← 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. |
|---|---|---|---|---|---|---|---|---|
| 2035-03-11 Sun | 11 | — | unknown | 20:00–20:15 (good, 0.25 h) | 79.1° 14:40 | 9.18 | 5% | 27.7° |
| 2035-03-12 Mon | 9 | — | unknown | 20:00–20:05 (good, 0.08 h) | 79.1° 14:35 | 9.13 | 11% | 23.3° |
| 2035-03-13 Tue | 7 | — | unknown | 20:00–20:35 (marginal, 0.58 h) | 79.1° 14:35 | 9.09 | 19% | 26.4° |
| 2035-03-14 Wed | 5 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 79.1° 14:30 | 9.04 | 29% | 35.1° |
| 2035-03-15 Thu | 3 | — | unknown | 20:05–20:25 (marginal, 0.33 h) | 79.1° 14:25 | 8.99 | 40% | 46.4° |
| 2035-03-16 Fri | 2 | — | unknown | 20:05–20:20 (marginal, 0.25 h) | 79.1° 14:20 | 8.94 | 51% | 58.6° |
| 2035-03-17 Sat | 2 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 79.1° 14:15 | 8.88 | 62% | 71.3° |
| 2035-03-18 Sun | 2 | — | unknown | 20:05–20:10 (marginal, 0.08 h) | 79.1° 14:15 | 8.83 | 73% | 84.1° |
| 2035-03-19 Mon | 1 | — | unknown | 20:05–20:10 (marginal, 0.08 h) | 79.1° 14:10 | 8.78 | 82% | 96.8° |
| 2035-03-20 Tue | 1 | — | unknown | — | 79.1° 14:05 | 8.73 | 90% | 109.4° |
| 2035-03-21 Wed | 1 | — | unknown | — | 79.1° 14:00 | 8.68 | 96% | 121.5° |
| 2035-03-22 Thu | 1 | — | unknown | — | 79.1° 14:00 | 8.63 | 99% | 133.1° |
| 2035-03-23 Fri | 1 | — | unknown | — | 79.1° 13:55 | 8.58 | 100% | 143.6° |
| 2035-03-24 Sat | 0 | — | unknown | — | 79.1° 13:50 | 8.52 | 99% | 152.0° |
| 2035-03-25 Sun | 0 | — | unknown | — | 79.1° 14:45 | 8.47 | 96% | 156.5° |
| 2035-03-26 Mon | 0 | — | unknown | — | 79.1° 14:40 | 8.42 | 91% | 155.1° |
| 2035-03-27 Tue | 0 | — | unknown | — | 79.1° 14:40 | 8.36 | 85% | 148.9° |
| 2035-03-28 Wed | 0 | — | unknown | — | 79.1° 14:35 | 8.31 | 77% | 140.2° |
| 2035-03-29 Thu | 0 | — | unknown | — | 79.1° 14:30 | 8.26 | 69% | 130.5° |
| 2035-03-30 Fri | 0 | — | unknown | — | 79.1° 14:25 | 8.2 | 60% | 120.1° |
| 2035-03-31 Sat | 0 | — | unknown | — | 79.1° 14:20 | 8.15 | 50% | 109.4° |
| 2035-04-01 Sun | 0 | — | unknown | — | 79.1° 14:20 | 8.09 | 41% | 98.5° |
| 2035-04-02 Mon | 0 | — | unknown | — | 79.1° 14:15 | 8.04 | 31% | 87.3° |
| 2035-04-03 Tue | 0 | — | unknown | — | 79.1° 14:10 | 7.98 | 22% | 75.8° |
| 2035-04-04 Wed | 0 | — | unknown | — | 79.1° 14:05 | 7.93 | 14% | 64.2° |
| 2035-04-05 Thu | 0 | — | unknown | — | 79.1° 14:05 | 7.87 | 8% | 52.5° |
| 2035-04-06 Fri | 0 | — | unknown | — | 79.1° 14:00 | 7.82 | 3% | 41.0° |
| 2035-04-07 Sat | 0 | — | unknown | — | 79.1° 13:55 | 7.76 | 0% | 30.8° |
| 2035-04-08 Sun | 0 | — | unknown | — | 79.1° 13:50 | 7.7 | 0% | 24.1° |
| 2035-04-09 Mon | 0 | — | unknown | — | 79.1° 13:45 | 7.65 | 3% | 24.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2035-03-11&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.