{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":4.42,"best_label":"good","best_window":"23:15\u201303:40","dark_hours":4.42,"date":"2047-06-22","moon_free_dark_hours":4.4,"moon_illumination":0,"moon_separation":121.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"03:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.42,"best_label":"good","best_window":"23:15\u201303:40","dark_hours":4.43,"date":"2047-06-23","moon_free_dark_hours":4.42,"moon_illumination":0,"moon_separation":129.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"03:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.42,"best_label":"good","best_window":"23:15\u201303:40","dark_hours":4.44,"date":"2047-06-24","moon_free_dark_hours":4.42,"moon_illumination":2,"moon_separation":135.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.42,"best_label":"good","best_window":"23:15\u201303:40","dark_hours":4.44,"date":"2047-06-25","moon_free_dark_hours":4.43,"moon_illumination":6,"moon_separation":139.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.42,"best_label":"good","best_window":"23:15\u201303:40","dark_hours":4.45,"date":"2047-06-26","moon_free_dark_hours":4.43,"moon_illumination":13,"moon_separation":139.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"03:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.42,"best_label":"good","best_window":"23:15\u201303:40","dark_hours":4.47,"date":"2047-06-27","moon_free_dark_hours":4.27,"moon_illumination":21,"moon_separation":137.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"03:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.42,"best_label":"good","best_window":"23:15\u201303:40","dark_hours":4.48,"date":"2047-06-28","moon_free_dark_hours":3.83,"moon_illumination":30,"moon_separation":131.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"02:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.5,"best_label":"good","best_window":"23:10\u201303:40","dark_hours":4.5,"date":"2047-06-29","moon_free_dark_hours":3.43,"moon_illumination":41,"moon_separation":122.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.52,"date":"2047-06-30","moon_free_dark_hours":3.0,"moon_illumination":52,"moon_separation":113.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.54,"date":"2047-07-01","moon_free_dark_hours":2.53,"moon_illumination":64,"moon_separation":102.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"02:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.56,"date":"2047-07-02","moon_free_dark_hours":1.97,"moon_illumination":74,"moon_separation":92.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"02:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.58,"date":"2047-07-03","moon_free_dark_hours":1.28,"moon_illumination":84,"moon_separation":80.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"02:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.58,"best_label":"good","best_window":"23:10\u201303:45","dark_hours":4.61,"date":"2047-07-04","moon_free_dark_hours":0.42,"moon_illumination":92,"moon_separation":70.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":3.33,"best_label":"good","best_window":"00:25\u201303:45","dark_hours":4.64,"date":"2047-07-05","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":59.9,"score":null,"score_astronomy":61,"score_weather":null,"transit_alt":71.1,"transit_local":"02:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.5,"best_label":"marginal","best_window":"23:10\u201304:40","dark_hours":4.67,"date":"2047-07-06","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":51.0,"score":null,"score_astronomy":47,"score_weather":null,"transit_alt":71.2,"transit_local":"02:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":4.67,"best_label":"marginal","best_window":"23:10\u201303:50","dark_hours":4.7,"date":"2047-07-07","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":44.2,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":71.2,"transit_local":"02:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.75,"best_label":"marginal","best_window":"23:05\u201303:50","dark_hours":4.73,"date":"2047-07-08","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":40.4,"score":null,"score_astronomy":37,"score_weather":null,"transit_alt":71.1,"transit_local":"02:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.75,"best_label":"marginal","best_window":"23:05\u201303:50","dark_hours":4.76,"date":"2047-07-09","moon_free_dark_hours":0.0,"moon_illumination":92,"moon_separation":40.4,"score":null,"score_astronomy":42,"score_weather":null,"transit_alt":71.1,"transit_local":"02:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.58,"best_label":"good","best_window":"23:05\u201300:40","dark_hours":4.8,"date":"2047-07-10","moon_free_dark_hours":0.0,"moon_illumination":86,"moon_separation":43.7,"score":null,"score_astronomy":53,"score_weather":null,"transit_alt":71.1,"transit_local":"02:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.33,"best_label":"good","best_window":"23:05\u201302:25","dark_hours":4.83,"date":"2047-07-11","moon_free_dark_hours":0.12,"moon_illumination":78,"moon_separation":49.6,"score":null,"score_astronomy":88,"score_weather":null,"transit_alt":71.2,"transit_local":"02:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.83,"best_label":"good","best_window":"23:05\u201303:55","dark_hours":4.87,"date":"2047-07-12","moon_free_dark_hours":0.52,"moon_illumination":70,"moon_separation":56.9,"score":null,"score_astronomy":96,"score_weather":null,"transit_alt":71.2,"transit_local":"02:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.92,"best_label":"good","best_window":"23:00\u201303:55","dark_hours":4.91,"date":"2047-07-13","moon_free_dark_hours":0.9,"moon_illumination":60,"moon_separation":65.1,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":71.1,"transit_local":"01:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.0,"best_label":"good","best_window":"23:00\u201304:00","dark_hours":4.95,"date":"2047-07-14","moon_free_dark_hours":1.32,"moon_illumination":51,"moon_separation":73.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.0,"best_label":"good","best_window":"23:00\u201304:00","dark_hours":5.0,"date":"2047-07-15","moon_free_dark_hours":1.77,"moon_illumination":41,"moon_separation":82.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"01:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.0,"best_label":"good","best_window":"23:00\u201304:00","dark_hours":5.04,"date":"2047-07-16","moon_free_dark_hours":2.3,"moon_illumination":32,"moon_separation":91.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"01:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.0,"best_label":"good","best_window":"23:00\u201304:00","dark_hours":5.08,"date":"2047-07-17","moon_free_dark_hours":2.92,"moon_illumination":24,"moon_separation":100.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"01:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.13,"date":"2047-07-18","moon_free_dark_hours":3.67,"moon_illumination":16,"moon_separation":109.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.17,"date":"2047-07-19","moon_free_dark_hours":4.52,"moon_illumination":9,"moon_separation":118.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.22,"date":"2047-07-20","moon_free_dark_hours":5.2,"moon_illumination":4,"moon_separation":126.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"01:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.27,"date":"2047-07-21","moon_free_dark_hours":5.25,"moon_illumination":1,"moon_separation":133.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.2,"transit_local":"01:25","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":"2047-06-22","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}}