{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.49,"date":"2044-06-28","moon_free_dark_hours":4.12,"moon_illumination":17,"moon_separation":133.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.51,"date":"2044-06-29","moon_free_dark_hours":3.72,"moon_illumination":26,"moon_separation":128.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.53,"date":"2044-06-30","moon_free_dark_hours":3.35,"moon_illumination":37,"moon_separation":122.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.55,"date":"2044-07-01","moon_free_dark_hours":3.03,"moon_illumination":47,"moon_separation":114.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.58,"date":"2044-07-02","moon_free_dark_hours":2.7,"moon_illumination":57,"moon_separation":105.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.6,"date":"2044-07-03","moon_free_dark_hours":2.35,"moon_illumination":67,"moon_separation":97.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.63,"date":"2044-07-04","moon_free_dark_hours":1.95,"moon_illumination":76,"moon_separation":88.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.67,"best_label":"good","best_window":"23:10\u201303:50","dark_hours":4.66,"date":"2044-07-05","moon_free_dark_hours":1.47,"moon_illumination":84,"moon_separation":79.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.67,"best_label":"good","best_window":"23:10\u201303:50","dark_hours":4.69,"date":"2044-07-06","moon_free_dark_hours":0.88,"moon_illumination":90,"moon_separation":71.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.42,"best_label":"good","best_window":"23:25\u201303:50","dark_hours":4.72,"date":"2044-07-07","moon_free_dark_hours":0.15,"moon_illumination":95,"moon_separation":64.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":3.5,"best_label":"good","best_window":"00:20\u201303:50","dark_hours":4.75,"date":"2044-07-08","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":57.1,"score":null,"score_astronomy":60,"score_weather":null,"transit_alt":71.1,"transit_local":"02:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.33,"best_label":"good","best_window":"03:35\u201303:55","dark_hours":4.79,"date":"2044-07-09","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":51.3,"score":null,"score_astronomy":51,"score_weather":null,"transit_alt":71.1,"transit_local":"02:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.83,"best_label":"marginal","best_window":"23:05\u201303:55","dark_hours":4.82,"date":"2044-07-10","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":47.1,"score":null,"score_astronomy":44,"score_weather":null,"transit_alt":71.1,"transit_local":"02:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.83,"best_label":"marginal","best_window":"23:05\u201303:55","dark_hours":4.86,"date":"2044-07-11","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":45.0,"score":null,"score_astronomy":45,"score_weather":null,"transit_alt":71.1,"transit_local":"02:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.42,"best_label":"good","best_window":"23:05\u201323:30","dark_hours":4.9,"date":"2044-07-12","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":45.3,"score":null,"score_astronomy":50,"score_weather":null,"transit_alt":71.1,"transit_local":"02:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.08,"best_label":"good","best_window":"23:00\u201301:05","dark_hours":4.94,"date":"2044-07-13","moon_free_dark_hours":0.0,"moon_illumination":88,"moon_separation":48.2,"score":null,"score_astronomy":59,"score_weather":null,"transit_alt":71.1,"transit_local":"01:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.83,"best_label":"good","best_window":"23:00\u201302:50","dark_hours":4.98,"date":"2044-07-14","moon_free_dark_hours":0.3,"moon_illumination":81,"moon_separation":53.1,"score":null,"score_astronomy":95,"score_weather":null,"transit_alt":71.1,"transit_local":"01:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.0,"best_label":"good","best_window":"23:00\u201304:00","dark_hours":5.03,"date":"2044-07-15","moon_free_dark_hours":0.63,"moon_illumination":72,"moon_separation":59.8,"score":null,"score_astronomy":97,"score_weather":null,"transit_alt":71.1,"transit_local":"01:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.0,"best_label":"good","best_window":"23:00\u201304:00","dark_hours":5.07,"date":"2044-07-16","moon_free_dark_hours":0.98,"moon_illumination":62,"moon_separation":67.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.11,"date":"2044-07-17","moon_free_dark_hours":1.37,"moon_illumination":52,"moon_separation":76.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.16,"date":"2044-07-18","moon_free_dark_hours":1.83,"moon_illumination":41,"moon_separation":86.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.21,"date":"2044-07-19","moon_free_dark_hours":2.4,"moon_illumination":30,"moon_separation":96.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.25,"best_label":"good","best_window":"22:55\u201304:10","dark_hours":5.26,"date":"2044-07-20","moon_free_dark_hours":3.12,"moon_illumination":20,"moon_separation":106.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.3,"date":"2044-07-21","moon_free_dark_hours":4.07,"moon_illumination":12,"moon_separation":115.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.35,"date":"2044-07-22","moon_free_dark_hours":5.23,"moon_illumination":5,"moon_separation":124.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.4,"date":"2044-07-23","moon_free_dark_hours":5.38,"moon_illumination":1,"moon_separation":131.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.45,"date":"2044-07-24","moon_free_dark_hours":5.43,"moon_illumination":0,"moon_separation":134.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.51,"date":"2044-07-25","moon_free_dark_hours":5.5,"moon_illumination":2,"moon_separation":134.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.56,"date":"2044-07-26","moon_free_dark_hours":5.53,"moon_illumination":7,"moon_separation":131.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.61,"date":"2044-07-27","moon_free_dark_hours":5.6,"moon_illumination":14,"moon_separation":124.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:00","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":"2044-06-28","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}}