{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":4.0,"best_label":"good","best_window":"00:35\u201304:35","dark_hours":6.41,"date":"2029-04-30","moon_free_dark_hours":1.18,"moon_illumination":91,"moon_separation":67.5,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.1,"transit_local":"05:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.08,"best_label":"good","best_window":"23:25\u201304:30","dark_hours":6.35,"date":"2029-05-01","moon_free_dark_hours":2.13,"moon_illumination":84,"moon_separation":63.5,"score":null,"score_astronomy":83,"score_weather":null,"transit_alt":87.1,"transit_local":"05:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.17,"best_label":"good","best_window":"23:20\u201304:30","dark_hours":6.29,"date":"2029-05-02","moon_free_dark_hours":2.9,"moon_illumination":75,"moon_separation":61.1,"score":null,"score_astronomy":88,"score_weather":null,"transit_alt":87.1,"transit_local":"05:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"good","best_window":"23:15\u201304:25","dark_hours":6.23,"date":"2029-05-03","moon_free_dark_hours":3.53,"moon_illumination":65,"moon_separation":60.5,"score":null,"score_astronomy":94,"score_weather":null,"transit_alt":87.1,"transit_local":"05:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.25,"best_label":"good","best_window":"23:10\u201304:25","dark_hours":6.17,"date":"2029-05-04","moon_free_dark_hours":4.03,"moon_illumination":55,"moon_separation":61.6,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":87.1,"transit_local":"05:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.25,"best_label":"good","best_window":"23:10\u201304:25","dark_hours":6.12,"date":"2029-05-05","moon_free_dark_hours":4.47,"moon_illumination":45,"moon_separation":64.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.25,"best_label":"good","best_window":"23:05\u201304:20","dark_hours":6.06,"date":"2029-05-06","moon_free_dark_hours":4.83,"moon_illumination":35,"moon_separation":67.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"05:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.33,"best_label":"good","best_window":"23:00\u201304:20","dark_hours":6.0,"date":"2029-05-07","moon_free_dark_hours":5.18,"moon_illumination":26,"moon_separation":72.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.42,"best_label":"good","best_window":"22:55\u201304:20","dark_hours":5.95,"date":"2029-05-08","moon_free_dark_hours":5.53,"moon_illumination":19,"moon_separation":77.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.42,"best_label":"good","best_window":"22:50\u201304:15","dark_hours":5.89,"date":"2029-05-09","moon_free_dark_hours":5.88,"moon_illumination":12,"moon_separation":82.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.42,"best_label":"good","best_window":"22:50\u201304:15","dark_hours":5.83,"date":"2029-05-10","moon_free_dark_hours":5.82,"moon_illumination":6,"moon_separation":88.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.5,"best_label":"good","best_window":"22:45\u201304:15","dark_hours":5.78,"date":"2029-05-11","moon_free_dark_hours":5.77,"moon_illumination":3,"moon_separation":94.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.5,"best_label":"good","best_window":"22:40\u201304:10","dark_hours":5.72,"date":"2029-05-12","moon_free_dark_hours":5.7,"moon_illumination":0,"moon_separation":100.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.58,"best_label":"good","best_window":"22:35\u201304:10","dark_hours":5.67,"date":"2029-05-13","moon_free_dark_hours":5.65,"moon_illumination":0,"moon_separation":105.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.67,"best_label":"good","best_window":"22:30\u201304:10","dark_hours":5.62,"date":"2029-05-14","moon_free_dark_hours":5.6,"moon_illumination":2,"moon_separation":110.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.5,"best_label":"good","best_window":"22:35\u201304:05","dark_hours":5.56,"date":"2029-05-15","moon_free_dark_hours":5.52,"moon_illumination":5,"moon_separation":114.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.5,"best_label":"good","best_window":"22:35\u201304:05","dark_hours":5.51,"date":"2029-05-16","moon_free_dark_hours":4.67,"moon_illumination":11,"moon_separation":117.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.5,"best_label":"good","best_window":"22:35\u201304:05","dark_hours":5.46,"date":"2029-05-17","moon_free_dark_hours":3.95,"moon_illumination":18,"moon_separation":119.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.33,"best_label":"good","best_window":"22:40\u201304:00","dark_hours":5.41,"date":"2029-05-18","moon_free_dark_hours":3.3,"moon_illumination":26,"moon_separation":119.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":5.33,"best_label":"good","best_window":"22:40\u201304:00","dark_hours":5.36,"date":"2029-05-19","moon_free_dark_hours":2.73,"moon_illumination":36,"moon_separation":117.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.33,"best_label":"good","best_window":"22:40\u201304:00","dark_hours":5.31,"date":"2029-05-20","moon_free_dark_hours":2.22,"moon_illumination":47,"moon_separation":114.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":5.33,"best_label":"good","best_window":"22:40\u201304:00","dark_hours":5.26,"date":"2029-05-21","moon_free_dark_hours":1.73,"moon_illumination":58,"moon_separation":109.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"04:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":5.17,"best_label":"good","best_window":"22:45\u201303:55","dark_hours":5.21,"date":"2029-05-22","moon_free_dark_hours":1.25,"moon_illumination":70,"moon_separation":104.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.17,"best_label":"good","best_window":"22:45\u201303:55","dark_hours":5.16,"date":"2029-05-23","moon_free_dark_hours":0.75,"moon_illumination":80,"moon_separation":97.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.17,"best_label":"good","best_window":"22:45\u201303:55","dark_hours":5.11,"date":"2029-05-24","moon_free_dark_hours":0.2,"moon_illumination":88,"moon_separation":90.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"03:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":4.75,"best_label":"good","best_window":"23:10\u201303:55","dark_hours":5.07,"date":"2029-05-25","moon_free_dark_hours":0.0,"moon_illumination":95,"moon_separation":82.7,"score":null,"score_astronomy":78,"score_weather":null,"transit_alt":87.1,"transit_local":"03:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.17,"best_label":"good","best_window":"23:40\u201303:50","dark_hours":5.03,"date":"2029-05-26","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":75.8,"score":null,"score_astronomy":71,"score_weather":null,"transit_alt":87.1,"transit_local":"03:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.92,"best_label":"good","best_window":"23:55\u201303:50","dark_hours":4.98,"date":"2029-05-27","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":69.7,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.1,"transit_local":"03:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":4.5,"best_label":"good","best_window":"23:20\u201303:50","dark_hours":4.94,"date":"2029-05-28","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":64.9,"score":null,"score_astronomy":59,"score_weather":null,"transit_alt":87.1,"transit_local":"03:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.92,"best_label":"good","best_window":"22:55\u201303:50","dark_hours":4.9,"date":"2029-05-29","moon_free_dark_hours":0.02,"moon_illumination":94,"moon_separation":61.8,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.1,"transit_local":"03:30","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":"2029-04-30","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}}