← 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. |
|---|---|---|---|---|---|---|---|---|
| 2044-06-13 Mon | 30 | — | unknown | 23:10–00:05 (good, 0.92 h) | 50.1° 20:20 | 4.47 | 90% | 113.8° |
| 2044-06-14 Tue | 30 | — | unknown | 23:10–00:05 (good, 0.92 h) | 50.1° 20:20 | 4.46 | 84% | 125.7° |
| 2044-06-15 Wed | 29 | — | unknown | 23:10–00:05 (good, 0.92 h) | 50.1° 20:15 | 4.45 | 76% | 137.6° |
| 2044-06-16 Thu | 27 | — | unknown | 23:10–00:00 (good, 0.83 h) | 50.1° 20:10 | 4.44 | 68% | 149.6° |
| 2044-06-17 Fri | 26 | — | unknown | 23:10–00:00 (good, 0.83 h) | 50.1° 20:05 | 4.43 | 58% | 161.6° |
| 2044-06-18 Sat | 25 | — | unknown | 23:10–23:55 (good, 0.75 h) | 50.1° 20:00 | 4.42 | 48% | 172.1° |
| 2044-06-19 Sun | 23 | — | unknown | 23:15–23:50 (good, 0.58 h) | 50.1° 20:00 | 4.42 | 37% | 169.0° |
| 2044-06-20 Mon | 22 | — | unknown | 23:15–23:45 (good, 0.5 h) | 50.1° 19:55 | 4.42 | 27% | 156.5° |
| 2044-06-21 Tue | 20 | — | unknown | 23:15–23:40 (good, 0.42 h) | 50.1° 19:50 | 4.42 | 17% | 142.8° |
| 2044-06-22 Wed | 18 | — | unknown | 23:15–23:40 (good, 0.42 h) | 50.1° 19:45 | 4.43 | 9% | 128.4° |
| 2044-06-23 Thu | 16 | — | unknown | 23:15–23:35 (good, 0.33 h) | 50.1° 19:40 | 4.43 | 4% | 113.6° |
| 2044-06-24 Fri | 15 | — | unknown | 23:15–23:30 (good, 0.25 h) | 50.1° 19:40 | 4.44 | 1% | 98.6° |
| 2044-06-25 Sat | 14 | — | unknown | 23:15–23:25 (good, 0.17 h) | 50.1° 19:35 | 4.45 | 0% | 83.4° |
| 2044-06-26 Sun | 12 | — | unknown | 23:15–23:20 (good, 0.08 h) | 50.1° 19:30 | 4.46 | 4% | 68.3° |
| 2044-06-27 Mon | 11 | — | unknown | 23:15–23:20 (good, 0.08 h) | 50.1° 19:25 | 4.48 | 9% | 53.6° |
| 2044-06-28 Tue | 10 | — | unknown | 22:20–23:45 (marginal, 1.42 h) | 50.1° 19:25 | 4.49 | 17% | 39.2° |
| 2044-06-29 Wed | 7 | — | unknown | 22:20–23:00 (marginal, 0.67 h) | 50.1° 19:20 | 4.51 | 26% | 25.5° |
| 2044-06-30 Thu | 6 | — | unknown | 23:10–23:35 (marginal, 0.42 h) | 50.1° 19:15 | 4.53 | 37% | 12.9° |
| 2044-07-01 Fri | 4 | — | unknown | 23:10–23:30 (marginal, 0.33 h) | 50.1° 19:10 | 4.55 | 47% | 7.1° |
| 2044-07-02 Sat | 3 | — | unknown | 23:10–23:25 (marginal, 0.25 h) | 50.1° 19:05 | 4.58 | 57% | 16.4° |
| 2044-07-03 Sun | 2 | — | unknown | 23:10–23:15 (marginal, 0.08 h) | 50.1° 19:05 | 4.6 | 67% | 28.2° |
| 2044-07-04 Mon | 2 | — | unknown | — | 50.1° 19:00 | 4.63 | 76% | 40.2° |
| 2044-07-05 Tue | 2 | — | unknown | — | 50.1° 18:55 | 4.66 | 84% | 52.1° |
| 2044-07-06 Wed | 2 | — | unknown | — | 50.1° 18:50 | 4.69 | 90% | 63.9° |
| 2044-07-07 Thu | 2 | — | unknown | — | 50.1° 18:45 | 4.72 | 95% | 75.7° |
| 2044-07-08 Fri | 2 | — | unknown | — | 50.1° 18:45 | 4.75 | 98% | 87.4° |
| 2044-07-09 Sat | 2 | — | unknown | — | 50.1° 18:40 | 4.79 | 100% | 99.2° |
| 2044-07-10 Sun | 2 | — | unknown | — | 50.1° 18:35 | 4.82 | 100% | 110.9° |
| 2044-07-11 Mon | 2 | — | unknown | — | 50.1° 18:30 | 4.86 | 97% | 122.8° |
| 2044-07-12 Tue | 2 | — | unknown | 22:15–22:20 (marginal, 0.08 h) | 50.1° 18:30 | 4.9 | 94% | 134.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2044-06-13&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.