{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":1.17,"best_label":"good","best_window":"18:35\u201319:45","dark_hours":11.44,"date":"2028-12-08","moon_free_dark_hours":5.42,"moon_illumination":54,"moon_separation":108.6,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":87.1,"transit_local":"13:50","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.17,"best_label":"good","best_window":"18:35\u201319:45","dark_hours":11.45,"date":"2028-12-09","moon_free_dark_hours":6.62,"moon_illumination":42,"moon_separation":102.8,"score":null,"score_astronomy":31,"score_weather":null,"transit_alt":87.1,"transit_local":"13:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":1.08,"best_label":"good","best_window":"18:35\u201319:40","dark_hours":11.46,"date":"2028-12-10","moon_free_dark_hours":7.83,"moon_illumination":31,"moon_separation":96.3,"score":null,"score_astronomy":29,"score_weather":null,"transit_alt":87.1,"transit_local":"13:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.0,"best_label":"good","best_window":"18:35\u201319:35","dark_hours":11.47,"date":"2028-12-11","moon_free_dark_hours":9.07,"moon_illumination":21,"moon_separation":89.5,"score":null,"score_astronomy":28,"score_weather":null,"transit_alt":87.1,"transit_local":"13:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.92,"best_label":"good","best_window":"18:35\u201319:30","dark_hours":11.48,"date":"2028-12-12","moon_free_dark_hours":10.33,"moon_illumination":12,"moon_separation":82.7,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":87.1,"transit_local":"13:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.92,"best_label":"good","best_window":"18:35\u201319:30","dark_hours":11.48,"date":"2028-12-13","moon_free_dark_hours":11.47,"moon_illumination":6,"moon_separation":76.2,"score":null,"score_astronomy":26,"score_weather":null,"transit_alt":87.1,"transit_local":"13:30","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.83,"best_label":"good","best_window":"18:35\u201319:25","dark_hours":11.49,"date":"2028-12-14","moon_free_dark_hours":11.47,"moon_illumination":2,"moon_separation":70.6,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":87.1,"transit_local":"13:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.75,"best_label":"good","best_window":"18:35\u201319:20","dark_hours":11.49,"date":"2028-12-15","moon_free_dark_hours":11.48,"moon_illumination":0,"moon_separation":66.0,"score":null,"score_astronomy":23,"score_weather":null,"transit_alt":87.1,"transit_local":"13:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.67,"best_label":"good","best_window":"18:35\u201319:15","dark_hours":11.5,"date":"2028-12-16","moon_free_dark_hours":11.48,"moon_illumination":1,"moon_separation":62.9,"score":null,"score_astronomy":22,"score_weather":null,"transit_alt":87.1,"transit_local":"13:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.58,"best_label":"good","best_window":"18:35\u201319:10","dark_hours":11.5,"date":"2028-12-17","moon_free_dark_hours":11.48,"moon_illumination":4,"moon_separation":61.3,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":87.1,"transit_local":"13:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.5,"best_label":"good","best_window":"18:35\u201319:05","dark_hours":11.51,"date":"2028-12-18","moon_free_dark_hours":10.75,"moon_illumination":9,"moon_separation":61.4,"score":null,"score_astronomy":19,"score_weather":null,"transit_alt":87.1,"transit_local":"13:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.42,"best_label":"good","best_window":"18:35\u201319:00","dark_hours":11.51,"date":"2028-12-19","moon_free_dark_hours":9.65,"moon_illumination":15,"moon_separation":63.0,"score":null,"score_astronomy":17,"score_weather":null,"transit_alt":87.1,"transit_local":"13:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.25,"best_label":"good","best_window":"18:35\u201318:50","dark_hours":11.51,"date":"2028-12-20","moon_free_dark_hours":8.62,"moon_illumination":23,"moon_separation":65.9,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":87.1,"transit_local":"13:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.08,"best_label":"good","best_window":"18:35\u201318:40","dark_hours":11.51,"date":"2028-12-21","moon_free_dark_hours":7.6,"moon_illumination":32,"moon_separation":69.8,"score":null,"score_astronomy":12,"score_weather":null,"transit_alt":87.1,"transit_local":"12:55","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.33,"best_label":"marginal","best_window":"18:05\u201319:25","dark_hours":11.51,"date":"2028-12-22","moon_free_dark_hours":6.62,"moon_illumination":41,"moon_separation":74.4,"score":null,"score_astronomy":10,"score_weather":null,"transit_alt":87.1,"transit_local":"12:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.67,"best_label":"marginal","best_window":"18:40\u201319:20","dark_hours":11.5,"date":"2028-12-23","moon_free_dark_hours":5.63,"moon_illumination":50,"moon_separation":79.6,"score":null,"score_astronomy":8,"score_weather":null,"transit_alt":87.1,"transit_local":"12:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.58,"best_label":"marginal","best_window":"18:40\u201319:15","dark_hours":11.5,"date":"2028-12-24","moon_free_dark_hours":4.65,"moon_illumination":60,"moon_separation":85.1,"score":null,"score_astronomy":7,"score_weather":null,"transit_alt":87.1,"transit_local":"12:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.5,"best_label":"marginal","best_window":"18:40\u201319:10","dark_hours":11.5,"date":"2028-12-25","moon_free_dark_hours":3.63,"moon_illumination":69,"moon_separation":90.8,"score":null,"score_astronomy":7,"score_weather":null,"transit_alt":87.1,"transit_local":"12:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.5,"best_label":"marginal","best_window":"18:40\u201319:10","dark_hours":11.49,"date":"2028-12-26","moon_free_dark_hours":2.6,"moon_illumination":77,"moon_separation":96.6,"score":null,"score_astronomy":7,"score_weather":null,"transit_alt":87.1,"transit_local":"12:35","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.42,"best_label":"marginal","best_window":"18:40\u201319:05","dark_hours":11.49,"date":"2028-12-27","moon_free_dark_hours":1.57,"moon_illumination":85,"moon_separation":102.3,"score":null,"score_astronomy":7,"score_weather":null,"transit_alt":87.1,"transit_local":"12:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.33,"best_label":"marginal","best_window":"18:40\u201319:00","dark_hours":11.48,"date":"2028-12-28","moon_free_dark_hours":0.53,"moon_illumination":92,"moon_separation":107.6,"score":null,"score_astronomy":7,"score_weather":null,"transit_alt":87.1,"transit_local":"12:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.25,"best_label":"marginal","best_window":"05:55\u201306:10","dark_hours":11.47,"date":"2028-12-29","moon_free_dark_hours":0.0,"moon_illumination":96,"moon_separation":112.3,"score":null,"score_astronomy":6,"score_weather":null,"transit_alt":87.1,"transit_local":"12:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.33,"best_label":"marginal","best_window":"05:50\u201306:10","dark_hours":11.47,"date":"2028-12-30","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":115.9,"score":null,"score_astronomy":7,"score_weather":null,"transit_alt":87.1,"transit_local":"12:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.33,"best_label":"marginal","best_window":"05:50\u201306:10","dark_hours":11.46,"date":"2028-12-31","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":118.2,"score":null,"score_astronomy":7,"score_weather":null,"transit_alt":87.1,"transit_local":"12:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.42,"best_label":"marginal","best_window":"05:45\u201306:10","dark_hours":11.45,"date":"2029-01-01","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":118.8,"score":null,"score_astronomy":7,"score_weather":null,"transit_alt":87.1,"transit_local":"12:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.5,"best_label":"marginal","best_window":"05:40\u201306:10","dark_hours":11.44,"date":"2029-01-02","moon_free_dark_hours":0.6,"moon_illumination":94,"moon_separation":117.5,"score":null,"score_astronomy":8,"score_weather":null,"transit_alt":87.1,"transit_local":"12:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.58,"best_label":"marginal","best_window":"05:35\u201306:10","dark_hours":11.42,"date":"2029-01-03","moon_free_dark_hours":1.82,"moon_illumination":87,"moon_separation":114.4,"score":null,"score_astronomy":8,"score_weather":null,"transit_alt":87.1,"transit_local":"12:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.67,"best_label":"marginal","best_window":"05:30\u201306:10","dark_hours":11.41,"date":"2029-01-04","moon_free_dark_hours":3.03,"moon_illumination":78,"moon_separation":109.9,"score":null,"score_astronomy":9,"score_weather":null,"transit_alt":87.1,"transit_local":"12:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.67,"best_label":"marginal","best_window":"05:30\u201306:10","dark_hours":11.4,"date":"2029-01-05","moon_free_dark_hours":4.23,"moon_illumination":68,"moon_separation":104.2,"score":null,"score_astronomy":9,"score_weather":null,"transit_alt":87.1,"transit_local":"11:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":1.33,"best_label":"marginal","best_window":"05:25\u201306:45","dark_hours":11.38,"date":"2029-01-06","moon_free_dark_hours":5.43,"moon_illumination":57,"moon_separation":97.8,"score":null,"score_astronomy":10,"score_weather":null,"transit_alt":87.1,"transit_local":"11:50","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":"2028-12-08","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}}