← 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. |
|---|---|---|---|---|---|---|---|---|
| 2044-03-12 Sat | 7 | — | unknown | 20:00–20:35 (marginal, 0.58 h) | 79.2° 14:35 | 9.09 | 99% | 125.9° |
| 2044-03-13 Sun | 6 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 79.2° 14:30 | 9.04 | 100% | 138.4° |
| 2044-03-14 Mon | 6 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 79.2° 14:25 | 8.99 | 99% | 150.1° |
| 2044-03-15 Tue | 5 | — | unknown | 20:05–20:25 (marginal, 0.33 h) | 79.2° 14:20 | 8.94 | 95% | 159.8° |
| 2044-03-16 Wed | 4 | — | unknown | 20:05–20:20 (marginal, 0.25 h) | 79.2° 14:20 | 8.89 | 90% | 164.3° |
| 2044-03-17 Thu | 3 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 79.2° 14:15 | 8.84 | 83% | 160.2° |
| 2044-03-18 Fri | 3 | — | unknown | 19:35–19:45 (marginal, 0.17 h) | 79.2° 14:10 | 8.79 | 75% | 151.3° |
| 2044-03-19 Sat | 2 | — | unknown | 19:35–19:40 (marginal, 0.08 h) | 79.2° 14:05 | 8.74 | 66% | 140.9° |
| 2044-03-20 Sun | 1 | — | unknown | — | 79.2° 14:05 | 8.69 | 57% | 129.9° |
| 2044-03-21 Mon | 1 | — | unknown | — | 79.2° 14:00 | 8.64 | 48% | 118.8° |
| 2044-03-22 Tue | 1 | — | unknown | — | 79.2° 13:55 | 8.58 | 38% | 107.4° |
| 2044-03-23 Wed | 1 | — | unknown | — | 79.2° 13:50 | 8.53 | 29% | 95.8° |
| 2044-03-24 Thu | 0 | — | unknown | — | 79.2° 13:45 | 8.48 | 21% | 84.0° |
| 2044-03-25 Fri | 0 | — | unknown | — | 79.2° 13:45 | 8.43 | 13% | 71.9° |
| 2044-03-26 Sat | 0 | — | unknown | — | 79.2° 13:40 | 8.37 | 7% | 59.6° |
| 2044-03-27 Sun | 0 | — | unknown | — | 79.2° 14:35 | 8.32 | 3% | 47.1° |
| 2044-03-28 Mon | 0 | — | unknown | — | 79.2° 14:30 | 8.27 | 0% | 34.7° |
| 2044-03-29 Tue | 0 | — | unknown | — | 79.2° 14:25 | 8.21 | 0% | 23.3° |
| 2044-03-30 Wed | 0 | — | unknown | — | 79.2° 14:25 | 8.16 | 3% | 16.1° |
| 2044-03-31 Thu | 0 | — | unknown | — | 79.2° 14:20 | 8.1 | 8% | 19.2° |
| 2044-04-01 Fri | 0 | — | unknown | — | 79.2° 14:15 | 8.05 | 16% | 29.6° |
| 2044-04-02 Sat | 0 | — | unknown | — | 79.2° 14:10 | 7.99 | 25% | 42.3° |
| 2044-04-03 Sun | 0 | — | unknown | — | 79.2° 14:10 | 7.94 | 36% | 55.7° |
| 2044-04-04 Mon | 0 | — | unknown | — | 79.2° 14:05 | 7.88 | 47% | 69.2° |
| 2044-04-05 Tue | 0 | — | unknown | — | 79.2° 14:00 | 7.83 | 59% | 82.6° |
| 2044-04-06 Wed | 0 | — | unknown | — | 79.2° 13:55 | 7.77 | 70% | 96.0° |
| 2044-04-07 Thu | 0 | — | unknown | — | 79.2° 13:50 | 7.71 | 79% | 109.2° |
| 2044-04-08 Fri | 0 | — | unknown | — | 79.2° 13:50 | 7.66 | 87% | 122.0° |
| 2044-04-09 Sat | 0 | — | unknown | — | 79.2° 13:45 | 7.6 | 94% | 134.5° |
| 2044-04-10 Sun | 0 | — | unknown | — | 79.2° 13:40 | 7.54 | 98% | 146.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2044-03-12&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.