← 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. |
|---|---|---|---|---|---|---|---|---|
| 2047-07-07 Sun | 0 | — | unknown | — | 72.6° 10:05 | 4.7 | 100% | 127.4° |
| 2047-07-08 Mon | 0 | — | unknown | — | 72.6° 10:00 | 4.73 | 97% | 113.6° |
| 2047-07-09 Tue | 1 | — | unknown | — | 72.6° 10:00 | 4.76 | 92% | 100.2° |
| 2047-07-10 Wed | 1 | — | unknown | — | 72.6° 09:55 | 4.8 | 86% | 87.1° |
| 2047-07-11 Thu | 1 | — | unknown | — | 72.6° 09:50 | 4.83 | 78% | 74.5° |
| 2047-07-12 Fri | 1 | — | unknown | — | 72.6° 09:45 | 4.87 | 70% | 62.1° |
| 2047-07-13 Sat | 1 | — | unknown | — | 72.6° 09:40 | 4.91 | 60% | 50.0° |
| 2047-07-14 Sun | 1 | — | unknown | — | 72.6° 09:40 | 4.95 | 51% | 38.0° |
| 2047-07-15 Mon | 2 | — | unknown | — | 72.6° 09:35 | 5.0 | 41% | 26.2° |
| 2047-07-16 Tue | 2 | — | unknown | 03:55–04:00 (marginal, 0.08 h) | 72.6° 09:30 | 5.04 | 32% | 14.3° |
| 2047-07-17 Wed | 3 | — | unknown | 04:35–04:50 (marginal, 0.25 h) | 72.6° 09:25 | 5.08 | 24% | 2.4° |
| 2047-07-18 Thu | 5 | — | unknown | 04:25–04:50 (marginal, 0.42 h) | 72.6° 09:20 | 5.13 | 16% | 9.7° |
| 2047-07-19 Fri | 7 | — | unknown | 04:15–04:55 (marginal, 0.67 h) | 72.6° 09:20 | 5.17 | 9% | 21.9° |
| 2047-07-20 Sat | 8 | — | unknown | 04:10–04:55 (marginal, 0.75 h) | 72.6° 09:15 | 5.22 | 4% | 34.5° |
| 2047-07-21 Sun | 10 | — | unknown | 04:05–04:10 (good, 0.08 h) | 72.6° 09:10 | 5.27 | 1% | 47.2° |
| 2047-07-22 Mon | 11 | — | unknown | 04:00–04:10 (good, 0.17 h) | 72.6° 09:05 | 5.32 | 0% | 60.3° |
| 2047-07-23 Tue | 13 | — | unknown | 03:55–04:10 (good, 0.25 h) | 72.6° 09:05 | 5.37 | 1% | 73.6° |
| 2047-07-24 Wed | 16 | — | unknown | 03:55–04:15 (good, 0.33 h) | 72.6° 09:00 | 5.42 | 5% | 87.2° |
| 2047-07-25 Thu | 18 | — | unknown | 03:50–04:15 (good, 0.42 h) | 72.6° 08:55 | 5.47 | 10% | 101.0° |
| 2047-07-26 Fri | 19 | — | unknown | 03:45–04:15 (good, 0.5 h) | 72.6° 08:50 | 5.52 | 18% | 114.9° |
| 2047-07-27 Sat | 22 | — | unknown | 03:40–04:20 (good, 0.67 h) | 72.6° 08:45 | 5.57 | 28% | 129.0° |
| 2047-07-28 Sun | 24 | — | unknown | 03:35–04:20 (good, 0.75 h) | 72.6° 08:45 | 5.63 | 39% | 143.1° |
| 2047-07-29 Mon | 25 | — | unknown | 03:35–04:20 (good, 0.75 h) | 72.6° 08:40 | 5.68 | 50% | 157.3° |
| 2047-07-30 Tue | 27 | — | unknown | 03:30–04:20 (good, 0.83 h) | 72.6° 08:35 | 5.73 | 62% | 171.5° |
| 2047-07-31 Wed | 28 | — | unknown | 03:25–04:25 (good, 1.0 h) | 72.6° 08:30 | 5.79 | 72% | 174.3° |
| 2047-08-01 Thu | 30 | — | unknown | 03:20–04:25 (good, 1.08 h) | 72.6° 08:25 | 5.84 | 82% | 160.2° |
| 2047-08-02 Fri | 32 | — | unknown | 03:15–04:25 (good, 1.17 h) | 72.6° 08:25 | 5.9 | 90% | 146.2° |
| 2047-08-03 Sat | 33 | — | unknown | 03:20–04:30 (good, 1.17 h) | 72.6° 08:20 | 5.95 | 96% | 132.3° |
| 2047-08-04 Sun | 29 | — | unknown | 03:20–04:30 (good, 1.17 h) | 72.6° 08:15 | 6.01 | 99% | 118.6° |
| 2047-08-05 Mon | 25 | — | unknown | 03:25–04:30 (good, 1.08 h) | 72.6° 08:10 | 6.07 | 100% | 105.1° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2047-07-07&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.