{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":2.0,"best_label":"good","best_window":"01:00\u201303:00","dark_hours":5.1,"date":"2025-07-17","moon_free_dark_hours":1.47,"moon_illumination":51,"moon_separation":65.0,"score":49,"score_astronomy":100,"score_weather":49,"transit_alt":87.3,"transit_local":"02:35","verdict":"marginal","weather_source":"history","weekday":"Thu"},{"best_hours":5.08,"best_label":"good","best_window":"22:55\u201304:00","dark_hours":5.14,"date":"2025-07-18","moon_free_dark_hours":1.93,"moon_illumination":40,"moon_separation":70.6,"score":93,"score_astronomy":100,"score_weather":93,"transit_alt":87.3,"transit_local":"02:35","verdict":"good","weather_source":"history","weekday":"Fri"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.19,"date":"2025-07-19","moon_free_dark_hours":2.53,"moon_illumination":29,"moon_separation":77.3,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"02:30","verdict":"good","weather_source":"history","weekday":"Sat"},{"best_hours":5.17,"best_label":"good","best_window":"22:55\u201304:05","dark_hours":5.24,"date":"2025-07-20","moon_free_dark_hours":3.25,"moon_illumination":19,"moon_separation":84.6,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"02:25","verdict":"good","weather_source":"history","weekday":"Sun"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.28,"date":"2025-07-21","moon_free_dark_hours":4.17,"moon_illumination":11,"moon_separation":92.2,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"02:20","verdict":"good","weather_source":"history","weekday":"Mon"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.33,"date":"2025-07-22","moon_free_dark_hours":5.27,"moon_illumination":5,"moon_separation":99.7,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"02:15","verdict":"good","weather_source":"history","weekday":"Tue"},{"best_hours":5.33,"best_label":"good","best_window":"22:50\u201304:10","dark_hours":5.38,"date":"2025-07-23","moon_free_dark_hours":5.37,"moon_illumination":1,"moon_separation":106.6,"score":92,"score_astronomy":100,"score_weather":92,"transit_alt":87.3,"transit_local":"02:15","verdict":"good","weather_source":"history","weekday":"Wed"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.43,"date":"2025-07-24","moon_free_dark_hours":5.42,"moon_illumination":0,"moon_separation":112.6,"score":99,"score_astronomy":100,"score_weather":99,"transit_alt":87.3,"transit_local":"02:10","verdict":"good","weather_source":"history","weekday":"Thu"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.48,"date":"2025-07-25","moon_free_dark_hours":5.47,"moon_illumination":2,"moon_separation":117.4,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"02:05","verdict":"good","weather_source":"history","weekday":"Fri"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.54,"date":"2025-07-26","moon_free_dark_hours":5.52,"moon_illumination":5,"moon_separation":120.6,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"02:00","verdict":"good","weather_source":"history","weekday":"Sat"},{"best_hours":5.58,"best_label":"good","best_window":"22:45\u201304:20","dark_hours":5.59,"date":"2025-07-27","moon_free_dark_hours":5.57,"moon_illumination":11,"moon_separation":122.0,"score":96,"score_astronomy":100,"score_weather":96,"transit_alt":87.3,"transit_local":"01:55","verdict":"good","weather_source":"history","weekday":"Sun"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.64,"date":"2025-07-28","moon_free_dark_hours":5.63,"moon_illumination":18,"moon_separation":121.7,"score":99,"score_astronomy":100,"score_weather":99,"transit_alt":87.3,"transit_local":"01:55","verdict":"good","weather_source":"history","weekday":"Mon"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.7,"date":"2025-07-29","moon_free_dark_hours":5.42,"moon_illumination":26,"moon_separation":119.7,"score":90,"score_astronomy":100,"score_weather":90,"transit_alt":87.3,"transit_local":"01:50","verdict":"good","weather_source":"history","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":5.75,"date":"2025-07-30","moon_free_dark_hours":5.13,"moon_illumination":35,"moon_separation":116.4,"score":0,"score_astronomy":100,"score_weather":0,"transit_alt":87.3,"transit_local":"01:45","verdict":"unusable","weather_source":"history","weekday":"Wed"},{"best_hours":0.42,"best_label":"good","best_window":"04:00\u201304:25","dark_hours":5.81,"date":"2025-07-31","moon_free_dark_hours":4.8,"moon_illumination":44,"moon_separation":112.0,"score":8,"score_astronomy":100,"score_weather":8,"transit_alt":87.3,"transit_local":"01:40","verdict":"poor","weather_source":"history","weekday":"Thu"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.86,"date":"2025-08-01","moon_free_dark_hours":4.45,"moon_illumination":54,"moon_separation":106.9,"score":86,"score_astronomy":100,"score_weather":86,"transit_alt":87.3,"transit_local":"01:40","verdict":"good","weather_source":"history","weekday":"Fri"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.92,"date":"2025-08-02","moon_free_dark_hours":4.0,"moon_illumination":63,"moon_separation":101.1,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"01:35","verdict":"good","weather_source":"history","weekday":"Sat"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":5.97,"date":"2025-08-03","moon_free_dark_hours":3.47,"moon_illumination":72,"moon_separation":94.9,"score":99,"score_astronomy":100,"score_weather":99,"transit_alt":87.3,"transit_local":"01:30","verdict":"good","weather_source":"history","weekday":"Sun"},{"best_hours":2.0,"best_label":"good","best_window":"02:00\u201304:00","dark_hours":6.03,"date":"2025-08-04","moon_free_dark_hours":2.77,"moon_illumination":80,"moon_separation":88.5,"score":44,"score_astronomy":100,"score_weather":44,"transit_alt":87.3,"transit_local":"01:25","verdict":"marginal","weather_source":"history","weekday":"Mon"},{"best_hours":2.0,"best_label":"good","best_window":"00:00\u201302:00","dark_hours":6.08,"date":"2025-08-05","moon_free_dark_hours":1.9,"moon_illumination":88,"moon_separation":82.0,"score":67,"score_astronomy":100,"score_weather":67,"transit_alt":87.3,"transit_local":"01:20","verdict":"marginal","weather_source":"history","weekday":"Tue"},{"best_hours":2.58,"best_label":"good","best_window":"02:00\u201304:35","dark_hours":6.14,"date":"2025-08-06","moon_free_dark_hours":0.88,"moon_illumination":94,"moon_separation":75.7,"score":38,"score_astronomy":100,"score_weather":38,"transit_alt":87.3,"transit_local":"01:20","verdict":"poor","weather_source":"history","weekday":"Wed"},{"best_hours":0.58,"best_label":"good","best_window":"04:00\u201304:35","dark_hours":6.2,"date":"2025-08-07","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":69.7,"score":24,"score_astronomy":72,"score_weather":33,"transit_alt":87.3,"transit_local":"01:15","verdict":"poor","weather_source":"history","weekday":"Thu"},{"best_hours":2.67,"best_label":"good","best_window":"01:55\u201304:35","dark_hours":6.25,"date":"2025-08-08","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":64.5,"score":64,"score_astronomy":64,"score_weather":100,"transit_alt":87.3,"transit_local":"01:10","verdict":"marginal","weather_source":"history","weekday":"Fri"},{"best_hours":1.17,"best_label":"good","best_window":"22:20\u201323:30","dark_hours":6.31,"date":"2025-08-09","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":60.6,"score":64,"score_astronomy":64,"score_weather":100,"transit_alt":87.3,"transit_local":"01:05","verdict":"marginal","weather_source":"history","weekday":"Sat"},{"best_hours":1.25,"best_label":"good","best_window":"22:20\u201323:35","dark_hours":6.37,"date":"2025-08-10","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":58.3,"score":66,"score_astronomy":66,"score_weather":100,"transit_alt":87.3,"transit_local":"01:00","verdict":"marginal","weather_source":"history","weekday":"Sun"},{"best_hours":2.08,"best_label":"good","best_window":"22:15\u201300:20","dark_hours":6.43,"date":"2025-08-11","moon_free_dark_hours":0.0,"moon_illumination":92,"moon_separation":58.0,"score":70,"score_astronomy":70,"score_weather":100,"transit_alt":87.3,"transit_local":"01:00","verdict":"good","weather_source":"history","weekday":"Mon"},{"best_hours":3.42,"best_label":"good","best_window":"22:15\u201301:40","dark_hours":6.48,"date":"2025-08-12","moon_free_dark_hours":0.0,"moon_illumination":84,"moon_separation":59.9,"score":74,"score_astronomy":74,"score_weather":100,"transit_alt":87.3,"transit_local":"00:55","verdict":"good","weather_source":"history","weekday":"Tue"},{"best_hours":5.83,"best_label":"good","best_window":"22:10\u201304:00","dark_hours":6.54,"date":"2025-08-13","moon_free_dark_hours":0.3,"moon_illumination":75,"moon_separation":63.7,"score":100,"score_astronomy":100,"score_weather":100,"transit_alt":87.3,"transit_local":"00:50","verdict":"good","weather_source":"history","weekday":"Wed"},{"best_hours":5.67,"best_label":"good","best_window":"22:10\u201303:50","dark_hours":6.6,"date":"2025-08-14","moon_free_dark_hours":0.77,"moon_illumination":65,"moon_separation":69.1,"score":83,"score_astronomy":100,"score_weather":83,"transit_alt":87.3,"transit_local":"00:45","verdict":"good","weather_source":"history","weekday":"Thu"},{"best_hours":6.67,"best_label":"good","best_window":"22:10\u201304:50","dark_hours":6.66,"date":"2025-08-15","moon_free_dark_hours":1.32,"moon_illumination":53,"moon_separation":75.6,"score":99,"score_astronomy":100,"score_weather":99,"transit_alt":87.3,"transit_local":"00:45","verdict":"good","weather_source":"history","weekday":"Fri"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2025-07-17","target":{"dec":44.25788576,"name":"EM* LkHA 190","ra":314.72388973,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=V1057%20Cyg","source":"sesame","spectral_type":"F7/G3I/IIe","type":"Or*","type_text":"Orion-type variable \u2014 a young, erupting star","vmag":12.33}}
