Rozhen Observation Calendar

Which nights are best for a target over the coming weeks. The astronomy mark (darkness × altitude × Moon) is computed for every night; the weather and the overall mark exist only where Open-Meteo has a forecast (the next four days) or ERA5 history (past nights) — the rest is honestly blank.

Best nights for Vega: 11-08 (59), 11-19 (58), 11-20 (58), 11-21 (57), 11-22 (56) — by astronomy; check the weather when the night is within four days.

2032-11-08astronomy score per night — click a bar for that night2032-12-07

night of	astronomy	weather	overall	best window	highest	dark h	Moon	Moon sep.
2032-11-08 Mon	59	—	unknown	18:45–21:35 (good, 2.83 h)	87.1° 15:45	10.76	33%	57.1°
2032-11-09 Tue	50	—	unknown	18:45–21:25 (good, 2.67 h)	87.1° 15:40	10.79	44%	59.6°
2032-11-10 Wed	43	—	unknown	18:45–21:10 (good, 2.42 h)	87.1° 15:40	10.83	55%	64.0°
2032-11-11 Thu	38	—	unknown	18:40–20:35 (good, 1.92 h)	87.1° 15:35	10.86	66%	70.0°
2032-11-12 Fri	35	—	unknown	18:40–20:00 (good, 1.33 h)	87.1° 15:30	10.89	77%	77.0°
2032-11-13 Sat	34	—	unknown	18:40–19:55 (good, 1.25 h)	87.1° 15:25	10.92	86%	84.6°
2032-11-14 Sun	37	—	unknown	18:40–20:10 (good, 1.5 h)	87.1° 15:20	10.95	93%	92.5°
2032-11-15 Mon	40	—	unknown	18:40–20:40 (good, 2.0 h)	87.1° 15:20	10.97	98%	100.3°
2032-11-16 Tue	44	—	unknown	18:40–20:50 (good, 2.17 h)	87.1° 15:15	11.0	100%	107.4°
2032-11-17 Wed	48	—	unknown	18:40–20:50 (good, 2.17 h)	87.1° 15:10	11.03	99%	113.7°
2032-11-18 Thu	52	—	unknown	18:35–20:55 (good, 2.33 h)	87.1° 15:05	11.06	97%	118.6°
2032-11-19 Fri	58	—	unknown	18:35–20:50 (good, 2.25 h)	87.1° 15:05	11.08	92%	121.8°
2032-11-20 Sat	58	—	unknown	18:35–20:50 (good, 2.25 h)	87.1° 15:00	11.11	85%	123.3°
2032-11-21 Sun	57	—	unknown	18:35–20:55 (good, 2.33 h)	87.1° 14:55	11.13	78%	122.8°
2032-11-22 Mon	56	—	unknown	18:35–20:50 (good, 2.25 h)	87.1° 14:50	11.16	69%	120.7°
2032-11-23 Tue	55	—	unknown	18:35–20:45 (good, 2.17 h)	87.1° 14:45	11.18	60%	117.3°
2032-11-24 Wed	54	—	unknown	18:35–20:40 (good, 2.08 h)	87.1° 14:45	11.2	50%	112.7°
2032-11-25 Thu	52	—	unknown	18:35–20:40 (good, 2.08 h)	87.1° 14:40	11.22	41%	107.3°
2032-11-26 Fri	50	—	unknown	18:35–20:35 (good, 2.0 h)	87.1° 14:35	11.25	32%	101.3°
2032-11-27 Sat	48	—	unknown	18:35–20:30 (good, 1.92 h)	87.1° 14:30	11.27	23%	94.9°
2032-11-28 Sun	47	—	unknown	18:35–20:25 (good, 1.83 h)	87.1° 14:25	11.29	16%	88.2°
2032-11-29 Mon	46	—	unknown	18:35–20:25 (good, 1.83 h)	87.1° 14:25	11.3	9%	81.5°
2032-11-30 Tue	44	—	unknown	18:35–20:20 (good, 1.75 h)	87.1° 14:20	11.32	4%	74.9°
2032-12-01 Wed	42	—	unknown	18:35–20:15 (good, 1.67 h)	87.1° 14:15	11.34	1%	68.7°
2032-12-02 Thu	41	—	unknown	18:35–20:10 (good, 1.58 h)	87.1° 14:10	11.36	0%	63.4°
2032-12-03 Fri	40	—	unknown	18:35–20:05 (good, 1.5 h)	87.1° 14:10	11.37	2%	59.4°
2032-12-04 Sat	38	—	unknown	18:35–20:05 (good, 1.5 h)	87.1° 14:05	11.39	5%	57.1°
2032-12-05 Sun	34	—	unknown	18:35–20:00 (good, 1.42 h)	87.1° 14:00	11.4	11%	57.0°
2032-12-06 Mon	30	—	unknown	18:35–19:50 (good, 1.25 h)	87.1° 13:55	11.41	20%	59.0°
2032-12-07 Tue	26	—	unknown	18:35–19:40 (good, 1.08 h)	87.1° 13:50	11.43	29%	63.1°

Download: CSV · JSON

💡 API

curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2032-11-08&days=30"
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&days=30&format=csv" -o m31-calendar.csv

One row per night: score_astronomy always, score_weather / score only where a forecast or history exists (null otherwise, with weather_source saying which), best window, dark hours, Moon illumination and separation, transit. 7–60 nights. Errors: 400 with invalid_date or target_unresolved. Results are cached for six hours; calculation version 2026-10-10.1.