← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-10-19 Mon | 0 | — | unknown | — | 50.1° 12:00 | 9.99 | 97% | 138.8° |
| 2043-10-20 Tue | 0 | — | unknown | — | 50.1° 11:55 | 10.03 | 91% | 123.9° |
| 2043-10-21 Wed | 0 | — | unknown | — | 50.1° 11:50 | 10.07 | 84% | 109.1° |
| 2043-10-22 Thu | 0 | — | unknown | — | 50.1° 11:45 | 10.11 | 74% | 94.6° |
| 2043-10-23 Fri | 0 | — | unknown | — | 50.1° 11:40 | 10.15 | 63% | 80.4° |
| 2043-10-24 Sat | 0 | — | unknown | — | 50.1° 10:40 | 10.19 | 52% | 66.6° |
| 2043-10-25 Sun | 0 | — | unknown | — | 50.1° 10:35 | 10.23 | 41% | 53.1° |
| 2043-10-26 Mon | 0 | — | unknown | — | 50.1° 10:30 | 10.27 | 31% | 39.9° |
| 2043-10-27 Tue | 0 | — | unknown | — | 50.1° 10:25 | 10.31 | 22% | 27.2° |
| 2043-10-28 Wed | 0 | — | unknown | — | 50.1° 10:20 | 10.35 | 14% | 15.0° |
| 2043-10-29 Thu | 0 | — | unknown | — | 50.1° 10:20 | 10.39 | 8% | 5.5° |
| 2043-10-30 Fri | 0 | — | unknown | — | 50.1° 10:15 | 10.42 | 3% | 12.1° |
| 2043-10-31 Sat | 0 | — | unknown | — | 50.1° 10:10 | 10.46 | 1% | 23.6° |
| 2043-11-01 Sun | 0 | — | unknown | — | 50.1° 10:05 | 10.5 | 0% | 35.4° |
| 2043-11-02 Mon | 0 | — | unknown | — | 50.1° 10:00 | 10.53 | 1% | 47.2° |
| 2043-11-03 Tue | 1 | — | unknown | — | 50.1° 10:00 | 10.57 | 4% | 59.0° |
| 2043-11-04 Wed | 1 | — | unknown | — | 50.1° 09:55 | 10.6 | 8% | 70.7° |
| 2043-11-05 Thu | 1 | — | unknown | — | 50.1° 09:50 | 10.64 | 14% | 82.5° |
| 2043-11-06 Fri | 1 | — | unknown | — | 50.1° 09:45 | 10.67 | 22% | 94.3° |
| 2043-11-07 Sat | 1 | — | unknown | 05:55–06:00 (marginal, 0.08 h) | 50.1° 09:45 | 10.71 | 30% | 106.2° |
| 2043-11-08 Sun | 3 | — | unknown | 05:50–06:00 (marginal, 0.17 h) | 50.1° 09:40 | 10.74 | 39% | 118.3° |
| 2043-11-09 Mon | 3 | — | unknown | 05:50–06:05 (marginal, 0.25 h) | 50.1° 09:35 | 10.77 | 49% | 130.6° |
| 2043-11-10 Tue | 4 | — | unknown | 05:15–05:30 (marginal, 0.25 h) | 50.1° 09:30 | 10.8 | 59% | 143.2° |
| 2043-11-11 Wed | 6 | — | unknown | 05:10–05:35 (marginal, 0.42 h) | 50.1° 09:25 | 10.84 | 69% | 156.1° |
| 2043-11-12 Thu | 6 | — | unknown | 05:10–06:05 (marginal, 0.92 h) | 50.1° 09:25 | 10.87 | 79% | 168.9° |
| 2043-11-13 Fri | 8 | — | unknown | 05:05–06:10 (marginal, 1.08 h) | 50.1° 09:20 | 10.9 | 87% | 173.0° |
| 2043-11-14 Sat | 9 | — | unknown | 05:30–05:35 (good, 0.08 h) | 50.1° 09:15 | 10.93 | 94% | 160.2° |
| 2043-11-15 Sun | 9 | — | unknown | 04:55–06:10 (marginal, 1.25 h) | 50.1° 09:10 | 10.96 | 98% | 145.6° |
| 2043-11-16 Mon | 10 | — | unknown | 05:30–05:40 (good, 0.17 h) | 50.1° 09:05 | 10.98 | 100% | 130.6° |
| 2043-11-17 Tue | 10 | — | unknown | 05:30–05:40 (good, 0.17 h) | 50.1° 09:05 | 11.01 | 98% | 115.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-10-19&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.