{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.92,"best_label":"good","best_window":"19:50\u201320:45","dark_hours":9.56,"date":"2043-03-03","moon_free_dark_hours":6.43,"moon_illumination":51,"moon_separation":139.4,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":79.2,"transit_local":"15:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.83,"best_label":"good","best_window":"19:50\u201320:40","dark_hours":9.51,"date":"2043-03-04","moon_free_dark_hours":7.43,"moon_illumination":41,"moon_separation":128.4,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":79.2,"transit_local":"15:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.75,"best_label":"good","best_window":"19:50\u201320:35","dark_hours":9.47,"date":"2043-03-05","moon_free_dark_hours":8.3,"moon_illumination":32,"moon_separation":116.8,"score":null,"score_astronomy":23,"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":9.42,"date":"2043-03-06","moon_free_dark_hours":9.05,"moon_illumination":23,"moon_separation":104.8,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":79.2,"transit_local":"15:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.58,"best_label":"good","best_window":"19:55\u201320:30","dark_hours":9.37,"date":"2043-03-07","moon_free_dark_hours":9.35,"moon_illumination":15,"moon_separation":92.3,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":79.2,"transit_local":"14:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.5,"best_label":"good","best_window":"19:55\u201320:25","dark_hours":9.33,"date":"2043-03-08","moon_free_dark_hours":9.32,"moon_illumination":8,"moon_separation":79.4,"score":null,"score_astronomy":18,"score_weather":null,"transit_alt":79.2,"transit_local":"14:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.42,"best_label":"good","best_window":"19:55\u201320:20","dark_hours":9.28,"date":"2043-03-09","moon_free_dark_hours":9.27,"moon_illumination":3,"moon_separation":66.1,"score":null,"score_astronomy":16,"score_weather":null,"transit_alt":79.2,"transit_local":"14:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.33,"best_label":"good","best_window":"19:55\u201320:15","dark_hours":9.23,"date":"2043-03-10","moon_free_dark_hours":9.2,"moon_illumination":0,"moon_separation":52.7,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":79.2,"transit_local":"14:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.25,"best_label":"good","best_window":"20:00\u201320:15","dark_hours":9.18,"date":"2043-03-11","moon_free_dark_hours":9.17,"moon_illumination":0,"moon_separation":39.4,"score":null,"score_astronomy":11,"score_weather":null,"transit_alt":79.2,"transit_local":"14:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.17,"best_label":"good","best_window":"20:00\u201320:10","dark_hours":9.13,"date":"2043-03-12","moon_free_dark_hours":9.12,"moon_illumination":3,"moon_separation":27.0,"score":null,"score_astronomy":10,"score_weather":null,"transit_alt":79.2,"transit_local":"14:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.17,"best_label":"marginal","best_window":"19:25\u201320:35","dark_hours":9.08,"date":"2043-03-13","moon_free_dark_hours":7.92,"moon_illumination":9,"moon_separation":18.2,"score":null,"score_astronomy":8,"score_weather":null,"transit_alt":79.2,"transit_local":"14:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.5,"best_label":"marginal","best_window":"20:00\u201320:30","dark_hours":9.03,"date":"2043-03-14","moon_free_dark_hours":6.55,"moon_illumination":17,"moon_separation":19.0,"score":null,"score_astronomy":6,"score_weather":null,"transit_alt":79.2,"transit_local":"14:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.33,"best_label":"marginal","best_window":"20:05\u201320:25","dark_hours":8.98,"date":"2043-03-15","moon_free_dark_hours":5.2,"moon_illumination":27,"moon_separation":28.2,"score":null,"score_astronomy":4,"score_weather":null,"transit_alt":79.2,"transit_local":"14:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.33,"best_label":"marginal","best_window":"20:05\u201320:25","dark_hours":8.93,"date":"2043-03-16","moon_free_dark_hours":3.88,"moon_illumination":38,"moon_separation":40.3,"score":null,"score_astronomy":3,"score_weather":null,"transit_alt":79.2,"transit_local":"14:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.17,"best_label":"marginal","best_window":"20:05\u201320:15","dark_hours":8.88,"date":"2043-03-17","moon_free_dark_hours":2.68,"moon_illumination":49,"moon_separation":53.1,"score":null,"score_astronomy":2,"score_weather":null,"transit_alt":79.2,"transit_local":"14:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.08,"best_label":"marginal","best_window":"20:05\u201320:10","dark_hours":8.83,"date":"2043-03-18","moon_free_dark_hours":1.67,"moon_illumination":60,"moon_separation":66.0,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.2,"transit_local":"14:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.78,"date":"2043-03-19","moon_free_dark_hours":0.85,"moon_illumination":70,"moon_separation":78.7,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.2,"transit_local":"14:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.73,"date":"2043-03-20","moon_free_dark_hours":0.22,"moon_illumination":79,"moon_separation":91.3,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.2,"transit_local":"14:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.68,"date":"2043-03-21","moon_free_dark_hours":0.0,"moon_illumination":87,"moon_separation":103.6,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.2,"transit_local":"14:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.62,"date":"2043-03-22","moon_free_dark_hours":0.0,"moon_illumination":93,"moon_separation":115.7,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.2,"transit_local":"14:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.57,"date":"2043-03-23","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":127.4,"score":null,"score_astronomy":1,"score_weather":null,"transit_alt":79.2,"transit_local":"13:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.52,"date":"2043-03-24","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":138.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.47,"date":"2043-03-25","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":149.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.41,"date":"2043-03-26","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":158.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.36,"date":"2043-03-27","moon_free_dark_hours":0.55,"moon_illumination":95,"moon_separation":162.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.31,"date":"2043-03-28","moon_free_dark_hours":1.6,"moon_illumination":90,"moon_separation":160.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.25,"date":"2043-03-29","moon_free_dark_hours":2.65,"moon_illumination":84,"moon_separation":152.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"14:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.2,"date":"2043-03-30","moon_free_dark_hours":3.68,"moon_illumination":76,"moon_separation":142.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"14:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.14,"date":"2043-03-31","moon_free_dark_hours":4.68,"moon_illumination":68,"moon_separation":132.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"14:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":8.09,"date":"2043-04-01","moon_free_dark_hours":5.6,"moon_illumination":58,"moon_separation":120.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"14:20","verdict":"unknown","weather_source":"none","weekday":"Wed"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2043-03-03","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}}