← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-05-10 Tue | 0 | — | unknown | — | 79.1° 11:40 | 5.83 | 89% | 151.7° |
| 2033-05-11 Wed | 0 | — | unknown | — | 79.1° 11:35 | 5.78 | 94% | 158.1° |
| 2033-05-12 Thu | 0 | — | unknown | — | 79.1° 11:30 | 5.72 | 98% | 159.2° |
| 2033-05-13 Fri | 0 | — | unknown | — | 79.1° 11:25 | 5.67 | 100% | 154.1° |
| 2033-05-14 Sat | 0 | — | unknown | — | 79.1° 11:25 | 5.62 | 100% | 145.3° |
| 2033-05-15 Sun | 0 | — | unknown | — | 79.1° 11:20 | 5.56 | 98% | 134.7° |
| 2033-05-16 Mon | 0 | — | unknown | — | 79.1° 11:15 | 5.51 | 94% | 123.2° |
| 2033-05-17 Tue | 0 | — | unknown | — | 79.1° 11:10 | 5.46 | 87% | 111.2° |
| 2033-05-18 Wed | 0 | — | unknown | — | 79.1° 11:10 | 5.41 | 80% | 98.8° |
| 2033-05-19 Thu | 0 | — | unknown | — | 79.1° 11:05 | 5.35 | 70% | 86.2° |
| 2033-05-20 Fri | 0 | — | unknown | — | 79.1° 11:00 | 5.3 | 60% | 73.4° |
| 2033-05-21 Sat | 0 | — | unknown | — | 79.1° 10:55 | 5.26 | 48% | 60.5° |
| 2033-05-22 Sun | 0 | — | unknown | — | 79.1° 10:50 | 5.21 | 37% | 47.7° |
| 2033-05-23 Mon | 0 | — | unknown | — | 79.1° 10:50 | 5.16 | 26% | 35.6° |
| 2033-05-24 Tue | 0 | — | unknown | — | 79.1° 10:45 | 5.11 | 16% | 25.3° |
| 2033-05-25 Wed | 0 | — | unknown | — | 79.1° 10:40 | 5.07 | 9% | 20.4° |
| 2033-05-26 Thu | 0 | — | unknown | — | 79.1° 10:35 | 5.02 | 3% | 24.5° |
| 2033-05-27 Fri | 0 | — | unknown | — | 79.1° 10:30 | 4.98 | 0% | 34.4° |
| 2033-05-28 Sat | 1 | — | unknown | — | 79.1° 10:30 | 4.94 | 0% | 46.3° |
| 2033-05-29 Sun | 0 | — | unknown | — | 79.1° 10:25 | 4.9 | 3% | 58.7° |
| 2033-05-30 Mon | 1 | — | unknown | — | 79.1° 10:20 | 4.86 | 8% | 71.2° |
| 2033-05-31 Tue | 1 | — | unknown | — | 79.1° 10:15 | 4.82 | 14% | 83.5° |
| 2033-06-01 Wed | 1 | — | unknown | — | 79.1° 10:10 | 4.79 | 22% | 95.5° |
| 2033-06-02 Thu | 1 | — | unknown | — | 79.1° 10:10 | 4.75 | 31% | 107.1° |
| 2033-06-03 Fri | 1 | — | unknown | — | 79.1° 10:05 | 4.72 | 40% | 118.3° |
| 2033-06-04 Sat | 1 | — | unknown | — | 79.1° 10:00 | 4.68 | 50% | 129.2° |
| 2033-06-05 Sun | 2 | — | unknown | 04:30–04:35 (marginal, 0.08 h) | 79.1° 09:55 | 4.65 | 59% | 139.6° |
| 2033-06-06 Mon | 2 | — | unknown | 04:25–04:30 (marginal, 0.08 h) | 79.1° 09:55 | 4.63 | 68% | 149.0° |
| 2033-06-07 Tue | 2 | — | unknown | 04:20–04:30 (marginal, 0.17 h) | 79.1° 09:50 | 4.6 | 76% | 156.4° |
| 2033-06-08 Wed | 2 | — | unknown | 04:20–04:30 (marginal, 0.17 h) | 79.1° 09:45 | 4.57 | 84% | 159.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-05-10&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.