{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":7.75,"best_label":"good","best_window":"21:30\u201305:15","dark_hours":7.8,"date":"2041-09-04","moon_free_dark_hours":5.0,"moon_illumination":63,"moon_separation":83.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.92,"best_label":"good","best_window":"21:25\u201305:20","dark_hours":7.85,"date":"2041-09-05","moon_free_dark_hours":4.02,"moon_illumination":73,"moon_separation":77.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.92,"best_label":"good","best_window":"21:25\u201305:20","dark_hours":7.91,"date":"2041-09-06","moon_free_dark_hours":2.85,"moon_illumination":83,"moon_separation":71.6,"score":null,"score_astronomy":97,"score_weather":null,"transit_alt":87.3,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.92,"best_label":"good","best_window":"21:25\u201305:20","dark_hours":7.96,"date":"2041-09-07","moon_free_dark_hours":1.53,"moon_illumination":91,"moon_separation":66.7,"score":null,"score_astronomy":87,"score_weather":null,"transit_alt":87.2,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.83,"best_label":"good","best_window":"21:20\u201323:10","dark_hours":8.02,"date":"2041-09-08","moon_free_dark_hours":0.18,"moon_illumination":96,"moon_separation":63.3,"score":null,"score_astronomy":69,"score_weather":null,"transit_alt":87.3,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.92,"best_label":"good","best_window":"21:20\u201322:15","dark_hours":8.07,"date":"2041-09-09","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":61.7,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.3,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.25,"best_label":"good","best_window":"21:15\u201322:30","dark_hours":8.13,"date":"2041-09-10","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":62.3,"score":null,"score_astronomy":66,"score_weather":null,"transit_alt":87.3,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.17,"best_label":"good","best_window":"21:15\u201323:25","dark_hours":8.18,"date":"2041-09-11","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":64.9,"score":null,"score_astronomy":70,"score_weather":null,"transit_alt":87.3,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.92,"best_label":"good","best_window":"21:15\u201301:10","dark_hours":8.23,"date":"2041-09-12","moon_free_dark_hours":0.0,"moon_illumination":91,"moon_separation":69.2,"score":null,"score_astronomy":75,"score_weather":null,"transit_alt":87.2,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.33,"best_label":"good","best_window":"21:10\u201302:30","dark_hours":8.29,"date":"2041-09-13","moon_free_dark_hours":0.27,"moon_illumination":83,"moon_separation":74.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.42,"best_label":"good","best_window":"21:10\u201303:35","dark_hours":8.34,"date":"2041-09-14","moon_free_dark_hours":0.8,"moon_illumination":74,"moon_separation":80.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.42,"best_label":"good","best_window":"21:05\u201304:30","dark_hours":8.39,"date":"2041-09-15","moon_free_dark_hours":1.42,"moon_illumination":63,"moon_separation":86.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.5,"best_label":"good","best_window":"21:05\u201304:35","dark_hours":8.44,"date":"2041-09-16","moon_free_dark_hours":2.13,"moon_illumination":53,"moon_separation":93.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.58,"best_label":"good","best_window":"21:05\u201304:40","dark_hours":8.5,"date":"2041-09-17","moon_free_dark_hours":2.98,"moon_illumination":43,"moon_separation":98.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.67,"best_label":"good","best_window":"21:00\u201304:40","dark_hours":8.55,"date":"2041-09-18","moon_free_dark_hours":3.95,"moon_illumination":33,"moon_separation":104.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.67,"best_label":"good","best_window":"21:00\u201304:40","dark_hours":8.6,"date":"2041-09-19","moon_free_dark_hours":5.0,"moon_illumination":25,"moon_separation":109.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.75,"best_label":"good","best_window":"20:55\u201304:40","dark_hours":8.65,"date":"2041-09-20","moon_free_dark_hours":6.07,"moon_illumination":17,"moon_separation":113.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.67,"best_label":"good","best_window":"20:55\u201304:35","dark_hours":8.7,"date":"2041-09-21","moon_free_dark_hours":7.13,"moon_illumination":10,"moon_separation":116.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.67,"best_label":"good","best_window":"20:55\u201304:35","dark_hours":8.75,"date":"2041-09-22","moon_free_dark_hours":8.2,"moon_illumination":5,"moon_separation":117.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.67,"best_label":"good","best_window":"20:50\u201304:30","dark_hours":8.8,"date":"2041-09-23","moon_free_dark_hours":8.78,"moon_illumination":2,"moon_separation":118.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.58,"best_label":"good","best_window":"20:50\u201304:25","dark_hours":8.85,"date":"2041-09-24","moon_free_dark_hours":8.83,"moon_illumination":0,"moon_separation":117.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.5,"best_label":"good","best_window":"20:50\u201304:20","dark_hours":8.9,"date":"2041-09-25","moon_free_dark_hours":8.88,"moon_illumination":0,"moon_separation":115.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.58,"best_label":"good","best_window":"20:45\u201304:20","dark_hours":8.95,"date":"2041-09-26","moon_free_dark_hours":8.93,"moon_illumination":2,"moon_separation":112.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.5,"best_label":"good","best_window":"20:45\u201304:15","dark_hours":9.0,"date":"2041-09-27","moon_free_dark_hours":9.0,"moon_illumination":6,"moon_separation":108.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"21:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.42,"best_label":"good","best_window":"20:45\u201304:10","dark_hours":9.05,"date":"2041-09-28","moon_free_dark_hours":9.03,"moon_illumination":12,"moon_separation":103.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"21:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.42,"best_label":"good","best_window":"20:40\u201304:05","dark_hours":9.1,"date":"2041-09-29","moon_free_dark_hours":8.87,"moon_illumination":19,"moon_separation":97.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"21:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.33,"best_label":"good","best_window":"20:40\u201304:00","dark_hours":9.15,"date":"2041-09-30","moon_free_dark_hours":8.32,"moon_illumination":27,"moon_separation":91.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"21:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.42,"best_label":"good","best_window":"20:35\u201304:00","dark_hours":9.2,"date":"2041-10-01","moon_free_dark_hours":7.63,"moon_illumination":37,"moon_separation":85.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"21:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.33,"best_label":"good","best_window":"20:35\u201303:55","dark_hours":9.24,"date":"2041-10-02","moon_free_dark_hours":6.75,"moon_illumination":48,"moon_separation":79.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"21:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.25,"best_label":"good","best_window":"20:35\u201303:50","dark_hours":9.29,"date":"2041-10-03","moon_free_dark_hours":5.68,"moon_illumination":59,"moon_separation":73.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"21:30","verdict":"unknown","weather_source":"none","weekday":"Thu"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2041-09-04","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}}