← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-05-21 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° |
| 2033-06-09 Thu | 3 | — | unknown | 04:15–04:30 (marginal, 0.25 h) | 79.1° 09:40 | 4.55 | 91% | 156.2° |
| 2033-06-10 Fri | 3 | — | unknown | 04:15–04:30 (marginal, 0.25 h) | 79.1° 09:35 | 4.53 | 96% | 148.3° |
| 2033-06-11 Sat | 3 | — | unknown | 04:15–04:30 (marginal, 0.25 h) | 79.1° 09:35 | 4.51 | 99% | 138.1° |
| 2033-06-12 Sun | 3 | — | unknown | 04:10–04:30 (marginal, 0.33 h) | 79.1° 09:30 | 4.49 | 100% | 126.7° |
| 2033-06-13 Mon | 4 | — | unknown | 04:10–04:30 (marginal, 0.33 h) | 79.1° 09:25 | 4.48 | 99% | 114.6° |
| 2033-06-14 Tue | 4 | — | unknown | 03:25–03:40 (marginal, 0.25 h) | 79.1° 09:20 | 4.46 | 95% | 102.1° |
| 2033-06-15 Wed | 4 | — | unknown | 03:20–03:40 (marginal, 0.33 h) | 79.1° 09:15 | 4.45 | 90% | 89.3° |
| 2033-06-16 Thu | 4 | — | unknown | 03:20–03:40 (marginal, 0.33 h) | 79.1° 09:15 | 4.44 | 82% | 76.4° |
| 2033-06-17 Fri | 4 | — | unknown | 03:20–03:40 (marginal, 0.33 h) | 79.1° 09:10 | 4.43 | 73% | 63.4° |
| 2033-06-18 Sat | 5 | — | unknown | 03:15–03:40 (marginal, 0.42 h) | 79.1° 09:05 | 4.43 | 62% | 50.6° |
| 2033-06-19 Sun | 6 | — | unknown | 03:05–03:40 (marginal, 0.58 h) | 79.1° 09:00 | 4.42 | 51% | 38.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-05-21&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.