{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":1.33,"best_label":"good","best_window":"03:45\u201305:05","dark_hours":9.14,"date":"2027-03-12","moon_free_dark_hours":5.98,"moon_illumination":21,"moon_separation":73.6,"score":null,"score_astronomy":35,"score_weather":null,"transit_alt":87.3,"transit_local":"10:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.42,"best_label":"good","best_window":"03:40\u201305:05","dark_hours":9.09,"date":"2027-03-13","moon_free_dark_hours":4.75,"moon_illumination":31,"moon_separation":80.9,"score":null,"score_astronomy":37,"score_weather":null,"transit_alt":87.3,"transit_local":"09:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.5,"best_label":"good","best_window":"03:35\u201305:05","dark_hours":9.04,"date":"2027-03-14","moon_free_dark_hours":3.57,"moon_illumination":42,"moon_separation":88.7,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":87.3,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.5,"best_label":"good","best_window":"03:30\u201305:00","dark_hours":8.99,"date":"2027-03-15","moon_free_dark_hours":2.5,"moon_illumination":53,"moon_separation":96.6,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":87.3,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.5,"best_label":"good","best_window":"03:30\u201305:00","dark_hours":8.94,"date":"2027-03-16","moon_free_dark_hours":1.58,"moon_illumination":64,"moon_separation":104.3,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":87.3,"transit_local":"09:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.42,"best_label":"good","best_window":"03:35\u201305:00","dark_hours":8.89,"date":"2027-03-17","moon_free_dark_hours":0.83,"moon_illumination":75,"moon_separation":111.5,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":87.3,"transit_local":"09:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.42,"best_label":"good","best_window":"03:30\u201304:55","dark_hours":8.84,"date":"2027-03-18","moon_free_dark_hours":0.23,"moon_illumination":84,"moon_separation":117.6,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":87.3,"transit_local":"09:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.5,"best_label":"good","best_window":"03:25\u201304:55","dark_hours":8.79,"date":"2027-03-19","moon_free_dark_hours":0.0,"moon_illumination":92,"moon_separation":122.1,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":87.3,"transit_local":"09:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.5,"best_label":"good","best_window":"03:25\u201304:55","dark_hours":8.73,"date":"2027-03-20","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":124.4,"score":null,"score_astronomy":35,"score_weather":null,"transit_alt":87.3,"transit_local":"09:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.5,"best_label":"good","best_window":"03:20\u201304:50","dark_hours":8.68,"date":"2027-03-21","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":124.2,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":87.3,"transit_local":"09:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.5,"best_label":"good","best_window":"03:20\u201304:50","dark_hours":8.63,"date":"2027-03-22","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":121.8,"score":null,"score_astronomy":35,"score_weather":null,"transit_alt":87.3,"transit_local":"09:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.5,"best_label":"good","best_window":"03:15\u201304:45","dark_hours":8.58,"date":"2027-03-23","moon_free_dark_hours":0.03,"moon_illumination":97,"moon_separation":117.5,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":87.3,"transit_local":"09:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.5,"best_label":"good","best_window":"03:15\u201304:45","dark_hours":8.53,"date":"2027-03-24","moon_free_dark_hours":1.2,"moon_illumination":92,"moon_separation":111.8,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":87.3,"transit_local":"09:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.58,"best_label":"good","best_window":"03:10\u201304:45","dark_hours":8.47,"date":"2027-03-25","moon_free_dark_hours":2.35,"moon_illumination":86,"moon_separation":105.4,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":87.3,"transit_local":"09:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.5,"best_label":"good","best_window":"03:10\u201304:40","dark_hours":8.42,"date":"2027-03-26","moon_free_dark_hours":3.47,"moon_illumination":78,"moon_separation":98.5,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":87.3,"transit_local":"09:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.58,"best_label":"good","best_window":"04:05\u201305:40","dark_hours":8.37,"date":"2027-03-27","moon_free_dark_hours":4.47,"moon_illumination":70,"moon_separation":91.6,"score":null,"score_astronomy":33,"score_weather":null,"transit_alt":87.3,"transit_local":"10:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.75,"best_label":"good","best_window":"03:55\u201305:40","dark_hours":8.31,"date":"2027-03-28","moon_free_dark_hours":5.35,"moon_illumination":60,"moon_separation":84.7,"score":null,"score_astronomy":35,"score_weather":null,"transit_alt":87.3,"transit_local":"09:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.75,"best_label":"good","best_window":"03:50\u201305:35","dark_hours":8.26,"date":"2027-03-29","moon_free_dark_hours":6.1,"moon_illumination":51,"moon_separation":78.1,"score":null,"score_astronomy":37,"score_weather":null,"transit_alt":87.3,"transit_local":"09:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.0,"best_label":"good","best_window":"03:35\u201305:35","dark_hours":8.2,"date":"2027-03-30","moon_free_dark_hours":6.7,"moon_illumination":42,"moon_separation":71.9,"score":null,"score_astronomy":40,"score_weather":null,"transit_alt":87.3,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.0,"best_label":"good","best_window":"03:30\u201305:30","dark_hours":8.15,"date":"2027-03-31","moon_free_dark_hours":7.2,"moon_illumination":32,"moon_separation":66.3,"score":null,"score_astronomy":45,"score_weather":null,"transit_alt":87.3,"transit_local":"09:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":2.08,"best_label":"good","best_window":"03:25\u201305:30","dark_hours":8.1,"date":"2027-04-01","moon_free_dark_hours":7.62,"moon_illumination":24,"moon_separation":61.6,"score":null,"score_astronomy":49,"score_weather":null,"transit_alt":87.3,"transit_local":"09:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.17,"best_label":"good","best_window":"03:20\u201305:30","dark_hours":8.04,"date":"2027-04-02","moon_free_dark_hours":7.97,"moon_illumination":16,"moon_separation":58.0,"score":null,"score_astronomy":52,"score_weather":null,"transit_alt":87.3,"transit_local":"09:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.17,"best_label":"good","best_window":"03:15\u201305:25","dark_hours":7.99,"date":"2027-04-03","moon_free_dark_hours":7.97,"moon_illumination":10,"moon_separation":55.8,"score":null,"score_astronomy":54,"score_weather":null,"transit_alt":87.3,"transit_local":"09:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.17,"best_label":"good","best_window":"03:15\u201305:25","dark_hours":7.93,"date":"2027-04-04","moon_free_dark_hours":7.92,"moon_illumination":5,"moon_separation":55.5,"score":null,"score_astronomy":55,"score_weather":null,"transit_alt":87.3,"transit_local":"09:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.17,"best_label":"good","best_window":"03:10\u201305:20","dark_hours":7.87,"date":"2027-04-05","moon_free_dark_hours":7.85,"moon_illumination":1,"moon_separation":57.0,"score":null,"score_astronomy":55,"score_weather":null,"transit_alt":87.3,"transit_local":"09:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.25,"best_label":"good","best_window":"03:05\u201305:20","dark_hours":7.82,"date":"2027-04-06","moon_free_dark_hours":7.8,"moon_illumination":0,"moon_separation":60.5,"score":null,"score_astronomy":56,"score_weather":null,"transit_alt":87.3,"transit_local":"09:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.33,"best_label":"good","best_window":"03:00\u201305:20","dark_hours":7.76,"date":"2027-04-07","moon_free_dark_hours":7.75,"moon_illumination":1,"moon_separation":65.5,"score":null,"score_astronomy":58,"score_weather":null,"transit_alt":87.3,"transit_local":"09:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":2.33,"best_label":"good","best_window":"02:55\u201305:15","dark_hours":7.71,"date":"2027-04-08","moon_free_dark_hours":7.35,"moon_illumination":5,"moon_separation":71.9,"score":null,"score_astronomy":58,"score_weather":null,"transit_alt":87.3,"transit_local":"09:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.33,"best_label":"good","best_window":"02:55\u201305:15","dark_hours":7.65,"date":"2027-04-09","moon_free_dark_hours":6.08,"moon_illumination":10,"moon_separation":79.2,"score":null,"score_astronomy":59,"score_weather":null,"transit_alt":87.3,"transit_local":"09:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":2.33,"best_label":"good","best_window":"02:50\u201305:10","dark_hours":7.59,"date":"2027-04-10","moon_free_dark_hours":4.85,"moon_illumination":18,"moon_separation":87.0,"score":null,"score_astronomy":59,"score_weather":null,"transit_alt":87.3,"transit_local":"09:05","verdict":"unknown","weather_source":"none","weekday":"Sat"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2027-03-12","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}}