← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-06-27 Mon | 0 | — | unknown | — | 72.6° 10:45 | 4.47 | 2% | 50.6° |
| 2033-06-28 Tue | 0 | — | unknown | — | 72.6° 10:40 | 4.49 | 5% | 63.4° |
| 2033-06-29 Wed | 0 | — | unknown | — | 72.6° 10:35 | 4.5 | 10% | 76.0° |
| 2033-06-30 Thu | 0 | — | unknown | — | 72.6° 10:30 | 4.52 | 17% | 88.3° |
| 2033-07-01 Fri | 0 | — | unknown | — | 72.6° 10:25 | 4.54 | 25% | 100.3° |
| 2033-07-02 Sat | 0 | — | unknown | — | 72.6° 10:25 | 4.57 | 33% | 112.2° |
| 2033-07-03 Sun | 0 | — | unknown | — | 72.6° 10:20 | 4.59 | 43% | 124.0° |
| 2033-07-04 Mon | 0 | — | unknown | — | 72.6° 10:15 | 4.62 | 52% | 135.6° |
| 2033-07-05 Tue | 0 | — | unknown | — | 72.6° 10:10 | 4.65 | 62% | 147.3° |
| 2033-07-06 Wed | 0 | — | unknown | — | 72.6° 10:05 | 4.68 | 71% | 158.8° |
| 2033-07-07 Thu | 1 | — | unknown | — | 72.6° 10:05 | 4.71 | 79% | 169.3° |
| 2033-07-08 Fri | 1 | — | unknown | — | 72.6° 10:00 | 4.74 | 87% | 171.0° |
| 2033-07-09 Sat | 1 | — | unknown | — | 72.6° 09:55 | 4.78 | 93% | 160.7° |
| 2033-07-10 Sun | 1 | — | unknown | — | 72.6° 09:50 | 4.81 | 97% | 148.2° |
| 2033-07-11 Mon | 1 | — | unknown | — | 72.6° 09:50 | 4.85 | 100% | 134.9° |
| 2033-07-12 Tue | 2 | — | unknown | — | 72.6° 09:45 | 4.89 | 99% | 121.3° |
| 2033-07-13 Wed | 1 | — | unknown | — | 72.6° 09:40 | 4.93 | 97% | 107.3° |
| 2033-07-14 Thu | 1 | — | unknown | — | 72.6° 09:35 | 4.97 | 92% | 93.2° |
| 2033-07-15 Fri | 1 | — | unknown | — | 72.6° 09:30 | 5.01 | 84% | 79.0° |
| 2033-07-16 Sat | 2 | — | unknown | — | 72.6° 09:30 | 5.06 | 75% | 64.7° |
| 2033-07-17 Sun | 2 | — | unknown | 04:00–04:05 (marginal, 0.08 h) | 72.6° 09:25 | 5.1 | 64% | 50.6° |
| 2033-07-18 Mon | 3 | — | unknown | 03:50–04:05 (marginal, 0.25 h) | 72.6° 09:20 | 5.15 | 53% | 36.6° |
| 2033-07-19 Tue | 4 | — | unknown | 03:45–04:05 (marginal, 0.33 h) | 72.6° 09:15 | 5.19 | 41% | 23.1° |
| 2033-07-20 Wed | 6 | — | unknown | 03:40–04:05 (marginal, 0.42 h) | 72.6° 09:10 | 5.24 | 31% | 11.0° |
| 2033-07-21 Thu | 9 | — | unknown | 03:35–04:55 (marginal, 1.33 h) | 72.6° 09:10 | 5.29 | 21% | 9.6° |
| 2033-07-22 Fri | 11 | — | unknown | 04:05–04:10 (good, 0.08 h) | 72.6° 09:05 | 5.34 | 13% | 20.8° |
| 2033-07-23 Sat | 14 | — | unknown | 03:55–04:10 (good, 0.25 h) | 72.6° 09:00 | 5.39 | 6% | 33.6° |
| 2033-07-24 Sun | 17 | — | unknown | 03:50–04:15 (good, 0.42 h) | 72.6° 08:55 | 5.44 | 2% | 46.5° |
| 2033-07-25 Mon | 19 | — | unknown | 03:45–04:15 (good, 0.5 h) | 72.6° 08:55 | 5.49 | 0% | 59.3° |
| 2033-07-26 Tue | 20 | — | unknown | 03:45–04:15 (good, 0.5 h) | 72.6° 08:50 | 5.54 | 0% | 71.9° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-06-27&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.