← 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. |
|---|---|---|---|---|---|---|---|---|
| 2032-04-09 Fri | 0 | — | unknown | — | 89.5° 12:55 | 7.61 | 0% | 32.7° |
| 2032-04-10 Sat | 0 | — | unknown | — | 89.7° 12:50 | 7.55 | 1% | 33.0° |
| 2032-04-11 Sun | 0 | — | unknown | — | 89.8° 12:45 | 7.49 | 4% | 38.1° |
| 2032-04-12 Mon | 0 | — | unknown | — | 89.7° 12:40 | 7.43 | 10% | 46.1° |
| 2032-04-13 Tue | 0 | — | unknown | — | 89.5° 12:35 | 7.38 | 16% | 55.5° |
| 2032-04-14 Wed | 0 | — | unknown | — | 89.6° 12:35 | 7.32 | 25% | 65.5° |
| 2032-04-15 Thu | 0 | — | unknown | — | 89.7° 12:30 | 7.26 | 34% | 75.7° |
| 2032-04-16 Fri | 0 | — | unknown | — | 89.7° 12:25 | 7.2 | 43% | 85.9° |
| 2032-04-17 Sat | 0 | — | unknown | — | 89.7° 12:20 | 7.15 | 53% | 96.0° |
| 2032-04-18 Sun | 0 | — | unknown | — | 89.5° 12:15 | 7.09 | 62% | 105.9° |
| 2032-04-19 Mon | 0 | — | unknown | — | 89.6° 12:15 | 7.03 | 71% | 115.7° |
| 2032-04-20 Tue | 0 | — | unknown | — | 89.7° 12:10 | 6.97 | 79% | 125.0° |
| 2032-04-21 Wed | 0 | — | unknown | — | 89.7° 12:05 | 6.91 | 86% | 133.7° |
| 2032-04-22 Thu | 0 | — | unknown | — | 89.6° 12:00 | 6.86 | 92% | 141.2° |
| 2032-04-23 Fri | 0 | — | unknown | — | 89.7° 11:55 | 6.8 | 97% | 146.4° |
| 2032-04-24 Sat | 0 | — | unknown | — | 89.8° 11:50 | 6.74 | 100% | 147.8° |
| 2032-04-25 Sun | 0 | — | unknown | — | 89.7° 11:45 | 6.68 | 100% | 144.8° |
| 2032-04-26 Mon | 1 | — | unknown | — | 89.6° 11:40 | 6.62 | 98% | 138.0° |
| 2032-04-27 Tue | 1 | — | unknown | — | 89.6° 11:40 | 6.56 | 94% | 128.9° |
| 2032-04-28 Wed | 1 | — | unknown | — | 89.7° 11:35 | 6.51 | 88% | 118.4° |
| 2032-04-29 Thu | 1 | — | unknown | — | 89.7° 11:30 | 6.45 | 79% | 107.1° |
| 2032-04-30 Fri | 1 | — | unknown | — | 89.7° 11:25 | 6.39 | 69% | 95.4° |
| 2032-05-01 Sat | 1 | — | unknown | — | 89.5° 11:20 | 6.33 | 58% | 83.4° |
| 2032-05-02 Sun | 1 | — | unknown | — | 89.6° 11:20 | 6.27 | 47% | 71.6° |
| 2032-05-03 Mon | 1 | — | unknown | — | 89.7° 11:15 | 6.22 | 36% | 60.1° |
| 2032-05-04 Tue | 1 | — | unknown | — | 89.7° 11:10 | 6.16 | 25% | 49.3° |
| 2032-05-05 Wed | 1 | — | unknown | — | 89.6° 11:05 | 6.1 | 16% | 40.2° |
| 2032-05-06 Thu | 2 | — | unknown | 05:00–05:05 (marginal, 0.08 h) | 89.5° 11:05 | 6.04 | 8% | 33.9° |
| 2032-05-07 Fri | 2 | — | unknown | 04:55–05:00 (marginal, 0.08 h) | 89.7° 11:00 | 5.99 | 3% | 32.2° |
| 2032-05-08 Sat | 2 | — | unknown | 04:50–05:00 (marginal, 0.17 h) | 89.8° 10:55 | 5.93 | 0% | 35.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2032-04-09&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.