{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":3.0,"best_label":"good","best_window":"20:15\u201323:15","dark_hours":9.82,"date":"2030-10-15","moon_free_dark_hours":0.82,"moon_illumination":82,"moon_separation":43.2,"score":null,"score_astronomy":85,"score_weather":null,"transit_alt":79.1,"transit_local":"01:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.92,"best_label":"good","best_window":"20:15\u201302:10","dark_hours":9.87,"date":"2030-10-16","moon_free_dark_hours":1.65,"moon_illumination":75,"moon_separation":54.1,"score":null,"score_astronomy":91,"score_weather":null,"transit_alt":79.1,"transit_local":"01:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":8.58,"best_label":"good","best_window":"20:10\u201304:45","dark_hours":9.91,"date":"2030-10-17","moon_free_dark_hours":2.53,"moon_illumination":66,"moon_separation":65.3,"score":null,"score_astronomy":99,"score_weather":null,"transit_alt":79.1,"transit_local":"01:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":9.92,"best_label":"good","best_window":"20:10\u201306:05","dark_hours":9.95,"date":"2030-10-18","moon_free_dark_hours":3.5,"moon_illumination":57,"moon_separation":76.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"01:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":10.0,"best_label":"good","best_window":"20:10\u201306:10","dark_hours":9.99,"date":"2030-10-19","moon_free_dark_hours":4.5,"moon_illumination":47,"moon_separation":88.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"01:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":10.08,"best_label":"good","best_window":"20:05\u201306:10","dark_hours":10.03,"date":"2030-10-20","moon_free_dark_hours":5.55,"moon_illumination":37,"moon_separation":100.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"01:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":10.08,"best_label":"good","best_window":"20:05\u201306:10","dark_hours":10.08,"date":"2030-10-21","moon_free_dark_hours":6.62,"moon_illumination":28,"moon_separation":112.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":10.08,"best_label":"good","best_window":"20:05\u201306:10","dark_hours":10.12,"date":"2030-10-22","moon_free_dark_hours":7.72,"moon_illumination":19,"moon_separation":124.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":10.17,"best_label":"good","best_window":"20:05\u201306:15","dark_hours":10.16,"date":"2030-10-23","moon_free_dark_hours":8.87,"moon_illumination":11,"moon_separation":137.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":10.25,"best_label":"good","best_window":"20:00\u201306:15","dark_hours":10.2,"date":"2030-10-24","moon_free_dark_hours":10.05,"moon_illumination":5,"moon_separation":149.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":10.17,"best_label":"good","best_window":"20:00\u201306:10","dark_hours":10.24,"date":"2030-10-25","moon_free_dark_hours":10.22,"moon_illumination":1,"moon_separation":159.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":10.17,"best_label":"good","best_window":"20:00\u201305:10","dark_hours":10.28,"date":"2030-10-26","moon_free_dark_hours":10.27,"moon_illumination":0,"moon_separation":163.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":10.08,"best_label":"good","best_window":"19:00\u201305:05","dark_hours":10.32,"date":"2030-10-27","moon_free_dark_hours":10.3,"moon_illumination":2,"moon_separation":156.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":10.08,"best_label":"good","best_window":"18:55\u201305:00","dark_hours":10.35,"date":"2030-10-28","moon_free_dark_hours":10.33,"moon_illumination":6,"moon_separation":144.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":10.0,"best_label":"good","best_window":"18:55\u201304:55","dark_hours":10.39,"date":"2030-10-29","moon_free_dark_hours":9.97,"moon_illumination":13,"moon_separation":130.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":9.92,"best_label":"good","best_window":"18:55\u201304:50","dark_hours":10.43,"date":"2030-10-30","moon_free_dark_hours":8.9,"moon_illumination":22,"moon_separation":116.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":9.92,"best_label":"good","best_window":"18:55\u201304:50","dark_hours":10.47,"date":"2030-10-31","moon_free_dark_hours":7.75,"moon_illumination":32,"moon_separation":103.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":9.92,"best_label":"good","best_window":"18:50\u201304:45","dark_hours":10.5,"date":"2030-11-01","moon_free_dark_hours":6.6,"moon_illumination":44,"moon_separation":89.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":9.83,"best_label":"good","best_window":"18:50\u201304:40","dark_hours":10.54,"date":"2030-11-02","moon_free_dark_hours":5.48,"moon_illumination":55,"moon_separation":76.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":9.75,"best_label":"good","best_window":"18:50\u201304:35","dark_hours":10.57,"date":"2030-11-03","moon_free_dark_hours":4.38,"moon_illumination":65,"moon_separation":63.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.75,"best_label":"good","best_window":"21:45\u201304:30","dark_hours":10.61,"date":"2030-11-04","moon_free_dark_hours":3.32,"moon_illumination":75,"moon_separation":51.3,"score":null,"score_astronomy":94,"score_weather":null,"transit_alt":79.1,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.33,"best_label":"good","best_window":"03:10\u201304:30","dark_hours":10.64,"date":"2030-11-05","moon_free_dark_hours":2.27,"moon_illumination":83,"moon_separation":39.5,"score":null,"score_astronomy":86,"score_weather":null,"transit_alt":79.1,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.17,"best_label":"good","best_window":"04:15\u201304:25","dark_hours":10.68,"date":"2030-11-06","moon_free_dark_hours":1.25,"moon_illumination":90,"moon_separation":28.6,"score":null,"score_astronomy":65,"score_weather":null,"transit_alt":79.1,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"marginal","best_window":"23:20\u201304:30","dark_hours":10.71,"date":"2030-11-07","moon_free_dark_hours":0.23,"moon_illumination":95,"moon_separation":19.8,"score":null,"score_astronomy":37,"score_weather":null,"transit_alt":79.1,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.42,"best_label":"marginal","best_window":"01:45\u201304:10","dark_hours":10.74,"date":"2030-11-08","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":16.4,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":79.1,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.5,"best_label":"marginal","best_window":"18:45\u201321:15","dark_hours":10.78,"date":"2030-11-09","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":20.9,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":79.1,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.17,"best_label":"marginal","best_window":"18:45\u201321:55","dark_hours":10.81,"date":"2030-11-10","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":29.7,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":79.1,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.75,"best_label":"marginal","best_window":"18:45\u201301:30","dark_hours":10.84,"date":"2030-11-11","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":40.0,"score":null,"score_astronomy":51,"score_weather":null,"transit_alt":79.1,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.92,"best_label":"good","best_window":"18:40\u201320:35","dark_hours":10.87,"date":"2030-11-12","moon_free_dark_hours":0.07,"moon_illumination":93,"moon_separation":50.9,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":79.1,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.42,"best_label":"good","best_window":"18:40\u201323:05","dark_hours":10.9,"date":"2030-11-13","moon_free_dark_hours":0.93,"moon_illumination":88,"moon_separation":62.1,"score":null,"score_astronomy":96,"score_weather":null,"transit_alt":79.1,"transit_local":"22:25","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":"2030-10-15","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}}