_illumination":85,"moon_separation":152.2,"score":null,"score_astronomy":42,"score_weather":null,"transit_alt":79.2,"transit_local":"15:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.58,"best_label":"good","best_window":"19:40\u201321:15","dark_hours":9.91,"date":"2038-02-23","moon_free_dark_hours":3.25,"moon_illumination":76,"moon_separation":155.6,"score":null,"score_astronomy":41,"score_weather":null,"transit_alt":79.2,"transit_local":"15:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.5,"best_label":"good","best_window":"19:40\u201321:10","dark_hours":9.87,"date":"2038-02-24","moon_free_dark_hours":4.45,"moon_illumination":65,"moon_separation":151.6,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":79.2,"transit_local":"15:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.42,"best_label":"good","best_window":"19:40\u201321:05","dark_hours":9.82,"date":"2038-02-25","moon_free_dark_hours":5.6,"moon_illumination":54,"moon_separation":142.8,"score":null,"score_astronomy":37,"score_weather":null,"transit_alt":79.2,"transit_local":"15:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.33,"best_label":"good","best_window":"19:45\u201321:05","dark_hours":9.78,"date":"2038-02-26","moon_free_dark_hours":6.7,"moon_illumination":43,"moon_separation":132.0,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":79.2,"transit_local":"15:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.25,"best_label":"good","best_window":"19:45\u201321:00","dark_hours":9.73,"date":"2038-02-27","moon_free_dark_hours":7.73,"moon_illumination":32,"moon_separation":120.6,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":79.2,"transit_local":"15:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.17,"best_label":"good","best_window":"19:45\u201320:55","dark_hours":9.69,"date":"2038-02-28","moon_free_dark_hours":8.65,"moon_illumination":23,"moon_separation":108.9,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":79.2,"transit_local":"15:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.08,"best_label":"good","best_window":"19:45\u201320:50","dark_hours":9.64,"date":"2038-03-01","moon_free_dark_hours":9.43,"moon_illumination":15,"moon_separation":97.3,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":79.2,"transit_local":"15:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.08,"best_label":"good","best_window":"19:45\u201320:50","dark_hours":9.6,"date":"2038-03-02","moon_free_dark_hours":9.58,"moon_illumination":9,"moon_separation":85.8,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":79.2,"transit_local":"15:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.92,"best_label":"good","best_window":"19:50\u201320:45","dark_hours":9.55,"date":"2038-03-03","moon_free_dark_hours":9.55,"moon_illumination":4,"moon_separation":74.5,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":79.2,"transit_local":"15:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.83,"best_label":"good","best_window":"19:50\u201320:40","dark_hours":9.5,"date":"2038-03-04","moon_free_dark_hours":9.48,"moon_illumination":1,"moon_separation":63.5,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":79.2,"transit_local":"15:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.75,"best_label":"good","best_window":"19:50\u201320:35","dark_hours":9.46,"date":"2038-03-05","moon_free_dark_hours":9.43,"moon_illumination":0,"moon_separation":52.9,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":79.2,"transit_local":"15:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.67,"best_label":"good","best_window":"19:50\u201320:30","dark_hours":9.41,"date":"2038-03-06","moon_free_dark_hours":9.4,"moon_illumination":1,"moon_separation":42.9,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":79.2,"transit_local":"15:00","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":"2038-02-05","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}}