{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":4.83,"best_label":"good","best_window":"23:05\u201303:55","dark_hours":4.79,"date":"2035-07-10","moon_free_dark_hours":3.58,"moon_illumination":36,"moon_separation":114.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.83,"best_label":"good","best_window":"23:05\u201303:55","dark_hours":4.83,"date":"2035-07-11","moon_free_dark_hours":3.08,"moon_illumination":46,"moon_separation":105.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":4.83,"best_label":"good","best_window":"23:05\u201303:55","dark_hours":4.87,"date":"2035-07-12","moon_free_dark_hours":2.6,"moon_illumination":56,"moon_separation":95.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"02:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.92,"best_label":"good","best_window":"23:00\u201303:55","dark_hours":4.91,"date":"2035-07-13","moon_free_dark_hours":2.1,"moon_illumination":66,"moon_separation":86.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.0,"best_label":"good","best_window":"23:00\u201304:00","dark_hours":4.95,"date":"2035-07-14","moon_free_dark_hours":1.57,"moon_illumination":75,"moon_separation":76.9,"score":null,"score_astronomy":100,"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":4.99,"date":"2035-07-15","moon_free_dark_hours":1.0,"moon_illumination":82,"moon_separation":68.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.42,"best_label":"good","best_window":"23:35\u201304:00","dark_hours":5.03,"date":"2035-07-16","moon_free_dark_hours":0.38,"moon_illumination":89,"moon_separation":59.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.83,"best_label":"good","best_window":"02:10\u201304:00","dark_hours":5.08,"date":"2035-07-17","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":52.2,"score":null,"score_astronomy":60,"score_weather":null,"transit_alt":71.1,"transit_local":"01:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.17,"best_label":"marginal","best_window":"22:55\u201304:05","dark_hours":5.12,"date":"2035-07-18","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":45.9,"score":null,"score_astronomy":48,"score_weather":null,"transit_alt":71.1,"transit_local":"01:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"marginal","best_window":"22:55\u201304:05","dark_hours":5.17,"date":"2035-07-19","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":41.5,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":71.1,"transit_local":"01:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.17,"best_label":"marginal","best_window":"22:55\u201304:05","dark_hours":5.22,"date":"2035-07-20","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":39.7,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":71.1,"transit_local":"01:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.33,"best_label":"marginal","best_window":"22:50\u201304:10","dark_hours":5.26,"date":"2035-07-21","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":40.9,"score":null,"score_astronomy":40,"score_weather":null,"transit_alt":71.1,"transit_local":"01:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.33,"best_label":"marginal","best_window":"22:50\u201304:10","dark_hours":5.31,"date":"2035-07-22","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":44.9,"score":null,"score_astronomy":49,"score_weather":null,"transit_alt":71.1,"transit_local":"01:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.08,"best_label":"good","best_window":"22:50\u201300:55","dark_hours":5.36,"date":"2035-07-23","moon_free_dark_hours":0.0,"moon_illumination":89,"moon_separation":51.2,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":71.1,"transit_local":"01:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.5,"best_label":"good","best_window":"22:50\u201303:20","dark_hours":5.41,"date":"2035-07-24","moon_free_dark_hours":0.32,"moon_illumination":82,"moon_separation":59.1,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":71.1,"transit_local":"01:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.46,"date":"2035-07-25","moon_free_dark_hours":0.87,"moon_illumination":73,"moon_separation":68.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.52,"date":"2035-07-26","moon_free_dark_hours":1.4,"moon_illumination":63,"moon_separation":77.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.57,"date":"2035-07-27","moon_free_dark_hours":2.0,"moon_illumination":52,"moon_separation":88.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.62,"date":"2035-07-28","moon_free_dark_hours":2.63,"moon_illumination":41,"moon_separation":98.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"01:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.67,"date":"2035-07-29","moon_free_dark_hours":3.37,"moon_illumination":30,"moon_separation":109.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.73,"date":"2035-07-30","moon_free_dark_hours":4.2,"moon_illumination":20,"moon_separation":119.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.78,"date":"2035-07-31","moon_free_dark_hours":5.15,"moon_illumination":11,"moon_separation":129.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.84,"date":"2035-08-01","moon_free_dark_hours":5.82,"moon_illumination":5,"moon_separation":136.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.89,"date":"2035-08-02","moon_free_dark_hours":5.88,"moon_illumination":1,"moon_separation":140.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":5.95,"date":"2035-08-03","moon_free_dark_hours":5.93,"moon_illumination":0,"moon_separation":139.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":6.0,"date":"2035-08-04","moon_free_dark_hours":5.98,"moon_illumination":2,"moon_separation":134.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":6.06,"date":"2035-08-05","moon_free_dark_hours":6.05,"moon_illumination":7,"moon_separation":127.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.12,"date":"2035-08-06","moon_free_dark_hours":6.1,"moon_illumination":13,"moon_separation":118.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.17,"date":"2035-08-07","moon_free_dark_hours":5.77,"moon_illumination":22,"moon_separation":108.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.25,"best_label":"good","best_window":"22:20\u201304:35","dark_hours":6.23,"date":"2035-08-08","moon_free_dark_hours":5.27,"moon_illumination":31,"moon_separation":98.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":71.1,"transit_local":"00:15","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":"2035-07-10","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}}