← 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. |
|---|---|---|---|---|---|---|---|---|
| 2044-06-23 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° |
| 2044-07-13 Wed | 2 | — | unknown | — | 50.1° 18:25 | 4.94 | 88% | 146.7° |
| 2044-07-14 Thu | 1 | — | unknown | — | 50.1° 18:20 | 4.98 | 81% | 158.7° |
| 2044-07-15 Fri | 1 | — | unknown | — | 50.1° 18:15 | 5.03 | 72% | 169.8° |
| 2044-07-16 Sat | 1 | — | unknown | — | 50.1° 18:10 | 5.07 | 62% | 171.4° |
| 2044-07-17 Sun | 1 | — | unknown | — | 50.1° 18:10 | 5.11 | 52% | 160.4° |
| 2044-07-18 Mon | 1 | — | unknown | — | 50.1° 18:05 | 5.16 | 41% | 147.3° |
| 2044-07-19 Tue | 1 | — | unknown | — | 50.1° 18:00 | 5.21 | 30% | 133.6° |
| 2044-07-20 Wed | 1 | — | unknown | — | 50.1° 17:55 | 5.26 | 20% | 119.4° |
| 2044-07-21 Thu | 0 | — | unknown | — | 50.1° 17:50 | 5.3 | 12% | 104.8° |
| 2044-07-22 Fri | 0 | — | unknown | — | 50.1° 17:50 | 5.35 | 5% | 90.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2044-06-23&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.