← single night · whole-night plan
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.
| night of | astronomy | weather | overall | best window | highest | dark h | Moon | Moon sep. |
|---|---|---|---|---|---|---|---|---|
| 2039-10-31 Mon | 0 | — | unknown | — | 50.1° 10:10 | 10.46 | 100% | 147.8° |
| 2039-11-01 Tue | 0 | — | unknown | — | 50.1° 10:05 | 10.5 | 99% | 135.6° |
| 2039-11-02 Wed | 0 | — | unknown | — | 50.1° 10:00 | 10.53 | 96% | 123.5° |
| 2039-11-03 Thu | 0 | — | unknown | — | 50.1° 10:00 | 10.57 | 92% | 111.6° |
| 2039-11-04 Fri | 0 | — | unknown | — | 50.1° 09:55 | 10.6 | 86% | 99.7° |
| 2039-11-05 Sat | 1 | — | unknown | — | 50.1° 09:50 | 10.64 | 79% | 87.9° |
| 2039-11-06 Sun | 1 | — | unknown | — | 50.1° 09:45 | 10.67 | 71% | 76.0° |
| 2039-11-07 Mon | 1 | — | unknown | — | 50.1° 09:45 | 10.71 | 62% | 64.1° |
| 2039-11-08 Tue | 1 | — | unknown | — | 50.1° 09:40 | 10.74 | 52% | 52.0° |
| 2039-11-09 Wed | 2 | — | unknown | 05:20–05:30 (marginal, 0.17 h) | 50.1° 09:35 | 10.77 | 42% | 39.6° |
| 2039-11-10 Thu | 3 | — | unknown | 05:15–05:30 (marginal, 0.25 h) | 50.1° 09:30 | 10.8 | 33% | 26.9° |
| 2039-11-11 Fri | 4 | — | unknown | 05:10–05:35 (marginal, 0.42 h) | 50.1° 09:25 | 10.83 | 23% | 13.8° |
| 2039-11-12 Sat | 6 | — | unknown | 05:10–05:35 (marginal, 0.42 h) | 50.1° 09:25 | 10.87 | 15% | 0.3° |
| 2039-11-13 Sun | 7 | — | unknown | 05:05–06:10 (marginal, 1.08 h) | 50.1° 09:20 | 10.9 | 8% | 13.8° |
| 2039-11-14 Mon | 9 | — | unknown | 05:30–05:35 (good, 0.08 h) | 50.1° 09:15 | 10.93 | 3% | 28.2° |
| 2039-11-15 Tue | 11 | — | unknown | 05:25–05:35 (good, 0.17 h) | 50.1° 09:10 | 10.95 | 0% | 43.0° |
| 2039-11-16 Wed | 13 | — | unknown | 05:20–05:40 (good, 0.33 h) | 50.1° 09:05 | 10.98 | 1% | 58.1° |
| 2039-11-17 Thu | 14 | — | unknown | 05:15–05:40 (good, 0.42 h) | 50.1° 09:05 | 11.01 | 4% | 73.2° |
| 2039-11-18 Fri | 16 | — | unknown | 05:15–05:40 (good, 0.42 h) | 50.1° 09:00 | 11.04 | 10% | 88.2° |
| 2039-11-19 Sat | 18 | — | unknown | 05:10–05:40 (good, 0.5 h) | 50.1° 08:55 | 11.06 | 19% | 103.0° |
| 2039-11-20 Sun | 20 | — | unknown | 05:05–05:40 (good, 0.58 h) | 50.1° 08:50 | 11.09 | 29% | 117.4° |
| 2039-11-21 Mon | 21 | — | unknown | 05:00–05:45 (good, 0.75 h) | 50.1° 08:50 | 11.12 | 39% | 131.5° |
| 2039-11-22 Tue | 23 | — | unknown | 04:55–05:45 (good, 0.83 h) | 50.1° 08:45 | 11.14 | 50% | 145.2° |
| 2039-11-23 Wed | 25 | — | unknown | 04:55–05:45 (good, 0.83 h) | 50.1° 08:40 | 11.16 | 61% | 158.5° |
| 2039-11-24 Thu | 26 | — | unknown | 04:50–05:45 (good, 0.92 h) | 50.1° 08:35 | 11.19 | 71% | 171.5° |
| 2039-11-25 Fri | 28 | — | unknown | 04:45–05:45 (good, 1.0 h) | 50.1° 08:30 | 11.21 | 80% | 175.8° |
| 2039-11-26 Sat | 29 | — | unknown | 04:40–05:50 (good, 1.17 h) | 50.1° 08:30 | 11.23 | 87% | 163.3° |
| 2039-11-27 Sun | 30 | — | unknown | 04:45–05:50 (good, 1.08 h) | 50.1° 08:25 | 11.25 | 93% | 151.0° |
| 2039-11-28 Mon | 28 | — | unknown | 04:45–05:50 (good, 1.08 h) | 50.1° 08:20 | 11.27 | 97% | 138.8° |
| 2039-11-29 Tue | 28 | — | unknown | 04:40–05:50 (good, 1.17 h) | 50.1° 08:15 | 11.29 | 99% | 126.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2039-10-31&days=30"
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&days=30&format=csv" -o m31-calendar.csvOne 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.