← 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. |
|---|---|---|---|---|---|---|---|---|
| 2047-06-18 Tue | 26 | — | unknown | 23:10–23:55 (good, 0.75 h) | 50.1° 20:05 | 4.43 | 18% | 147.2° |
| 2047-06-19 Wed | 24 | — | unknown | 23:10–23:55 (good, 0.75 h) | 50.1° 20:00 | 4.42 | 12% | 135.8° |
| 2047-06-20 Thu | 22 | — | unknown | 23:15–23:50 (good, 0.58 h) | 50.1° 19:55 | 4.42 | 6% | 124.1° |
| 2047-06-21 Fri | 21 | — | unknown | 23:15–23:45 (good, 0.5 h) | 50.1° 19:55 | 4.42 | 2% | 112.2° |
| 2047-06-22 Sat | 19 | — | unknown | 23:15–23:40 (good, 0.42 h) | 50.1° 19:50 | 4.42 | 0% | 100.1° |
| 2047-06-23 Sun | 18 | — | unknown | 23:15–23:35 (good, 0.33 h) | 50.1° 19:45 | 4.43 | 0% | 87.8° |
| 2047-06-24 Mon | 16 | — | unknown | 23:15–23:35 (good, 0.33 h) | 50.1° 19:40 | 4.44 | 2% | 75.2° |
| 2047-06-25 Tue | 14 | — | unknown | 23:15–23:30 (good, 0.25 h) | 50.1° 19:40 | 4.44 | 6% | 62.5° |
| 2047-06-26 Wed | 13 | — | unknown | 23:15–23:25 (good, 0.17 h) | 50.1° 19:35 | 4.45 | 13% | 49.6° |
| 2047-06-27 Thu | 10 | — | unknown | 22:20–23:50 (marginal, 1.5 h) | 50.1° 19:30 | 4.47 | 21% | 36.6° |
| 2047-06-28 Fri | 8 | — | unknown | 22:20–23:05 (marginal, 0.75 h) | 50.1° 19:25 | 4.48 | 30% | 23.9° |
| 2047-06-29 Sat | 7 | — | unknown | 23:10–23:40 (marginal, 0.5 h) | 50.1° 19:20 | 4.5 | 41% | 12.8° |
| 2047-06-30 Sun | 5 | — | unknown | 23:10–23:40 (marginal, 0.5 h) | 50.1° 19:20 | 4.52 | 52% | 11.6° |
| 2047-07-01 Mon | 4 | — | unknown | 23:10–23:25 (marginal, 0.25 h) | 50.1° 19:15 | 4.54 | 64% | 22.4° |
| 2047-07-02 Tue | 3 | — | unknown | 23:10–23:20 (marginal, 0.17 h) | 50.1° 19:10 | 4.56 | 74% | 35.8° |
| 2047-07-03 Wed | 2 | — | unknown | 23:10–23:15 (marginal, 0.08 h) | 50.1° 19:05 | 4.58 | 84% | 49.8° |
| 2047-07-04 Thu | 2 | — | unknown | 23:10–23:15 (marginal, 0.08 h) | 50.1° 19:00 | 4.61 | 92% | 64.0° |
| 2047-07-05 Fri | 2 | — | unknown | 23:10–23:15 (marginal, 0.08 h) | 50.1° 19:00 | 4.64 | 97% | 78.2° |
| 2047-07-06 Sat | 2 | — | unknown | 23:10–23:15 (marginal, 0.08 h) | 50.1° 18:55 | 4.67 | 100% | 92.3° |
| 2047-07-07 Sun | 2 | — | unknown | 22:15–22:25 (marginal, 0.17 h) | 50.1° 18:50 | 4.7 | 100% | 106.2° |
| 2047-07-08 Mon | 3 | — | unknown | 22:15–22:30 (marginal, 0.25 h) | 50.1° 18:45 | 4.73 | 97% | 119.7° |
| 2047-07-09 Tue | 3 | — | unknown | 22:15–22:25 (marginal, 0.17 h) | 50.1° 18:45 | 4.76 | 92% | 132.8° |
| 2047-07-10 Wed | 2 | — | unknown | 22:15–22:30 (marginal, 0.25 h) | 50.1° 18:40 | 4.8 | 86% | 145.4° |
| 2047-07-11 Thu | 2 | — | unknown | 22:15–22:25 (marginal, 0.17 h) | 50.1° 18:35 | 4.83 | 78% | 157.2° |
| 2047-07-12 Fri | 2 | — | unknown | 22:15–22:20 (marginal, 0.08 h) | 50.1° 18:30 | 4.87 | 70% | 167.1° |
| 2047-07-13 Sat | 2 | — | unknown | 22:15–22:20 (marginal, 0.08 h) | 50.1° 18:25 | 4.91 | 60% | 169.3° |
| 2047-07-14 Sun | 2 | — | unknown | 22:10–22:15 (marginal, 0.08 h) | 50.1° 18:25 | 4.95 | 51% | 161.3° |
| 2047-07-15 Mon | 1 | — | unknown | — | 50.1° 18:20 | 5.0 | 41% | 150.7° |
| 2047-07-16 Tue | 1 | — | unknown | — | 50.1° 18:15 | 5.04 | 32% | 139.4° |
| 2047-07-17 Wed | 1 | — | unknown | — | 50.1° 18:10 | 5.08 | 24% | 127.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2047-06-18&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.