← 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. |
|---|---|---|---|---|---|---|---|---|
| 2036-01-25 Fri | 0 | — | unknown | — | 71.1° 12:05 | 10.98 | 6% | 46.7° |
| 2036-01-26 Sat | 0 | — | unknown | — | 71.1° 12:00 | 10.96 | 2% | 42.4° |
| 2036-01-27 Sun | 0 | — | unknown | — | 71.1° 11:55 | 10.93 | 0% | 40.5° |
| 2036-01-28 Mon | 1 | — | unknown | — | 71.1° 11:50 | 10.9 | 0% | 41.4° |
| 2036-01-29 Tue | 1 | — | unknown | — | 71.1° 11:45 | 10.87 | 2% | 45.0° |
| 2036-01-30 Wed | 1 | — | unknown | — | 71.1° 11:40 | 10.84 | 6% | 50.7° |
| 2036-01-31 Thu | 1 | — | unknown | — | 71.1° 11:40 | 10.8 | 11% | 58.1° |
| 2036-02-01 Fri | 1 | — | unknown | — | 71.1° 11:35 | 10.77 | 18% | 66.5° |
| 2036-02-02 Sat | 1 | — | unknown | — | 71.1° 11:30 | 10.74 | 26% | 75.6° |
| 2036-02-03 Sun | 2 | — | unknown | 06:25–06:30 (marginal, 0.08 h) | 71.1° 11:25 | 10.7 | 36% | 85.3° |
| 2036-02-04 Mon | 2 | — | unknown | 06:20–06:30 (marginal, 0.17 h) | 71.1° 11:25 | 10.67 | 46% | 95.3° |
| 2036-02-05 Tue | 3 | — | unknown | 06:20–06:30 (marginal, 0.17 h) | 71.1° 11:20 | 10.64 | 57% | 105.5° |
| 2036-02-06 Wed | 3 | — | unknown | 06:15–06:30 (marginal, 0.25 h) | 71.1° 11:15 | 10.6 | 68% | 115.5° |
| 2036-02-07 Thu | 3 | — | unknown | 06:10–06:25 (marginal, 0.25 h) | 71.1° 11:10 | 10.57 | 78% | 124.9° |
| 2036-02-08 Fri | 4 | — | unknown | 05:40–05:55 (marginal, 0.25 h) | 71.1° 11:05 | 10.53 | 87% | 132.9° |
| 2036-02-09 Sat | 4 | — | unknown | 06:00–06:25 (marginal, 0.42 h) | 71.1° 11:05 | 10.49 | 94% | 138.2° |
| 2036-02-10 Sun | 4 | — | unknown | 05:30–05:50 (marginal, 0.33 h) | 71.1° 11:00 | 10.46 | 98% | 139.5° |
| 2036-02-11 Mon | 5 | — | unknown | 05:25–05:50 (marginal, 0.42 h) | 71.1° 10:55 | 10.42 | 100% | 136.2° |
| 2036-02-12 Tue | 5 | — | unknown | 05:25–05:50 (marginal, 0.42 h) | 71.1° 10:50 | 10.38 | 98% | 129.3° |
| 2036-02-13 Wed | 6 | — | unknown | 05:20–05:50 (marginal, 0.5 h) | 71.1° 10:45 | 10.34 | 94% | 120.4° |
| 2036-02-14 Thu | 6 | — | unknown | 05:15–05:45 (marginal, 0.5 h) | 71.1° 10:45 | 10.3 | 88% | 110.6° |
| 2036-02-15 Fri | 6 | — | unknown | 05:10–05:45 (marginal, 0.58 h) | 71.1° 10:40 | 10.26 | 80% | 100.4° |
| 2036-02-16 Sat | 6 | — | unknown | 05:05–05:45 (marginal, 0.67 h) | 71.1° 10:35 | 10.22 | 70% | 90.3° |
| 2036-02-17 Sun | 7 | — | unknown | 05:05–05:45 (marginal, 0.67 h) | 71.1° 10:30 | 10.18 | 60% | 80.6° |
| 2036-02-18 Mon | 7 | — | unknown | 05:00–05:40 (marginal, 0.67 h) | 71.1° 10:30 | 10.14 | 50% | 71.3° |
| 2036-02-19 Tue | 9 | — | unknown | 04:55–06:10 (marginal, 1.25 h) | 71.1° 10:25 | 10.1 | 41% | 62.7° |
| 2036-02-20 Wed | 11 | — | unknown | 05:30–05:40 (good, 0.17 h) | 71.1° 10:20 | 10.06 | 32% | 54.9° |
| 2036-02-21 Thu | 12 | — | unknown | 05:25–05:35 (good, 0.17 h) | 71.1° 10:15 | 10.02 | 23% | 48.3° |
| 2036-02-22 Fri | 13 | — | unknown | 05:15–05:35 (good, 0.33 h) | 71.1° 10:10 | 9.97 | 16% | 43.3° |
| 2036-02-23 Sat | 16 | — | unknown | 05:05–05:35 (good, 0.5 h) | 71.1° 10:10 | 9.93 | 10% | 40.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-01-25&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.