{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.51,"date":"2027-07-26","moon_free_dark_hours":1.4,"moon_illumination":48,"moon_separation":95.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.56,"date":"2027-07-27","moon_free_dark_hours":1.98,"moon_illumination":37,"moon_separation":100.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.62,"date":"2027-07-28","moon_free_dark_hours":2.72,"moon_illumination":27,"moon_separation":106.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.67,"date":"2027-07-29","moon_free_dark_hours":3.65,"moon_illumination":17,"moon_separation":110.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.67,"best_label":"good","best_window":"22:40\u201304:20","dark_hours":5.72,"date":"2027-07-30","moon_free_dark_hours":4.8,"moon_illumination":9,"moon_separation":114.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.78,"date":"2027-07-31","moon_free_dark_hours":5.77,"moon_illumination":3,"moon_separation":116.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.83,"date":"2027-08-01","moon_free_dark_hours":5.82,"moon_illumination":0,"moon_separation":116.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.83,"best_label":"good","best_window":"22:35\u201304:25","dark_hours":5.89,"date":"2027-08-02","moon_free_dark_hours":5.88,"moon_illumination":0,"moon_separation":114.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":5.94,"date":"2027-08-03","moon_free_dark_hours":5.92,"moon_illumination":4,"moon_separation":110.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":6.0,"date":"2027-08-04","moon_free_dark_hours":5.98,"moon_illumination":9,"moon_separation":105.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.0,"best_label":"good","best_window":"22:30\u201304:30","dark_hours":6.06,"date":"2027-08-05","moon_free_dark_hours":6.03,"moon_illumination":17,"moon_separation":99.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.11,"date":"2027-08-06","moon_free_dark_hours":6.08,"moon_illumination":26,"moon_separation":93.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.17,"date":"2027-08-07","moon_free_dark_hours":5.7,"moon_illumination":37,"moon_separation":87.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.17,"best_label":"good","best_window":"22:25\u201304:35","dark_hours":6.23,"date":"2027-08-08","moon_free_dark_hours":5.22,"moon_illumination":47,"moon_separation":82.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.33,"best_label":"good","best_window":"22:20\u201304:40","dark_hours":6.28,"date":"2027-08-09","moon_free_dark_hours":4.7,"moon_illumination":57,"moon_separation":76.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":6.33,"best_label":"good","best_window":"22:20\u201304:40","dark_hours":6.34,"date":"2027-08-10","moon_free_dark_hours":4.03,"moon_illumination":67,"moon_separation":72.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.42,"best_label":"good","best_window":"22:15\u201304:40","dark_hours":6.4,"date":"2027-08-11","moon_free_dark_hours":3.28,"moon_illumination":76,"moon_separation":68.6,"score":null,"score_astronomy":99,"score_weather":null,"transit_alt":87.1,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.33,"best_label":"good","best_window":"22:15\u201304:35","dark_hours":6.46,"date":"2027-08-12","moon_free_dark_hours":2.38,"moon_illumination":84,"moon_separation":65.8,"score":null,"score_astronomy":92,"score_weather":null,"transit_alt":87.1,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.25,"best_label":"good","best_window":"22:15\u201304:30","dark_hours":6.51,"date":"2027-08-13","moon_free_dark_hours":1.43,"moon_illumination":90,"moon_separation":64.2,"score":null,"score_astronomy":84,"score_weather":null,"transit_alt":87.1,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.25,"best_label":"good","best_window":"22:10\u201302:25","dark_hours":6.57,"date":"2027-08-14","moon_free_dark_hours":0.43,"moon_illumination":95,"moon_separation":63.7,"score":null,"score_astronomy":64,"score_weather":null,"transit_alt":87.1,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.5,"best_label":"good","best_window":"22:10\u201323:40","dark_hours":6.63,"date":"2027-08-15","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":64.4,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.1,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.42,"best_label":"good","best_window":"22:05\u201323:30","dark_hours":6.69,"date":"2027-08-16","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":66.3,"score":null,"score_astronomy":62,"score_weather":null,"transit_alt":87.1,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.0,"best_label":"good","best_window":"22:05\u201300:05","dark_hours":6.74,"date":"2027-08-17","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":69.2,"score":null,"score_astronomy":65,"score_weather":null,"transit_alt":87.1,"transit_local":"22:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":2.92,"best_label":"good","best_window":"22:05\u201301:00","dark_hours":6.8,"date":"2027-08-18","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":73.0,"score":null,"score_astronomy":69,"score_weather":null,"transit_alt":87.1,"transit_local":"22:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.5,"best_label":"good","best_window":"22:00\u201301:30","dark_hours":6.86,"date":"2027-08-19","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":77.6,"score":null,"score_astronomy":74,"score_weather":null,"transit_alt":87.1,"transit_local":"22:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.17,"best_label":"good","best_window":"22:00\u201302:10","dark_hours":6.92,"date":"2027-08-20","moon_free_dark_hours":0.0,"moon_illumination":88,"moon_separation":82.6,"score":null,"score_astronomy":79,"score_weather":null,"transit_alt":87.1,"transit_local":"22:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.92,"best_label":"good","best_window":"22:00\u201302:55","dark_hours":6.97,"date":"2027-08-21","moon_free_dark_hours":0.0,"moon_illumination":81,"moon_separation":88.1,"score":null,"score_astronomy":84,"score_weather":null,"transit_alt":87.1,"transit_local":"22:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.58,"best_label":"good","best_window":"21:55\u201303:30","dark_hours":7.03,"date":"2027-08-22","moon_free_dark_hours":0.27,"moon_illumination":72,"moon_separation":93.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"21:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.58,"best_label":"good","best_window":"21:55\u201303:30","dark_hours":7.09,"date":"2027-08-23","moon_free_dark_hours":0.82,"moon_illumination":62,"moon_separation":99.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"21:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.75,"best_label":"good","best_window":"21:50\u201303:35","dark_hours":7.15,"date":"2027-08-24","moon_free_dark_hours":1.47,"moon_illumination":52,"moon_separation":104.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"21:50","verdict":"unknown","weather_source":"none","weekday":"Tue"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2027-07-26","target":{"common_name":"Vega","dec":38.78368896,"name":"* alf Lyr","ra":279.23473479,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=Vega","source":"sesame","spectral_type":"A0V","type":"dS*","type_text":"delta Scuti variable","vmag":0.03}}