{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.88,"date":"2040-04-04","moon_free_dark_hours":6.35,"moon_illumination":46,"moon_separation":103.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"14:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.83,"date":"2040-04-05","moon_free_dark_hours":7.12,"moon_illumination":35,"moon_separation":90.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"14:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.77,"date":"2040-04-06","moon_free_dark_hours":7.75,"moon_illumination":24,"moon_separation":77.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.72,"date":"2040-04-07","moon_free_dark_hours":7.7,"moon_illumination":16,"moon_separation":64.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.66,"date":"2040-04-08","moon_free_dark_hours":7.65,"moon_illumination":8,"moon_separation":52.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.6,"date":"2040-04-09","moon_free_dark_hours":7.6,"moon_illumination":3,"moon_separation":40.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.55,"date":"2040-04-10","moon_free_dark_hours":7.53,"moon_illumination":1,"moon_separation":30.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.49,"date":"2040-04-11","moon_free_dark_hours":7.48,"moon_illumination":0,"moon_separation":23.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.43,"date":"2040-04-12","moon_free_dark_hours":7.42,"moon_illumination":2,"moon_separation":22.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.37,"date":"2040-04-13","moon_free_dark_hours":7.02,"moon_illumination":6,"moon_separation":27.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.32,"date":"2040-04-14","moon_free_dark_hours":5.9,"moon_illumination":11,"moon_separation":36.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:25","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.26,"date":"2040-04-15","moon_free_dark_hours":4.82,"moon_illumination":18,"moon_separation":46.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.2,"date":"2040-04-16","moon_free_dark_hours":3.82,"moon_illumination":26,"moon_separation":57.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.14,"date":"2040-04-17","moon_free_dark_hours":2.9,"moon_illumination":35,"moon_separation":67.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.08,"date":"2040-04-18","moon_free_dark_hours":2.08,"moon_illumination":44,"moon_separation":78.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:10","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":7.03,"date":"2040-04-19","moon_free_dark_hours":1.4,"moon_illumination":54,"moon_separation":89.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.97,"date":"2040-04-20","moon_free_dark_hours":0.8,"moon_illumination":63,"moon_separation":100.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"13:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.91,"date":"2040-04-21","moon_free_dark_hours":0.27,"moon_illumination":72,"moon_separation":112.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.85,"date":"2040-04-22","moon_free_dark_hours":0.0,"moon_illumination":81,"moon_separation":123.3,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:55","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.79,"date":"2040-04-23","moon_free_dark_hours":0.0,"moon_illumination":88,"moon_separation":134.5,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:50","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.74,"date":"2040-04-24","moon_free_dark_hours":0.0,"moon_illumination":94,"moon_separation":145.2,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.68,"date":"2040-04-25","moon_free_dark_hours":0.0,"moon_illumination":98,"moon_separation":154.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.62,"date":"2040-04-26","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":158.0,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.56,"date":"2040-04-27","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":154.1,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:35","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.5,"date":"2040-04-28","moon_free_dark_hours":0.15,"moon_illumination":96,"moon_separation":144.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:30","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.44,"date":"2040-04-29","moon_free_dark_hours":1.4,"moon_illumination":90,"moon_separation":132.7,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:25","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.39,"date":"2040-04-30","moon_free_dark_hours":2.58,"moon_illumination":81,"moon_separation":119.8,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:20","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.33,"date":"2040-05-01","moon_free_dark_hours":3.62,"moon_illumination":71,"moon_separation":106.6,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:15","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.27,"date":"2040-05-02","moon_free_dark_hours":4.43,"moon_illumination":60,"moon_separation":93.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:15","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":6.21,"date":"2040-05-03","moon_free_dark_hours":5.1,"moon_illumination":49,"moon_separation":80.4,"score":null,"score_astronomy":0,"score_weather":null,"transit_alt":79.2,"transit_local":"12:10","verdict":"unknown","weather_source":"none","weekday":"Thu"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2040-04-04","target":{"common_name":"Triangulum Pinwheel","dec":30.66017511,"morphology":"SA(s)cd","name":"M 33","ra":23.46206906,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M33","source":"sesame","type":"GiG","type_text":"galaxy in a group","vmag":5.72}}