{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":8.92,"best_label":"good","best_window":"18:40\u201303:35","dark_hours":10.96,"date":"2047-11-15","moon_free_dark_hours":10.93,"moon_illumination":4,"moon_separation":151.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.6,"transit_local":"21:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":8.83,"best_label":"good","best_window":"18:40\u201303:30","dark_hours":10.98,"date":"2047-11-16","moon_free_dark_hours":10.97,"moon_illumination":1,"moon_separation":146.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.6,"transit_local":"21:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":8.83,"best_label":"good","best_window":"18:40\u201303:30","dark_hours":11.01,"date":"2047-11-17","moon_free_dark_hours":11.0,"moon_illumination":0,"moon_separation":136.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.8,"transit_local":"21:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":8.75,"best_label":"good","best_window":"18:40\u201303:25","dark_hours":11.04,"date":"2047-11-18","moon_free_dark_hours":11.02,"moon_illumination":3,"moon_separation":125.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.8,"transit_local":"21:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":8.75,"best_label":"good","best_window":"18:35\u201303:20","dark_hours":11.07,"date":"2047-11-19","moon_free_dark_hours":11.05,"moon_illumination":8,"moon_separation":112.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.7,"transit_local":"21:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":8.67,"best_label":"good","best_window":"18:35\u201303:15","dark_hours":11.09,"date":"2047-11-20","moon_free_dark_hours":9.88,"moon_illumination":16,"moon_separation":99.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.5,"transit_local":"21:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":8.67,"best_label":"good","best_window":"18:35\u201303:15","dark_hours":11.12,"date":"2047-11-21","moon_free_dark_hours":8.68,"moon_illumination":25,"moon_separation":87.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.7,"transit_local":"21:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":8.58,"best_label":"good","best_window":"18:35\u201303:10","dark_hours":11.14,"date":"2047-11-22","moon_free_dark_hours":7.5,"moon_illumination":35,"moon_separation":75.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.8,"transit_local":"21:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":8.5,"best_label":"good","best_window":"18:35\u201303:05","dark_hours":11.17,"date":"2047-11-23","moon_free_dark_hours":6.4,"moon_illumination":46,"moon_separation":64.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.8,"transit_local":"20:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":8.42,"best_label":"good","best_window":"18:35\u201303:00","dark_hours":11.19,"date":"2047-11-24","moon_free_dark_hours":5.33,"moon_illumination":56,"moon_separation":53.6,"score":null,"score_astronomy":94,"score_weather":null,"transit_alt":89.6,"transit_local":"20:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":8.33,"best_label":"good","best_window":"18:35\u201302:55","dark_hours":11.21,"date":"2047-11-25","moon_free_dark_hours":4.3,"moon_illumination":65,"moon_separation":44.0,"score":null,"score_astronomy":86,"score_weather":null,"transit_alt":89.6,"transit_local":"20:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.42,"best_label":"good","best_window":"02:30\u201302:55","dark_hours":11.23,"date":"2047-11-26","moon_free_dark_hours":3.32,"moon_illumination":74,"moon_separation":35.9,"score":null,"score_astronomy":73,"score_weather":null,"transit_alt":89.7,"transit_local":"20:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":8.58,"best_label":"marginal","best_window":"18:35\u201303:10","dark_hours":11.25,"date":"2047-11-27","moon_free_dark_hours":2.32,"moon_illumination":82,"moon_separation":30.3,"score":null,"score_astronomy":46,"score_weather":null,"transit_alt":89.8,"transit_local":"20:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":8.25,"best_label":"marginal","best_window":"18:35\u201302:50","dark_hours":11.27,"date":"2047-11-28","moon_free_dark_hours":1.33,"moon_illumination":89,"moon_separation":28.5,"score":null,"score_astronomy":32,"score_weather":null,"transit_alt":89.7,"transit_local":"20:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":2.25,"best_label":"marginal","best_window":"18:35\u201320:50","dark_hours":11.29,"date":"2047-11-29","moon_free_dark_hours":0.35,"moon_illumination":94,"moon_separation":31.0,"score":null,"score_astronomy":27,"score_weather":null,"transit_alt":89.6,"transit_local":"20:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":3.25,"best_label":"marginal","best_window":"18:35\u201321:50","dark_hours":11.31,"date":"2047-11-30","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":37.0,"score":null,"score_astronomy":30,"score_weather":null,"transit_alt":89.6,"transit_local":"20:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":5.83,"best_label":"marginal","best_window":"18:35\u201300:25","dark_hours":11.33,"date":"2047-12-01","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":45.0,"score":null,"score_astronomy":39,"score_weather":null,"transit_alt":89.8,"transit_local":"20:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.5,"best_label":"marginal","best_window":"18:35\u201302:05","dark_hours":11.35,"date":"2047-12-02","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":54.3,"score":null,"score_astronomy":55,"score_weather":null,"transit_alt":89.8,"transit_local":"20:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":1.75,"best_label":"good","best_window":"18:35\u201320:20","dark_hours":11.36,"date":"2047-12-03","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":64.3,"score":null,"score_astronomy":68,"score_weather":null,"transit_alt":89.7,"transit_local":"20:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.5,"best_label":"good","best_window":"18:35\u201323:05","dark_hours":11.38,"date":"2047-12-04","moon_free_dark_hours":0.0,"moon_illumination":95,"moon_separation":74.7,"score":null,"score_astronomy":77,"score_weather":null,"transit_alt":89.5,"transit_local":"20:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.92,"best_label":"good","best_window":"18:35\u201300:30","dark_hours":11.39,"date":"2047-12-05","moon_free_dark_hours":1.0,"moon_illumination":90,"moon_separation":85.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.7,"transit_local":"20:10","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.17,"best_label":"good","best_window":"18:35\u201301:45","dark_hours":11.41,"date":"2047-12-06","moon_free_dark_hours":2.05,"moon_illumination":83,"moon_separation":96.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.8,"transit_local":"20:05","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.25,"best_label":"good","best_window":"18:35\u201301:50","dark_hours":11.42,"date":"2047-12-07","moon_free_dark_hours":3.12,"moon_illumination":74,"moon_separation":107.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.8,"transit_local":"20:00","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.33,"best_label":"good","best_window":"18:35\u201301:55","dark_hours":11.43,"date":"2047-12-08","moon_free_dark_hours":4.22,"moon_illumination":65,"moon_separation":118.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.6,"transit_local":"19:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.33,"best_label":"good","best_window":"18:35\u201301:55","dark_hours":11.44,"date":"2047-12-09","moon_free_dark_hours":5.32,"moon_illumination":55,"moon_separation":129.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.6,"transit_local":"19:55","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.33,"best_label":"good","best_window":"18:35\u201301:55","dark_hours":11.45,"date":"2047-12-10","moon_free_dark_hours":6.45,"moon_illumination":44,"moon_separation":139.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.7,"transit_local":"19:50","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.33,"best_label":"good","best_window":"18:35\u201301:55","dark_hours":11.46,"date":"2047-12-11","moon_free_dark_hours":7.65,"moon_illumination":33,"moon_separation":147.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.8,"transit_local":"19:45","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.25,"best_label":"good","best_window":"18:35\u201301:50","dark_hours":11.47,"date":"2047-12-12","moon_free_dark_hours":8.88,"moon_illumination":22,"moon_separation":151.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.7,"transit_local":"19:40","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.17,"best_label":"good","best_window":"18:35\u201301:45","dark_hours":11.48,"date":"2047-12-13","moon_free_dark_hours":10.15,"moon_illumination":14,"moon_separation":149.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.6,"transit_local":"19:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.08,"best_label":"good","best_window":"18:35\u201301:40","dark_hours":11.48,"date":"2047-12-14","moon_free_dark_hours":11.43,"moon_illumination":6,"moon_separation":141.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":89.6,"transit_local":"19:35","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":"2047-11-15","target":{"common_name":"Andromeda Galaxy","dec":41.26875,"morphology":"SA(s)b","name":"M 31","ra":10.68470833,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M31","source":"sesame","type":"AGN","type_text":"galaxy with an active nucleus","vmag":3.44}}