← 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. |
|---|---|---|---|---|---|---|---|---|
| 2034-03-22 Wed | 27 | — | unknown | 20:10–21:15 (good, 1.08 h) | 42.9° 17:55 | 8.61 | 9% | 50.4° |
| 2034-03-23 Thu | 22 | — | unknown | 20:15–21:05 (good, 0.83 h) | 42.9° 17:55 | 8.56 | 17% | 38.3° |
| 2034-03-24 Fri | 17 | — | unknown | 20:15–20:50 (good, 0.58 h) | 42.9° 17:50 | 8.51 | 27% | 28.5° |
| 2034-03-25 Sat | 13 | — | unknown | 20:15–20:25 (good, 0.17 h) | 42.9° 17:45 | 8.46 | 38% | 23.6° |
| 2034-03-26 Sun | 9 | — | unknown | 21:15–22:25 (marginal, 1.17 h) | 42.9° 18:40 | 8.4 | 49% | 25.9° |
| 2034-03-27 Mon | 7 | — | unknown | 21:20–22:10 (marginal, 0.83 h) | 42.9° 18:35 | 8.35 | 60% | 33.6° |
| 2034-03-28 Tue | 5 | — | unknown | 21:20–22:00 (marginal, 0.67 h) | 42.9° 18:35 | 8.3 | 70% | 43.7° |
| 2034-03-29 Wed | 5 | — | unknown | 21:20–21:55 (marginal, 0.58 h) | 42.9° 18:30 | 8.24 | 79% | 54.6° |
| 2034-03-30 Thu | 5 | — | unknown | 21:20–21:55 (marginal, 0.58 h) | 42.9° 18:25 | 8.19 | 86% | 65.8° |
| 2034-03-31 Fri | 5 | — | unknown | 21:25–22:00 (marginal, 0.58 h) | 42.9° 18:20 | 8.13 | 92% | 77.1° |
| 2034-04-01 Sat | 6 | — | unknown | 21:25–22:05 (marginal, 0.67 h) | 42.9° 18:20 | 8.08 | 97% | 88.3° |
| 2034-04-02 Sun | 6 | — | unknown | 21:25–22:05 (marginal, 0.67 h) | 42.9° 18:15 | 8.02 | 99% | 99.4° |
| 2034-04-03 Mon | 6 | — | unknown | 21:25–22:00 (marginal, 0.58 h) | 42.9° 18:10 | 7.97 | 100% | 110.3° |
| 2034-04-04 Tue | 5 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 42.9° 18:05 | 7.91 | 99% | 121.0° |
| 2034-04-05 Wed | 5 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 42.9° 18:00 | 7.86 | 96% | 131.3° |
| 2034-04-06 Thu | 5 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 42.9° 18:00 | 7.8 | 91% | 141.0° |
| 2034-04-07 Fri | 3 | — | unknown | 21:00–21:15 (marginal, 0.25 h) | 42.9° 17:55 | 7.75 | 85% | 149.4° |
| 2034-04-08 Sat | 3 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 42.9° 17:50 | 7.69 | 78% | 155.2° |
| 2034-04-09 Sun | 2 | — | unknown | 21:00–21:05 (marginal, 0.08 h) | 42.9° 17:45 | 7.63 | 70% | 156.3° |
| 2034-04-10 Mon | 2 | — | unknown | — | 42.9° 17:40 | 7.58 | 60% | 151.9° |
| 2034-04-11 Tue | 1 | — | unknown | — | 42.9° 17:40 | 7.52 | 50% | 143.8° |
| 2034-04-12 Wed | 1 | — | unknown | — | 42.9° 17:35 | 7.46 | 40% | 133.6° |
| 2034-04-13 Thu | 1 | — | unknown | — | 42.9° 17:30 | 7.4 | 30% | 122.2° |
| 2034-04-14 Fri | 1 | — | unknown | — | 42.9° 17:25 | 7.35 | 20% | 109.9° |
| 2034-04-15 Sat | 0 | — | unknown | — | 42.9° 17:25 | 7.29 | 12% | 96.9° |
| 2034-04-16 Sun | 0 | — | unknown | — | 42.9° 17:20 | 7.23 | 5% | 83.4° |
| 2034-04-17 Mon | 0 | — | unknown | — | 42.9° 17:15 | 7.17 | 1% | 69.8° |
| 2034-04-18 Tue | 0 | — | unknown | — | 42.9° 17:10 | 7.12 | 0% | 56.2° |
| 2034-04-19 Wed | 0 | — | unknown | — | 42.9° 17:05 | 7.06 | 2% | 43.2° |
| 2034-04-20 Thu | 0 | — | unknown | — | 42.9° 17:05 | 7.0 | 7% | 32.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2034-03-22&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.