{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":1.25,"best_label":"good","best_window":"18:35\u201319:50","dark_hours":11.42,"date":"2037-12-07","moon_free_dark_hours":11.4,"moon_illumination":1,"moon_separation":61.2,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":87.1,"transit_local":"13:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.25,"best_label":"good","best_window":"18:35\u201319:50","dark_hours":11.44,"date":"2037-12-08","moon_free_dark_hours":11.42,"moon_illumination":5,"moon_separation":61.1,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":87.1,"transit_local":"13:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.17,"best_label":"good","best_window":"18:35\u201319:45","dark_hours":11.45,"date":"2037-12-09","moon_free_dark_hours":10.73,"moon_illumination":10,"moon_separation":62.6,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":87.1,"transit_local":"13:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":1.0,"best_label":"good","best_window":"18:35\u201319:35","dark_hours":11.46,"date":"2037-12-10","moon_free_dark_hours":9.72,"moon_illumination":17,"moon_separation":65.7,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":87.1,"transit_local":"13:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.92,"best_label":"good","best_window":"18:35\u201319:30","dark_hours":11.47,"date":"2037-12-11","moon_free_dark_hours":8.72,"moon_illumination":25,"moon_separation":69.8,"score":null,"score_astronomy":24,"score_weather":null,"transit_alt":87.1,"transit_local":"13:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.75,"best_label":"good","best_window":"18:35\u201319:20","dark_hours":11.47,"date":"2037-12-12","moon_free_dark_hours":7.72,"moon_illumination":34,"moon_separation":74.6,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":87.1,"transit_local":"13:35","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.58,"best_label":"good","best_window":"18:35\u201319:10","dark_hours":11.48,"date":"2037-12-13","moon_free_dark_hours":6.73,"moon_illumination":44,"moon_separation":80.0,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":87.1,"transit_local":"13:30","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.5,"best_label":"good","best_window":"18:35\u201319:05","dark_hours":11.49,"date":"2037-12-14","moon_free_dark_hours":5.75,"moon_illumination":53,"moon_separation":85.6,"score":null,"score_astronomy":17,"score_weather":null,"transit_alt":87.1,"transit_local":"13:25","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.42,"best_label":"good","best_window":"18:35\u201319:00","dark_hours":11.49,"date":"2037-12-15","moon_free_dark_hours":4.8,"moon_illumination":62,"moon_separation":91.3,"score":null,"score_astronomy":15,"score_weather":null,"transit_alt":87.1,"transit_local":"13:20","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.33,"best_label":"good","best_window":"18:35\u201318:55","dark_hours":11.5,"date":"2037-12-16","moon_free_dark_hours":3.83,"moon_illumination":71,"moon_separation":97.0,"score":null,"score_astronomy":15,"score_weather":null,"transit_alt":87.1,"transit_local":"13:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.25,"best_label":"good","best_window":"18:35\u201318:50","dark_hours":11.5,"date":"2037-12-17","moon_free_dark_hours":2.87,"moon_illumination":79,"moon_separation":102.6,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":87.1,"transit_local":"13:15","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.25,"best_label":"good","best_window":"18:35\u201318:50","dark_hours":11.5,"date":"2037-12-18","moon_free_dark_hours":1.88,"moon_illumination":87,"moon_separation":107.7,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":87.1,"transit_local":"13:10","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.17,"best_label":"good","best_window":"18:35\u201318:45","dark_hours":11.51,"date":"2037-12-19","moon_free_dark_hours":0.85,"moon_illumination":93,"moon_separation":112.2,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":87.1,"transit_local":"13:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.17,"best_label":"good","best_window":"18:35\u201318:45","dark_hours":11.51,"date":"2037-12-20","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":115.9,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":87.1,"transit_local":"13:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.17,"best_label":"good","best_window":"18:35\u201318:45","dark_hours":11.51,"date":"2037-12-21","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":118.3,"score":null,"score_astronomy":12,"score_weather":null,"transit_alt":87.1,"transit_local":"13:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.08,"best_label":"good","best_window":"18:35\u201318:40","dark_hours":11.51,"date":"2037-12-22","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":119.1,"score":null,"score_astronomy":12,"score_weather":null,"transit_alt":87.1,"transit_local":"12:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":1.25,"best_label":"marginal","best_window":"18:05\u201319:20","dark_hours":11.5,"date":"2037-12-23","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":118.2,"score":null,"score_astronomy":10,"score_weather":null,"transit_alt":87.1,"transit_local":"12:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.08,"best_label":"good","best_window":"18:40\u201318:45","dark_hours":11.5,"date":"2037-12-24","moon_free_dark_hours":0.43,"moon_illumination":94,"moon_separation":115.7,"score":null,"score_astronomy":11,"score_weather":null,"transit_alt":87.1,"transit_local":"12:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.17,"best_label":"marginal","best_window":"18:05\u201319:15","dark_hours":11.5,"date":"2037-12-25","moon_free_dark_hours":1.52,"moon_illumination":87,"moon_separation":111.5,"score":null,"score_astronomy":11,"score_weather":null,"transit_alt":87.1,"transit_local":"12:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.5,"best_label":"marginal","best_window":"18:40\u201319:10","dark_hours":11.49,"date":"2037-12-26","moon_free_dark_hours":2.67,"moon_illumination":78,"moon_separation":106.2,"score":null,"score_astronomy":10,"score_weather":null,"transit_alt":87.1,"transit_local":"12:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.42,"best_label":"marginal","best_window":"18:40\u201319:05","dark_hours":11.49,"date":"2037-12-27","moon_free_dark_hours":3.85,"moon_illumination":68,"moon_separation":100.0,"score":null,"score_astronomy":9,"score_weather":null,"transit_alt":87.1,"transit_local":"12:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.33,"best_label":"marginal","best_window":"18:40\u201319:00","dark_hours":11.48,"date":"2037-12-28","moon_free_dark_hours":5.02,"moon_illumination":57,"moon_separation":93.3,"score":null,"score_astronomy":9,"score_weather":null,"transit_alt":87.1,"transit_local":"12:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.25,"best_label":"marginal","best_window":"18:40\u201318:55","dark_hours":11.48,"date":"2037-12-29","moon_free_dark_hours":6.17,"moon_illumination":46,"moon_separation":86.4,"score":null,"score_astronomy":8,"score_weather":null,"transit_alt":87.1,"transit_local":"12:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.33,"best_label":"marginal","best_window":"05:50\u201306:10","dark_hours":11.47,"date":"2037-12-30","moon_free_dark_hours":7.35,"moon_illumination":35,"moon_separation":79.7,"score":null,"score_astronomy":8,"score_weather":null,"transit_alt":87.1,"transit_local":"12:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.33,"best_label":"marginal","best_window":"05:50\u201306:10","dark_hours":11.46,"date":"2037-12-31","moon_free_dark_hours":8.52,"moon_illumination":24,"moon_separation":73.6,"score":null,"score_astronomy":8,"score_weather":null,"transit_alt":87.1,"transit_local":"12:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.42,"best_label":"marginal","best_window":"05:45\u201306:10","dark_hours":11.45,"date":"2038-01-01","moon_free_dark_hours":9.68,"moon_illumination":15,"moon_separation":68.3,"score":null,"score_astronomy":8,"score_weather":null,"transit_alt":87.1,"transit_local":"12:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.5,"best_label":"marginal","best_window":"05:40\u201306:10","dark_hours":11.44,"date":"2038-01-02","moon_free_dark_hours":10.83,"moon_illumination":8,"moon_separation":64.2,"score":null,"score_astronomy":10,"score_weather":null,"transit_alt":87.1,"transit_local":"12:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.17,"best_label":"marginal","best_window":"05:35\u201306:45","dark_hours":11.43,"date":"2038-01-03","moon_free_dark_hours":11.42,"moon_illumination":3,"moon_separation":61.7,"score":null,"score_astronomy":11,"score_weather":null,"transit_alt":87.1,"transit_local":"12:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.08,"best_label":"good","best_window":"06:05\u201306:10","dark_hours":11.41,"date":"2038-01-04","moon_free_dark_hours":11.4,"moon_illumination":0,"moon_separation":60.9,"score":null,"score_astronomy":11,"score_weather":null,"transit_alt":87.1,"transit_local":"12:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.17,"best_label":"good","best_window":"06:00\u201306:10","dark_hours":11.4,"date":"2038-01-05","moon_free_dark_hours":11.38,"moon_illumination":0,"moon_separation":61.9,"score":null,"score_astronomy":12,"score_weather":null,"transit_alt":87.1,"transit_local":"11:55","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":"2037-12-07","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}}