← 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. |
|---|---|---|---|---|---|---|---|---|
| 2032-04-17 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° |
| 2032-05-09 Sun | 2 | — | unknown | 04:45–05:00 (marginal, 0.25 h) | 89.7° 10:50 | 5.88 | 0% | 42.7° |
| 2032-05-10 Mon | 3 | — | unknown | 04:45–05:00 (marginal, 0.25 h) | 89.6° 10:45 | 5.82 | 2% | 51.8° |
| 2032-05-11 Tue | 4 | — | unknown | 04:40–04:55 (marginal, 0.25 h) | 89.6° 10:45 | 5.76 | 6% | 61.7° |
| 2032-05-12 Wed | 4 | — | unknown | 04:35–04:55 (marginal, 0.33 h) | 89.7° 10:40 | 5.71 | 12% | 72.0° |
| 2032-05-13 Thu | 4 | — | unknown | 04:30–04:55 (marginal, 0.42 h) | 89.8° 10:35 | 5.66 | 19% | 82.3° |
| 2032-05-14 Fri | 5 | — | unknown | 04:25–04:50 (marginal, 0.42 h) | 89.7° 10:30 | 5.6 | 27% | 92.5° |
| 2032-05-15 Sat | 5 | — | unknown | 04:25–04:50 (marginal, 0.42 h) | 89.5° 10:25 | 5.55 | 36% | 102.6° |
| 2032-05-16 Sun | 6 | — | unknown | 04:20–04:50 (marginal, 0.5 h) | 89.6° 10:25 | 5.5 | 46% | 112.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2032-04-17&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.