{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":3.58,"best_label":"good","best_window":"00:50\u201304:25","dark_hours":5.78,"date":"2027-07-31","moon_free_dark_hours":5.77,"moon_illumination":3,"moon_separation":74.4,"score":null,"score_astronomy":96,"score_weather":null,"transit_alt":79.1,"transit_local":"06:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.67,"best_label":"good","best_window":"00:45\u201304:25","dark_hours":5.83,"date":"2027-08-01","moon_free_dark_hours":5.82,"moon_illumination":0,"moon_separation":89.1,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":79.1,"transit_local":"06:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.67,"best_label":"good","best_window":"00:45\u201304:25","dark_hours":5.89,"date":"2027-08-02","moon_free_dark_hours":5.88,"moon_illumination":0,"moon_separation":103.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"06:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.83,"best_label":"good","best_window":"00:40\u201304:30","dark_hours":5.94,"date":"2027-08-03","moon_free_dark_hours":5.92,"moon_illumination":4,"moon_separation":118.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"06:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":3.92,"best_label":"good","best_window":"00:35\u201304:30","dark_hours":6.0,"date":"2027-08-04","moon_free_dark_hours":5.98,"moon_illumination":9,"moon_separation":132.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"06:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.0,"best_label":"good","best_window":"00:30\u201304:30","dark_hours":6.06,"date":"2027-08-05","moon_free_dark_hours":6.03,"moon_illumination":17,"moon_separation":146.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"06:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.08,"best_label":"good","best_window":"00:30\u201304:35","dark_hours":6.11,"date":"2027-08-06","moon_free_dark_hours":6.08,"moon_illumination":26,"moon_separation":157.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.17,"best_label":"good","best_window":"00:25\u201304:35","dark_hours":6.17,"date":"2027-08-07","moon_free_dark_hours":5.7,"moon_illumination":37,"moon_separation":165.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.25,"best_label":"good","best_window":"00:20\u201304:35","dark_hours":6.23,"date":"2027-08-08","moon_free_dark_hours":5.22,"moon_illumination":47,"moon_separation":163.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.42,"best_label":"good","best_window":"00:15\u201304:40","dark_hours":6.28,"date":"2027-08-09","moon_free_dark_hours":4.7,"moon_illumination":57,"moon_separation":153.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.42,"best_label":"good","best_window":"00:15\u201304:40","dark_hours":6.34,"date":"2027-08-10","moon_free_dark_hours":4.03,"moon_illumination":67,"moon_separation":142.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.42,"best_label":"good","best_window":"00:15\u201304:40","dark_hours":6.4,"date":"2027-08-11","moon_free_dark_hours":3.28,"moon_illumination":76,"moon_separation":131.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.5,"best_label":"good","best_window":"00:10\u201304:40","dark_hours":6.46,"date":"2027-08-12","moon_free_dark_hours":2.38,"moon_illumination":84,"moon_separation":120.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.5,"best_label":"good","best_window":"00:15\u201304:45","dark_hours":6.51,"date":"2027-08-13","moon_free_dark_hours":1.43,"moon_illumination":90,"moon_separation":108.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.42,"best_label":"good","best_window":"00:20\u201304:45","dark_hours":6.57,"date":"2027-08-14","moon_free_dark_hours":0.43,"moon_illumination":95,"moon_separation":97.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"05:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.75,"best_label":"good","best_window":"01:00\u201304:45","dark_hours":6.63,"date":"2027-08-15","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":85.7,"score":null,"score_astronomy":74,"score_weather":null,"transit_alt":79.1,"transit_local":"05:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.5,"best_label":"good","best_window":"02:20\u201304:50","dark_hours":6.69,"date":"2027-08-16","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":74.2,"score":null,"score_astronomy":59,"score_weather":null,"transit_alt":79.1,"transit_local":"05:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.25,"best_label":"marginal","best_window":"23:35\u201304:50","dark_hours":6.74,"date":"2027-08-17","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":62.7,"score":null,"score_astronomy":45,"score_weather":null,"transit_alt":79.1,"transit_local":"05:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.25,"best_label":"marginal","best_window":"23:35\u201304:50","dark_hours":6.8,"date":"2027-08-18","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":51.3,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":79.1,"transit_local":"05:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.33,"best_label":"marginal","best_window":"23:35\u201304:55","dark_hours":6.86,"date":"2027-08-19","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":39.9,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":79.1,"transit_local":"05:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.42,"best_label":"marginal","best_window":"23:30\u201304:55","dark_hours":6.92,"date":"2027-08-20","moon_free_dark_hours":0.0,"moon_illumination":88,"moon_separation":28.9,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":79.1,"transit_local":"05:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.67,"best_label":"marginal","best_window":"23:15\u201304:55","dark_hours":6.97,"date":"2027-08-21","moon_free_dark_hours":0.0,"moon_illumination":81,"moon_separation":19.1,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":79.1,"transit_local":"04:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.92,"best_label":"marginal","best_window":"23:05\u201305:00","dark_hours":7.03,"date":"2027-08-22","moon_free_dark_hours":0.27,"moon_illumination":72,"moon_separation":14.2,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":79.1,"transit_local":"04:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.17,"best_label":"marginal","best_window":"22:50\u201305:00","dark_hours":7.09,"date":"2027-08-23","moon_free_dark_hours":0.82,"moon_illumination":62,"moon_separation":18.9,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":79.1,"transit_local":"04:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.33,"best_label":"good","best_window":"23:40\u201305:00","dark_hours":7.15,"date":"2027-08-24","moon_free_dark_hours":1.47,"moon_illumination":52,"moon_separation":29.3,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":79.1,"transit_local":"04:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.75,"best_label":"good","best_window":"23:15\u201305:00","dark_hours":7.2,"date":"2027-08-25","moon_free_dark_hours":2.3,"moon_illumination":41,"moon_separation":41.5,"score":null,"score_astronomy":83,"score_weather":null,"transit_alt":79.1,"transit_local":"04:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.92,"best_label":"good","best_window":"23:10\u201305:05","dark_hours":7.26,"date":"2027-08-26","moon_free_dark_hours":3.33,"moon_illumination":30,"moon_separation":54.7,"score":null,"score_astronomy":91,"score_weather":null,"transit_alt":79.1,"transit_local":"04:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.0,"best_label":"good","best_window":"23:05\u201305:05","dark_hours":7.32,"date":"2027-08-27","moon_free_dark_hours":4.53,"moon_illumination":20,"moon_separation":68.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"04:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.08,"best_label":"good","best_window":"23:00\u201305:05","dark_hours":7.37,"date":"2027-08-28","moon_free_dark_hours":5.87,"moon_illumination":11,"moon_separation":82.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"04:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.25,"best_label":"good","best_window":"22:55\u201305:10","dark_hours":7.43,"date":"2027-08-29","moon_free_dark_hours":7.25,"moon_illumination":5,"moon_separation":97.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":79.1,"transit_local":"04:25","verdict":"unknown","weather_source":"none","weekday":"Sun"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2027-07-31","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}}