{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":2.5,"best_label":"good","best_window":"02:50\u201305:20","dark_hours":9.44,"date":"2045-03-05","moon_free_dark_hours":1.42,"moon_illumination":91,"moon_separation":91.0,"score":null,"score_astronomy":48,"score_weather":null,"transit_alt":87.1,"transit_local":"08:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":2.67,"best_label":"good","best_window":"02:35\u201305:15","dark_hours":9.4,"date":"2045-03-06","moon_free_dark_hours":2.63,"moon_illumination":84,"moon_separation":85.3,"score":null,"score_astronomy":48,"score_weather":null,"transit_alt":87.1,"transit_local":"08:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.83,"best_label":"good","best_window":"02:25\u201305:15","dark_hours":9.35,"date":"2045-03-07","moon_free_dark_hours":3.8,"moon_illumination":75,"moon_separation":80.0,"score":null,"score_astronomy":50,"score_weather":null,"transit_alt":87.1,"transit_local":"07:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":3.0,"best_label":"good","best_window":"02:15\u201305:15","dark_hours":9.3,"date":"2045-03-08","moon_free_dark_hours":4.93,"moon_illumination":66,"moon_separation":75.3,"score":null,"score_astronomy":54,"score_weather":null,"transit_alt":87.1,"transit_local":"07:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.0,"best_label":"good","best_window":"02:10\u201305:10","dark_hours":9.25,"date":"2045-03-09","moon_free_dark_hours":5.98,"moon_illumination":56,"moon_separation":71.4,"score":null,"score_astronomy":60,"score_weather":null,"transit_alt":87.1,"transit_local":"07:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":3.33,"best_label":"good","best_window":"01:50\u201305:10","dark_hours":9.2,"date":"2045-03-10","moon_free_dark_hours":6.9,"moon_illumination":46,"moon_separation":68.3,"score":null,"score_astronomy":67,"score_weather":null,"transit_alt":87.1,"transit_local":"07:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.42,"best_label":"good","best_window":"01:45\u201305:10","dark_hours":9.16,"date":"2045-03-11","moon_free_dark_hours":7.68,"moon_illumination":37,"moon_separation":66.3,"score":null,"score_astronomy":76,"score_weather":null,"transit_alt":87.1,"transit_local":"07:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.42,"best_label":"good","best_window":"01:40\u201305:05","dark_hours":9.11,"date":"2045-03-12","moon_free_dark_hours":8.28,"moon_illumination":28,"moon_separation":65.4,"score":null,"score_astronomy":82,"score_weather":null,"transit_alt":87.1,"transit_local":"07:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.5,"best_label":"good","best_window":"01:35\u201305:05","dark_hours":9.06,"date":"2045-03-13","moon_free_dark_hours":8.78,"moon_illumination":20,"moon_separation":65.5,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":87.1,"transit_local":"07:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.5,"best_label":"good","best_window":"01:30\u201305:00","dark_hours":9.01,"date":"2045-03-14","moon_free_dark_hours":8.98,"moon_illumination":13,"moon_separation":66.8,"score":null,"score_astronomy":91,"score_weather":null,"transit_alt":87.1,"transit_local":"07:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":3.5,"best_label":"good","best_window":"01:30\u201305:00","dark_hours":8.96,"date":"2045-03-15","moon_free_dark_hours":8.95,"moon_illumination":7,"moon_separation":69.1,"score":null,"score_astronomy":93,"score_weather":null,"transit_alt":87.1,"transit_local":"07:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.58,"best_label":"good","best_window":"01:25\u201305:00","dark_hours":8.91,"date":"2045-03-16","moon_free_dark_hours":8.9,"moon_illumination":3,"moon_separation":72.4,"score":null,"score_astronomy":93,"score_weather":null,"transit_alt":87.1,"transit_local":"07:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":3.58,"best_label":"good","best_window":"01:20\u201304:55","dark_hours":8.86,"date":"2045-03-17","moon_free_dark_hours":8.83,"moon_illumination":1,"moon_separation":76.4,"score":null,"score_astronomy":94,"score_weather":null,"transit_alt":87.1,"transit_local":"07:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.67,"best_label":"good","best_window":"01:15\u201304:55","dark_hours":8.8,"date":"2045-03-18","moon_free_dark_hours":8.78,"moon_illumination":0,"moon_separation":81.1,"score":null,"score_astronomy":96,"score_weather":null,"transit_alt":87.1,"transit_local":"07:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.67,"best_label":"good","best_window":"01:15\u201304:55","dark_hours":8.75,"date":"2045-03-19","moon_free_dark_hours":8.73,"moon_illumination":2,"moon_separation":86.2,"score":null,"score_astronomy":97,"score_weather":null,"transit_alt":87.1,"transit_local":"07:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.67,"best_label":"good","best_window":"01:10\u201304:50","dark_hours":8.7,"date":"2045-03-20","moon_free_dark_hours":8.23,"moon_illumination":5,"moon_separation":91.6,"score":null,"score_astronomy":97,"score_weather":null,"transit_alt":87.1,"transit_local":"07:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.75,"best_label":"good","best_window":"01:05\u201304:50","dark_hours":8.65,"date":"2045-03-21","moon_free_dark_hours":7.05,"moon_illumination":11,"moon_separation":97.0,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":87.1,"transit_local":"07:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":3.83,"best_label":"good","best_window":"01:00\u201304:50","dark_hours":8.6,"date":"2045-03-22","moon_free_dark_hours":5.82,"moon_illumination":18,"moon_separation":102.1,"score":null,"score_astronomy":99,"score_weather":null,"transit_alt":87.1,"transit_local":"06:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.83,"best_label":"good","best_window":"00:55\u201304:45","dark_hours":8.54,"date":"2045-03-23","moon_free_dark_hours":4.6,"moon_illumination":27,"moon_separation":106.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"06:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":3.83,"best_label":"good","best_window":"00:55\u201304:45","dark_hours":8.49,"date":"2045-03-24","moon_free_dark_hours":3.43,"moon_illumination":38,"moon_separation":110.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"06:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.75,"best_label":"good","best_window":"00:55\u201305:40","dark_hours":8.44,"date":"2045-03-25","moon_free_dark_hours":2.42,"moon_illumination":49,"moon_separation":113.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.1,"transit_local":"07:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":3.75,"best_label":"good","best_window":"01:55\u201305:40","dark_hours":8.39,"date":"2045-03-26","moon_free_dark_hours":1.55,"moon_illumination":60,"moon_separation":114.7,"score":null,"score_astronomy":98,"score_weather":null,"transit_alt":87.1,"transit_local":"07:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.83,"best_label":"good","best_window":"01:50\u201305:40","dark_hours":8.33,"date":"2045-03-27","moon_free_dark_hours":0.87,"moon_illumination":71,"moon_separation":114.4,"score":null,"score_astronomy":97,"score_weather":null,"transit_alt":87.1,"transit_local":"07:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.75,"best_label":"good","best_window":"01:50\u201305:35","dark_hours":8.28,"date":"2045-03-28","moon_free_dark_hours":0.28,"moon_illumination":81,"moon_separation":112.5,"score":null,"score_astronomy":94,"score_weather":null,"transit_alt":87.1,"transit_local":"07:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":3.67,"best_label":"good","best_window":"01:55\u201305:35","dark_hours":8.22,"date":"2045-03-29","moon_free_dark_hours":0.0,"moon_illumination":89,"moon_separation":109.2,"score":null,"score_astronomy":81,"score_weather":null,"transit_alt":87.1,"transit_local":"07:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":3.67,"best_label":"good","best_window":"01:55\u201305:35","dark_hours":8.17,"date":"2045-03-30","moon_free_dark_hours":0.0,"moon_illumination":95,"moon_separation":104.6,"score":null,"score_astronomy":74,"score_weather":null,"transit_alt":87.1,"transit_local":"07:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":3.5,"best_label":"good","best_window":"02:00\u201305:30","dark_hours":8.12,"date":"2045-03-31","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":99.3,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":87.1,"transit_local":"07:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.17,"best_label":"good","best_window":"02:20\u201305:30","dark_hours":8.06,"date":"2045-04-01","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":93.5,"score":null,"score_astronomy":63,"score_weather":null,"transit_alt":87.1,"transit_local":"07:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":2.92,"best_label":"good","best_window":"02:30\u201305:25","dark_hours":8.01,"date":"2045-04-02","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":87.6,"score":null,"score_astronomy":59,"score_weather":null,"transit_alt":87.1,"transit_local":"07:10","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":3.0,"best_label":"good","best_window":"02:25\u201305:25","dark_hours":7.95,"date":"2045-04-03","moon_free_dark_hours":0.83,"moon_illumination":94,"moon_separation":82.0,"score":null,"score_astronomy":57,"score_weather":null,"transit_alt":87.1,"transit_local":"07:10","verdict":"unknown","weather_source":"none","weekday":"Mon"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2045-03-05","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}}