← 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. |
|---|---|---|---|---|---|---|---|---|
| 2032-05-17 Mon | 0 | — | unknown | — | 79.1° 11:10 | 5.44 | 55% | 119.9° |
| 2032-05-18 Tue | 0 | — | unknown | — | 79.1° 11:05 | 5.39 | 64% | 130.8° |
| 2032-05-19 Wed | 0 | — | unknown | — | 79.1° 11:05 | 5.34 | 73% | 141.5° |
| 2032-05-20 Thu | 0 | — | unknown | — | 79.1° 11:00 | 5.29 | 82% | 151.5° |
| 2032-05-21 Fri | 0 | — | unknown | — | 79.1° 10:55 | 5.24 | 89% | 159.2° |
| 2032-05-22 Sat | 0 | — | unknown | — | 79.1° 10:50 | 5.2 | 94% | 160.9° |
| 2032-05-23 Sun | 0 | — | unknown | — | 79.1° 10:45 | 5.15 | 98% | 154.9° |
| 2032-05-24 Mon | 0 | — | unknown | — | 79.1° 10:45 | 5.1 | 100% | 144.6° |
| 2032-05-25 Tue | 0 | — | unknown | — | 79.1° 10:40 | 5.06 | 99% | 132.5° |
| 2032-05-26 Wed | 0 | — | unknown | — | 79.1° 10:35 | 5.01 | 96% | 119.5° |
| 2032-05-27 Thu | 0 | — | unknown | — | 79.1° 10:30 | 4.97 | 90% | 106.1° |
| 2032-05-28 Fri | 0 | — | unknown | — | 79.1° 10:25 | 4.93 | 82% | 92.5° |
| 2032-05-29 Sat | 0 | — | unknown | — | 79.1° 10:25 | 4.89 | 72% | 78.9° |
| 2032-05-30 Sun | 0 | — | unknown | — | 79.1° 10:20 | 4.85 | 61% | 65.4° |
| 2032-05-31 Mon | 0 | — | unknown | — | 79.1° 10:15 | 4.81 | 49% | 52.3° |
| 2032-06-01 Tue | 1 | — | unknown | — | 79.1° 10:10 | 4.78 | 38% | 39.8° |
| 2032-06-02 Wed | 1 | — | unknown | — | 79.1° 10:10 | 4.74 | 28% | 28.5° |
| 2032-06-03 Thu | 1 | — | unknown | — | 79.1° 10:05 | 4.71 | 18% | 20.4° |
| 2032-06-04 Fri | 1 | — | unknown | — | 79.1° 10:00 | 4.68 | 11% | 19.5° |
| 2032-06-05 Sat | 2 | — | unknown | 04:30–04:35 (marginal, 0.08 h) | 79.1° 09:55 | 4.65 | 5% | 26.3° |
| 2032-06-06 Sun | 2 | — | unknown | 04:25–04:30 (marginal, 0.08 h) | 79.1° 09:50 | 4.62 | 1% | 36.5° |
| 2032-06-07 Mon | 2 | — | unknown | 04:20–04:30 (marginal, 0.17 h) | 79.1° 09:50 | 4.59 | 0% | 47.8° |
| 2032-06-08 Tue | 2 | — | unknown | 04:15–04:30 (marginal, 0.25 h) | 79.1° 09:45 | 4.57 | 1% | 59.4° |
| 2032-06-09 Wed | 3 | — | unknown | 04:15–04:30 (marginal, 0.25 h) | 79.1° 09:40 | 4.54 | 4% | 71.0° |
| 2032-06-10 Thu | 3 | — | unknown | 04:10–04:30 (marginal, 0.33 h) | 79.1° 09:35 | 4.52 | 8% | 82.5° |
| 2032-06-11 Fri | 4 | — | unknown | 04:05–04:30 (marginal, 0.42 h) | 79.1° 09:30 | 4.5 | 14% | 93.9° |
| 2032-06-12 Sat | 5 | — | unknown | 04:00–04:30 (marginal, 0.5 h) | 79.1° 09:30 | 4.49 | 22% | 105.2° |
| 2032-06-13 Sun | 5 | — | unknown | 03:55–04:30 (marginal, 0.58 h) | 79.1° 09:25 | 4.47 | 30% | 116.3° |
| 2032-06-14 Mon | 6 | — | unknown | 03:55–04:30 (marginal, 0.58 h) | 79.1° 09:20 | 4.46 | 39% | 127.2° |
| 2032-06-15 Tue | 7 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.1° 09:15 | 4.45 | 48% | 137.9° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2032-05-17&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.