{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":1.08,"best_label":"good","best_window":"04:05\u201305:10","dark_hours":9.23,"date":"2035-03-10","moon_free_dark_hours":9.22,"moon_illumination":1,"moon_separation":65.2,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":71.1,"transit_local":"09:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.08,"best_label":"good","best_window":"04:05\u201305:10","dark_hours":9.18,"date":"2035-03-11","moon_free_dark_hours":9.02,"moon_illumination":5,"moon_separation":75.6,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":71.1,"transit_local":"09:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.08,"best_label":"good","best_window":"04:00\u201305:05","dark_hours":9.13,"date":"2035-03-12","moon_free_dark_hours":7.85,"moon_illumination":11,"moon_separation":86.4,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":71.1,"transit_local":"09:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.17,"best_label":"good","best_window":"03:55\u201305:05","dark_hours":9.09,"date":"2035-03-13","moon_free_dark_hours":6.68,"moon_illumination":19,"moon_separation":97.4,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":71.1,"transit_local":"08:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.25,"best_label":"good","best_window":"03:50\u201305:05","dark_hours":9.04,"date":"2035-03-14","moon_free_dark_hours":5.5,"moon_illumination":29,"moon_separation":108.3,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":71.1,"transit_local":"08:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.25,"best_label":"good","best_window":"03:45\u201305:00","dark_hours":8.99,"date":"2035-03-15","moon_free_dark_hours":4.38,"moon_illumination":40,"moon_separation":118.6,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":71.1,"transit_local":"08:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.25,"best_label":"good","best_window":"03:45\u201305:00","dark_hours":8.94,"date":"2035-03-16","moon_free_dark_hours":3.32,"moon_illumination":51,"moon_separation":127.9,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":71.1,"transit_local":"08:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.33,"best_label":"good","best_window":"03:40\u201305:00","dark_hours":8.88,"date":"2035-03-17","moon_free_dark_hours":2.33,"moon_illumination":62,"moon_separation":135.4,"score":null,"score_astronomy":35,"score_weather":null,"transit_alt":71.1,"transit_local":"08:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.33,"best_label":"good","best_window":"03:35\u201304:55","dark_hours":8.83,"date":"2035-03-18","moon_free_dark_hours":1.45,"moon_illumination":73,"moon_separation":140.0,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":71.1,"transit_local":"08:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.25,"best_label":"good","best_window":"03:40\u201304:55","dark_hours":8.78,"date":"2035-03-19","moon_free_dark_hours":0.65,"moon_illumination":82,"moon_separation":140.9,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":71.1,"transit_local":"08:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.33,"best_label":"good","best_window":"03:35\u201304:55","dark_hours":8.73,"date":"2035-03-20","moon_free_dark_hours":0.0,"moon_illumination":90,"moon_separation":137.7,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":71.1,"transit_local":"08:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.25,"best_label":"good","best_window":"03:35\u201304:50","dark_hours":8.68,"date":"2035-03-21","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":131.6,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":71.1,"transit_local":"08:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.33,"best_label":"good","best_window":"03:30\u201304:50","dark_hours":8.63,"date":"2035-03-22","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":123.5,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":71.1,"transit_local":"08:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.25,"best_label":"good","best_window":"03:30\u201304:45","dark_hours":8.58,"date":"2035-03-23","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":114.4,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":71.1,"transit_local":"08:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.17,"best_label":"good","best_window":"04:35\u201305:45","dark_hours":8.52,"date":"2035-03-24","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":104.8,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":71.1,"transit_local":"09:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.08,"best_label":"good","best_window":"04:40\u201305:45","dark_hours":8.47,"date":"2035-03-25","moon_free_dark_hours":0.15,"moon_illumination":96,"moon_separation":95.1,"score":null,"score_astronomy":23,"score_weather":null,"transit_alt":71.1,"transit_local":"09:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.58,"best_label":"good","best_window":"05:05\u201305:40","dark_hours":8.42,"date":"2035-03-26","moon_free_dark_hours":1.12,"moon_illumination":91,"moon_separation":85.5,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":71.1,"transit_local":"09:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.33,"best_label":"good","best_window":"05:20\u201305:40","dark_hours":8.36,"date":"2035-03-27","moon_free_dark_hours":2.05,"moon_illumination":85,"moon_separation":76.2,"score":null,"score_astronomy":20,"score_weather":null,"transit_alt":71.1,"transit_local":"09:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.33,"best_label":"good","best_window":"05:20\u201305:40","dark_hours":8.31,"date":"2035-03-28","moon_free_dark_hours":2.97,"moon_illumination":77,"moon_separation":67.2,"score":null,"score_astronomy":20,"score_weather":null,"transit_alt":71.1,"transit_local":"08:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.5,"best_label":"good","best_window":"05:05\u201305:35","dark_hours":8.26,"date":"2035-03-29","moon_free_dark_hours":3.85,"moon_illumination":69,"moon_separation":58.8,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":71.1,"transit_local":"08:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.17,"best_label":"good","best_window":"04:25\u201305:35","dark_hours":8.2,"date":"2035-03-30","moon_free_dark_hours":4.65,"moon_illumination":60,"moon_separation":51.3,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":71.1,"transit_local":"08:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.42,"best_label":"good","best_window":"04:05\u201305:30","dark_hours":8.15,"date":"2035-03-31","moon_free_dark_hours":5.43,"moon_illumination":50,"moon_separation":45.0,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":71.1,"transit_local":"08:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.58,"best_label":"good","best_window":"03:55\u201305:30","dark_hours":8.09,"date":"2035-04-01","moon_free_dark_hours":6.13,"moon_illumination":41,"moon_separation":40.7,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":71.1,"transit_local":"08:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.92,"best_label":"good","best_window":"03:35\u201305:30","dark_hours":8.04,"date":"2035-04-02","moon_free_dark_hours":6.78,"moon_illumination":31,"moon_separation":39.0,"score":null,"score_astronomy":39,"score_weather":null,"transit_alt":71.1,"transit_local":"08:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.83,"best_label":"good","best_window":"03:35\u201305:25","dark_hours":7.98,"date":"2035-04-03","moon_free_dark_hours":7.4,"moon_illumination":22,"moon_separation":40.6,"score":null,"score_astronomy":44,"score_weather":null,"transit_alt":71.1,"transit_local":"08:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.92,"best_label":"good","best_window":"03:30\u201305:25","dark_hours":7.93,"date":"2035-04-04","moon_free_dark_hours":7.92,"moon_illumination":14,"moon_separation":45.2,"score":null,"score_astronomy":49,"score_weather":null,"transit_alt":71.1,"transit_local":"08:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.92,"best_label":"good","best_window":"03:25\u201305:20","dark_hours":7.87,"date":"2035-04-05","moon_free_dark_hours":7.85,"moon_illumination":8,"moon_separation":52.4,"score":null,"score_astronomy":49,"score_weather":null,"transit_alt":71.1,"transit_local":"08:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.0,"best_label":"good","best_window":"03:20\u201305:20","dark_hours":7.82,"date":"2035-04-06","moon_free_dark_hours":7.8,"moon_illumination":3,"moon_separation":61.3,"score":null,"score_astronomy":50,"score_weather":null,"transit_alt":71.1,"transit_local":"08:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.08,"best_label":"good","best_window":"03:15\u201305:20","dark_hours":7.76,"date":"2035-04-07","moon_free_dark_hours":7.73,"moon_illumination":0,"moon_separation":71.5,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":71.1,"transit_local":"08:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.0,"best_label":"good","best_window":"03:15\u201305:15","dark_hours":7.7,"date":"2035-04-08","moon_free_dark_hours":7.68,"moon_illumination":0,"moon_separation":82.4,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":71.1,"transit_local":"08:15","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":"2035-03-10","target":{"dec":22.71085365,"name":"HD 189733","ra":300.18213726,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=HD%20189733","source":"sesame","spectral_type":"K2V","type":"BY*","type_text":"BY Draconis variable \u2014 a spotted, rotating star","vmag":7.648}}
