← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-03-20 Tue | 23 | — | unknown | 20:10–21:10 (good, 1.0 h) | 72.5° 16:15 | 8.71 | 27% | 3.8° |
| 2029-03-21 Wed | 18 | — | unknown | 20:10–20:55 (good, 0.75 h) | 72.5° 16:10 | 8.66 | 36% | 16.0° |
| 2029-03-22 Thu | 13 | — | unknown | 20:10–21:40 (marginal, 1.5 h) | 72.5° 16:10 | 8.6 | 46% | 28.5° |
| 2029-03-23 Fri | 10 | — | unknown | 20:15–21:30 (marginal, 1.25 h) | 72.5° 16:05 | 8.55 | 56% | 41.3° |
| 2029-03-24 Sat | 9 | — | unknown | 20:15–21:25 (marginal, 1.17 h) | 72.5° 16:00 | 8.5 | 67% | 54.6° |
| 2029-03-25 Sun | 9 | — | unknown | 21:15–22:20 (marginal, 1.08 h) | 72.5° 16:55 | 8.45 | 77% | 68.4° |
| 2029-03-26 Mon | 10 | — | unknown | 21:15–22:25 (marginal, 1.17 h) | 72.5° 16:50 | 8.39 | 86% | 82.6° |
| 2029-03-27 Tue | 11 | — | unknown | 21:20–21:25 (good, 0.08 h) | 72.5° 16:50 | 8.34 | 93% | 97.3° |
| 2029-03-28 Wed | 13 | — | unknown | 21:20–21:40 (good, 0.33 h) | 72.5° 16:45 | 8.28 | 98% | 112.3° |
| 2029-03-29 Thu | 15 | — | unknown | 21:20–21:40 (good, 0.33 h) | 72.5° 16:40 | 8.23 | 100% | 127.5° |
| 2029-03-30 Fri | 14 | — | unknown | 21:20–21:40 (good, 0.33 h) | 72.5° 16:35 | 8.18 | 99% | 142.8° |
| 2029-03-31 Sat | 13 | — | unknown | 21:25–21:45 (good, 0.33 h) | 72.5° 16:30 | 8.12 | 95% | 158.0° |
| 2029-04-01 Sun | 12 | — | unknown | 21:25–21:40 (good, 0.25 h) | 72.5° 16:30 | 8.07 | 88% | 172.8° |
| 2029-04-02 Mon | 11 | — | unknown | 21:25–21:35 (good, 0.17 h) | 72.5° 16:25 | 8.01 | 80% | 172.6° |
| 2029-04-03 Tue | 8 | — | unknown | 20:55–22:00 (marginal, 1.08 h) | 72.5° 16:20 | 7.96 | 70% | 158.6° |
| 2029-04-04 Wed | 7 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 72.5° 16:15 | 7.9 | 59% | 145.0° |
| 2029-04-05 Thu | 6 | — | unknown | 20:55–21:25 (marginal, 0.5 h) | 72.5° 16:15 | 7.85 | 49% | 131.9° |
| 2029-04-06 Fri | 5 | — | unknown | 20:55–21:20 (marginal, 0.42 h) | 72.5° 16:10 | 7.79 | 39% | 119.1° |
| 2029-04-07 Sat | 3 | — | unknown | 21:00–21:15 (marginal, 0.25 h) | 72.5° 16:05 | 7.73 | 29% | 106.7° |
| 2029-04-08 Sun | 3 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 72.5° 16:00 | 7.68 | 21% | 94.5° |
| 2029-04-09 Mon | 2 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 72.5° 15:55 | 7.62 | 14% | 82.5° |
| 2029-04-10 Tue | 1 | — | unknown | 21:00–21:05 (marginal, 0.08 h) | 72.5° 15:55 | 7.56 | 8% | 70.6° |
| 2029-04-11 Wed | 1 | — | unknown | — | 72.5° 15:50 | 7.51 | 4% | 58.7° |
| 2029-04-12 Thu | 1 | — | unknown | — | 72.5° 15:45 | 7.45 | 1% | 46.9° |
| 2029-04-13 Fri | 1 | — | unknown | — | 72.5° 15:40 | 7.39 | 0% | 35.1° |
| 2029-04-14 Sat | 1 | — | unknown | — | 72.5° 15:35 | 7.33 | 1% | 23.2° |
| 2029-04-15 Sun | 0 | — | unknown | — | 72.5° 15:35 | 7.28 | 4% | 11.3° |
| 2029-04-16 Mon | 0 | — | unknown | — | 72.5° 15:30 | 7.22 | 8% | 1.3° |
| 2029-04-17 Tue | 0 | — | unknown | — | 72.5° 15:25 | 7.16 | 14% | 12.9° |
| 2029-04-18 Wed | 0 | — | unknown | — | 72.5° 15:20 | 7.1 | 22% | 25.3° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-03-20&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.