{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":9.33,"best_label":"good","best_window":"20:35\u201305:55","dark_hours":9.45,"date":"2027-10-07","moon_free_dark_hours":5.9,"moon_illumination":54,"moon_separation":103.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"01:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":9.33,"best_label":"good","best_window":"20:35\u201305:55","dark_hours":9.5,"date":"2027-10-08","moon_free_dark_hours":4.88,"moon_illumination":63,"moon_separation":92.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"01:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":9.25,"best_label":"good","best_window":"20:40\u201305:55","dark_hours":9.54,"date":"2027-10-09","moon_free_dark_hours":3.85,"moon_illumination":72,"moon_separation":80.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"01:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":8.08,"best_label":"good","best_window":"21:55\u201306:00","dark_hours":9.59,"date":"2027-10-10","moon_free_dark_hours":2.83,"moon_illumination":80,"moon_separation":69.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"01:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.25,"best_label":"good","best_window":"00:45\u201306:00","dark_hours":9.63,"date":"2027-10-11","moon_free_dark_hours":1.83,"moon_illumination":87,"moon_separation":57.9,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":79.1,"transit_local":"01:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.25,"best_label":"good","best_window":"03:45\u201306:00","dark_hours":9.68,"date":"2027-10-12","moon_free_dark_hours":0.82,"moon_illumination":93,"moon_separation":46.4,"score":null,"score_astronomy":90,"score_weather":null,"transit_alt":79.1,"transit_local":"01:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":9.67,"best_label":"marginal","best_window":"20:20\u201306:00","dark_hours":9.72,"date":"2027-10-13","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":35.0,"score":null,"score_astronomy":51,"score_weather":null,"transit_alt":79.1,"transit_local":"01:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.67,"best_label":"marginal","best_window":"02:25\u201306:05","dark_hours":9.77,"date":"2027-10-14","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":24.2,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":79.1,"transit_local":"01:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.58,"best_label":"marginal","best_window":"20:15\u201322:50","dark_hours":9.81,"date":"2027-10-15","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":15.9,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":79.1,"transit_local":"01:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.42,"best_label":"marginal","best_window":"20:15\u201323:40","dark_hours":9.85,"date":"2027-10-16","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":15.6,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":79.1,"transit_local":"01:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.92,"best_label":"marginal","best_window":"20:10\u201301:05","dark_hours":9.9,"date":"2027-10-17","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":24.0,"score":null,"score_astronomy":40,"score_weather":null,"transit_alt":79.1,"transit_local":"01:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":9.92,"best_label":"marginal","best_window":"20:10\u201306:05","dark_hours":9.94,"date":"2027-10-18","moon_free_dark_hours":0.0,"moon_illumination":88,"moon_separation":35.6,"score":null,"score_astronomy":53,"score_weather":null,"transit_alt":79.1,"transit_local":"01:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.83,"best_label":"good","best_window":"20:10\u201300:00","dark_hours":9.98,"date":"2027-10-19","moon_free_dark_hours":0.78,"moon_illumination":80,"moon_separation":48.3,"score":null,"score_astronomy":86,"score_weather":null,"transit_alt":79.1,"transit_local":"01:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.67,"best_label":"good","best_window":"20:10\u201303:50","dark_hours":10.02,"date":"2027-10-20","moon_free_dark_hours":1.83,"moon_illumination":70,"moon_separation":61.4,"score":null,"score_astronomy":94,"score_weather":null,"transit_alt":79.1,"transit_local":"01:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":9.58,"best_label":"good","best_window":"20:05\u201305:40","dark_hours":10.07,"date":"2027-10-21","moon_free_dark_hours":3.03,"moon_illumination":59,"moon_separation":74.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":10.0,"best_label":"good","best_window":"20:05\u201306:05","dark_hours":10.11,"date":"2027-10-22","moon_free_dark_hours":4.28,"moon_illumination":48,"moon_separation":88.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":10.08,"best_label":"good","best_window":"20:05\u201306:10","dark_hours":10.15,"date":"2027-10-23","moon_free_dark_hours":5.57,"moon_illumination":36,"moon_separation":102.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":10.25,"best_label":"good","best_window":"20:00\u201306:15","dark_hours":10.19,"date":"2027-10-24","moon_free_dark_hours":6.85,"moon_illumination":26,"moon_separation":115.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":10.17,"best_label":"good","best_window":"20:00\u201306:10","dark_hours":10.23,"date":"2027-10-25","moon_free_dark_hours":8.08,"moon_illumination":16,"moon_separation":129.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":10.17,"best_label":"good","best_window":"20:00\u201306:10","dark_hours":10.27,"date":"2027-10-26","moon_free_dark_hours":9.33,"moon_illumination":9,"moon_separation":142.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":10.08,"best_label":"good","best_window":"20:00\u201306:05","dark_hours":10.31,"date":"2027-10-27","moon_free_dark_hours":10.28,"moon_illumination":4,"moon_separation":155.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":10.08,"best_label":"good","best_window":"19:55\u201306:00","dark_hours":10.34,"date":"2027-10-28","moon_free_dark_hours":10.33,"moon_illumination":1,"moon_separation":164.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":10.0,"best_label":"good","best_window":"19:55\u201305:55","dark_hours":10.38,"date":"2027-10-29","moon_free_dark_hours":10.37,"moon_illumination":0,"moon_separation":163.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":10.0,"best_label":"good","best_window":"19:55\u201304:55","dark_hours":10.42,"date":"2027-10-30","moon_free_dark_hours":10.4,"moon_illumination":2,"moon_separation":154.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"00:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":9.92,"best_label":"good","best_window":"18:55\u201304:50","dark_hours":10.46,"date":"2027-10-31","moon_free_dark_hours":10.43,"moon_illumination":6,"moon_separation":143.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":9.83,"best_label":"good","best_window":"18:55\u201304:45","dark_hours":10.49,"date":"2027-11-01","moon_free_dark_hours":10.47,"moon_illumination":12,"moon_separation":131.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":9.83,"best_label":"good","best_window":"18:50\u201304:40","dark_hours":10.53,"date":"2027-11-02","moon_free_dark_hours":9.58,"moon_illumination":20,"moon_separation":119.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":9.75,"best_label":"good","best_window":"18:50\u201304:35","dark_hours":10.57,"date":"2027-11-03","moon_free_dark_hours":8.6,"moon_illumination":28,"moon_separation":107.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":9.75,"best_label":"good","best_window":"18:50\u201304:35","dark_hours":10.6,"date":"2027-11-04","moon_free_dark_hours":7.57,"moon_illumination":37,"moon_separation":96.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":9.67,"best_label":"good","best_window":"18:50\u201304:30","dark_hours":10.64,"date":"2027-11-05","moon_free_dark_hours":6.55,"moon_illumination":46,"moon_separation":84.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Fri"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2027-10-07","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}}
