{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":3.58,"best_label":"marginal","best_window":"20:50\u201300:25","dark_hours":11.5,"date":"2032-12-18","moon_free_dark_hours":0.32,"moon_illumination":95,"moon_separation":36.3,"score":null,"score_astronomy":21,"score_weather":null,"transit_alt":42.9,"transit_local":"00:05","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.58,"best_label":"marginal","best_window":"20:25\u201303:00","dark_hours":11.51,"date":"2032-12-19","moon_free_dark_hours":1.27,"moon_illumination":90,"moon_separation":45.9,"score":null,"score_astronomy":36,"score_weather":null,"transit_alt":42.9,"transit_local":"00:00","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.08,"best_label":"good","best_window":"20:45\u201320:50","dark_hours":11.51,"date":"2032-12-20","moon_free_dark_hours":2.25,"moon_illumination":84,"moon_separation":56.2,"score":null,"score_astronomy":58,"score_weather":null,"transit_alt":42.9,"transit_local":"00:00","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":4.17,"best_label":"good","best_window":"20:40\u201300:50","dark_hours":11.51,"date":"2032-12-21","moon_free_dark_hours":3.18,"moon_illumination":76,"moon_separation":66.8,"score":null,"score_astronomy":83,"score_weather":null,"transit_alt":42.9,"transit_local":"23:55","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":5.92,"best_label":"good","best_window":"20:35\u201302:30","dark_hours":11.51,"date":"2032-12-22","moon_free_dark_hours":4.13,"moon_illumination":68,"moon_separation":77.5,"score":null,"score_astronomy":87,"score_weather":null,"transit_alt":42.9,"transit_local":"23:50","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.25,"best_label":"good","best_window":"20:30\u201302:45","dark_hours":11.5,"date":"2032-12-23","moon_free_dark_hours":5.07,"moon_illumination":59,"moon_separation":88.2,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:45","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.33,"best_label":"good","best_window":"20:30\u201302:50","dark_hours":11.5,"date":"2032-12-24","moon_free_dark_hours":6.0,"moon_illumination":49,"moon_separation":99.0,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.42,"best_label":"good","best_window":"20:25\u201302:50","dark_hours":11.5,"date":"2032-12-25","moon_free_dark_hours":6.97,"moon_illumination":40,"moon_separation":109.8,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:40","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.5,"best_label":"good","best_window":"20:20\u201302:50","dark_hours":11.49,"date":"2032-12-26","moon_free_dark_hours":7.92,"moon_illumination":31,"moon_separation":120.6,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:35","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.58,"best_label":"good","best_window":"20:15\u201302:50","dark_hours":11.49,"date":"2032-12-27","moon_free_dark_hours":8.92,"moon_illumination":22,"moon_separation":131.3,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:30","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":6.58,"best_label":"good","best_window":"20:10\u201302:45","dark_hours":11.48,"date":"2032-12-28","moon_free_dark_hours":9.92,"moon_illumination":14,"moon_separation":141.5,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:25","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.5,"best_label":"good","best_window":"20:10\u201302:40","dark_hours":11.47,"date":"2032-12-29","moon_free_dark_hours":10.9,"moon_illumination":8,"moon_separation":150.2,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.58,"best_label":"good","best_window":"20:05\u201302:40","dark_hours":11.47,"date":"2032-12-30","moon_free_dark_hours":11.45,"moon_illumination":3,"moon_separation":155.2,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.58,"best_label":"good","best_window":"20:00\u201302:35","dark_hours":11.46,"date":"2032-12-31","moon_free_dark_hours":11.45,"moon_illumination":0,"moon_separation":153.7,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.58,"best_label":"good","best_window":"19:55\u201302:30","dark_hours":11.45,"date":"2033-01-01","moon_free_dark_hours":11.43,"moon_illumination":0,"moon_separation":146.1,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.5,"best_label":"good","best_window":"19:55\u201302:25","dark_hours":11.44,"date":"2033-01-02","moon_free_dark_hours":11.42,"moon_illumination":3,"moon_separation":135.3,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.5,"best_label":"good","best_window":"19:50\u201302:20","dark_hours":11.42,"date":"2033-01-03","moon_free_dark_hours":10.45,"moon_illumination":9,"moon_separation":123.0,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":6.58,"best_label":"good","best_window":"19:45\u201302:20","dark_hours":11.41,"date":"2033-01-04","moon_free_dark_hours":9.25,"moon_illumination":16,"moon_separation":110.1,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":6.5,"best_label":"good","best_window":"19:45\u201302:15","dark_hours":11.4,"date":"2033-01-05","moon_free_dark_hours":8.07,"moon_illumination":26,"moon_separation":97.0,"score":null,"score_astronomy":89,"score_weather":null,"transit_alt":42.9,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":6.33,"best_label":"good","best_window":"19:50\u201302:10","dark_hours":11.38,"date":"2033-01-06","moon_free_dark_hours":6.9,"moon_illumination":36,"moon_separation":84.0,"score":null,"score_astronomy":88,"score_weather":null,"transit_alt":42.9,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.08,"best_label":"good","best_window":"20:00\u201302:05","dark_hours":11.37,"date":"2033-01-07","moon_free_dark_hours":5.75,"moon_illumination":48,"moon_separation":71.2,"score":null,"score_astronomy":85,"score_weather":null,"transit_alt":42.9,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.83,"best_label":"good","best_window":"21:10\u201302:00","dark_hours":11.35,"date":"2033-01-08","moon_free_dark_hours":4.62,"moon_illumination":59,"moon_separation":58.8,"score":null,"score_astronomy":75,"score_weather":null,"transit_alt":42.9,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.25,"best_label":"marginal","best_window":"19:15\u201302:30","dark_hours":11.34,"date":"2033-01-09","moon_free_dark_hours":3.52,"moon_illumination":69,"moon_separation":47.1,"score":null,"score_astronomy":53,"score_weather":null,"transit_alt":42.9,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":6.67,"best_label":"marginal","best_window":"19:35\u201302:15","dark_hours":11.32,"date":"2033-01-10","moon_free_dark_hours":2.47,"moon_illumination":79,"moon_separation":36.6,"score":null,"score_astronomy":34,"score_weather":null,"transit_alt":42.9,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":3.67,"best_label":"marginal","best_window":"22:05\u201301:45","dark_hours":11.3,"date":"2033-01-11","moon_free_dark_hours":1.47,"moon_illumination":87,"moon_separation":28.4,"score":null,"score_astronomy":20,"score_weather":null,"transit_alt":42.9,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.28,"date":"2033-01-12","moon_free_dark_hours":0.53,"moon_illumination":93,"moon_separation":24.5,"score":null,"score_astronomy":14,"score_weather":null,"transit_alt":42.9,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":11.26,"date":"2033-01-13","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":26.7,"score":null,"score_astronomy":12,"score_weather":null,"transit_alt":42.9,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":1.5,"best_label":"marginal","best_window":"19:20\u201320:50","dark_hours":11.24,"date":"2033-01-14","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":33.6,"score":null,"score_astronomy":16,"score_weather":null,"transit_alt":42.9,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":4.58,"best_label":"marginal","best_window":"18:55\u201323:30","dark_hours":11.22,"date":"2033-01-15","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":42.7,"score":null,"score_astronomy":25,"score_weather":null,"transit_alt":42.9,"transit_local":"22:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":6.25,"best_label":"marginal","best_window":"18:55\u201301:10","dark_hours":11.2,"date":"2033-01-16","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":52.9,"score":null,"score_astronomy":38,"score_weather":null,"transit_alt":42.9,"transit_local":"22:10","verdict":"unknown","weather_source":"none","weekday":"Sun"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2032-12-18","target":{"common_name":"Great Orion Nebula","dec":-5.3876,"name":"M 42","ra":83.8201,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M42","source":"sesame","type":"HII","type_text":"HII region \u2014 a star-forming nebula"}}
