{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.08,"best_label":"good","best_window":"05:35\u201305:40","dark_hours":10.03,"date":"2033-02-20","moon_free_dark_hours":4.53,"moon_illumination":65,"moon_separation":84.1,"score":null,"score_astronomy":9,"score_weather":null,"transit_alt":71.1,"transit_local":"10:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.08,"best_label":"good","best_window":"05:30\u201305:35","dark_hours":9.99,"date":"2033-02-21","moon_free_dark_hours":5.48,"moon_illumination":56,"moon_separation":74.4,"score":null,"score_astronomy":10,"score_weather":null,"transit_alt":71.1,"transit_local":"10:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.17,"best_label":"good","best_window":"05:25\u201305:35","dark_hours":9.94,"date":"2033-02-22","moon_free_dark_hours":6.42,"moon_illumination":46,"moon_separation":64.8,"score":null,"score_astronomy":11,"score_weather":null,"transit_alt":71.1,"transit_local":"10:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.25,"best_label":"good","best_window":"05:20\u201305:35","dark_hours":9.9,"date":"2033-02-23","moon_free_dark_hours":7.32,"moon_illumination":35,"moon_separation":55.5,"score":null,"score_astronomy":13,"score_weather":null,"transit_alt":71.1,"transit_local":"10:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.33,"best_label":"good","best_window":"05:10\u201305:30","dark_hours":9.86,"date":"2033-02-24","moon_free_dark_hours":8.15,"moon_illumination":25,"moon_separation":47.0,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":71.1,"transit_local":"10:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.5,"best_label":"good","best_window":"05:00\u201305:30","dark_hours":9.81,"date":"2033-02-25","moon_free_dark_hours":8.95,"moon_illumination":16,"moon_separation":40.5,"score":null,"score_astronomy":17,"score_weather":null,"transit_alt":71.1,"transit_local":"09:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.67,"best_label":"good","best_window":"04:50\u201305:30","dark_hours":9.77,"date":"2033-02-26","moon_free_dark_hours":9.7,"moon_illumination":9,"moon_separation":37.3,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":71.1,"transit_local":"09:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.67,"best_label":"good","best_window":"04:50\u201305:30","dark_hours":9.72,"date":"2033-02-27","moon_free_dark_hours":9.72,"moon_illumination":3,"moon_separation":38.9,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":71.1,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.67,"best_label":"good","best_window":"04:45\u201305:25","dark_hours":9.68,"date":"2033-02-28","moon_free_dark_hours":9.67,"moon_illumination":0,"moon_separation":44.9,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":71.1,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.75,"best_label":"good","best_window":"04:40\u201305:25","dark_hours":9.63,"date":"2033-03-01","moon_free_dark_hours":9.62,"moon_illumination":1,"moon_separation":54.0,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":71.1,"transit_local":"09:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.83,"best_label":"good","best_window":"04:35\u201305:25","dark_hours":9.59,"date":"2033-03-02","moon_free_dark_hours":9.55,"moon_illumination":4,"moon_separation":64.8,"score":null,"score_astronomy":23,"score_weather":null,"transit_alt":71.1,"transit_local":"09:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.83,"best_label":"good","best_window":"04:30\u201305:20","dark_hours":9.54,"date":"2033-03-03","moon_free_dark_hours":8.28,"moon_illumination":10,"moon_separation":76.3,"score":null,"score_astronomy":23,"score_weather":null,"transit_alt":71.1,"transit_local":"09:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.83,"best_label":"good","best_window":"04:30\u201305:20","dark_hours":9.49,"date":"2033-03-04","moon_free_dark_hours":7.07,"moon_illumination":18,"moon_separation":87.9,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":71.1,"transit_local":"09:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.92,"best_label":"good","best_window":"04:25\u201305:20","dark_hours":9.45,"date":"2033-03-05","moon_free_dark_hours":5.9,"moon_illumination":28,"moon_separation":99.2,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":71.1,"transit_local":"09:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.92,"best_label":"good","best_window":"04:20\u201305:15","dark_hours":9.4,"date":"2033-03-06","moon_free_dark_hours":4.78,"moon_illumination":38,"moon_separation":110.0,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":71.1,"transit_local":"09:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.0,"best_label":"good","best_window":"04:15\u201305:15","dark_hours":9.35,"date":"2033-03-07","moon_free_dark_hours":3.8,"moon_illumination":49,"moon_separation":119.9,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":71.1,"transit_local":"09:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.0,"best_label":"good","best_window":"04:15\u201305:15","dark_hours":9.31,"date":"2033-03-08","moon_free_dark_hours":2.88,"moon_illumination":59,"moon_separation":128.7,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":71.1,"transit_local":"09:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.0,"best_label":"good","best_window":"04:10\u201305:10","dark_hours":9.26,"date":"2033-03-09","moon_free_dark_hours":2.07,"moon_illumination":69,"moon_separation":135.9,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":71.1,"transit_local":"09:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.08,"best_label":"good","best_window":"04:05\u201305:10","dark_hours":9.21,"date":"2033-03-10","moon_free_dark_hours":1.35,"moon_illumination":78,"moon_separation":140.9,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":71.1,"transit_local":"09:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.08,"best_label":"good","best_window":"04:05\u201305:10","dark_hours":9.16,"date":"2033-03-11","moon_free_dark_hours":0.72,"moon_illumination":85,"moon_separation":142.8,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":71.1,"transit_local":"09:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.0,"best_label":"good","best_window":"04:05\u201305:05","dark_hours":9.11,"date":"2033-03-12","moon_free_dark_hours":0.13,"moon_illumination":91,"moon_separation":141.5,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":71.1,"transit_local":"09:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.08,"best_label":"good","best_window":"04:00\u201305:05","dark_hours":9.06,"date":"2033-03-13","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":137.2,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":71.1,"transit_local":"08:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.08,"best_label":"good","best_window":"04:00\u201305:05","dark_hours":9.01,"date":"2033-03-14","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":130.9,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":71.1,"transit_local":"08:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.08,"best_label":"good","best_window":"03:55\u201305:00","dark_hours":8.96,"date":"2033-03-15","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":123.2,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":71.1,"transit_local":"08:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.08,"best_label":"good","best_window":"03:55\u201305:00","dark_hours":8.91,"date":"2033-03-16","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":114.6,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":71.1,"transit_local":"08:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.0,"best_label":"good","best_window":"03:55\u201304:55","dark_hours":8.86,"date":"2033-03-17","moon_free_dark_hours":0.02,"moon_illumination":97,"moon_separation":105.5,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":71.1,"transit_local":"08:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.92,"best_label":"good","best_window":"04:00\u201304:55","dark_hours":8.81,"date":"2033-03-18","moon_free_dark_hours":0.95,"moon_illumination":93,"moon_separation":96.1,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":71.1,"transit_local":"08:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.75,"best_label":"good","best_window":"04:10\u201304:55","dark_hours":8.76,"date":"2033-03-19","moon_free_dark_hours":1.88,"moon_illumination":87,"moon_separation":86.5,"score":null,"score_astronomy":20,"score_weather":null,"transit_alt":71.1,"transit_local":"08:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.5,"best_label":"good","best_window":"04:20\u201304:50","dark_hours":8.71,"date":"2033-03-20","moon_free_dark_hours":2.82,"moon_illumination":80,"moon_separation":76.9,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":71.1,"transit_local":"08:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.5,"best_label":"good","best_window":"04:20\u201304:50","dark_hours":8.65,"date":"2033-03-21","moon_free_dark_hours":3.73,"moon_illumination":71,"moon_separation":67.3,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":71.1,"transit_local":"08:25","verdict":"unknown","weather_source":"none","weekday":"Mon"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2033-02-20","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}}
