← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-04-03 Tue | 0 | — | unknown | — | 79.1° 14:10 | 7.96 | 70% | 130.0° |
| 2029-04-04 Wed | 0 | — | unknown | — | 79.1° 14:05 | 7.9 | 59% | 117.0° |
| 2029-04-05 Thu | 0 | — | unknown | — | 79.1° 14:00 | 7.85 | 49% | 104.4° |
| 2029-04-06 Fri | 0 | — | unknown | — | 79.1° 13:55 | 7.79 | 39% | 92.1° |
| 2029-04-07 Sat | 0 | — | unknown | — | 79.1° 13:55 | 7.73 | 29% | 80.1° |
| 2029-04-08 Sun | 0 | — | unknown | — | 79.1° 13:50 | 7.68 | 21% | 68.3° |
| 2029-04-09 Mon | 0 | — | unknown | — | 79.1° 13:45 | 7.62 | 14% | 56.8° |
| 2029-04-10 Tue | 0 | — | unknown | — | 79.1° 13:40 | 7.56 | 8% | 45.5° |
| 2029-04-11 Wed | 0 | — | unknown | — | 79.1° 13:35 | 7.51 | 4% | 34.7° |
| 2029-04-12 Thu | 0 | — | unknown | — | 79.1° 13:35 | 7.45 | 1% | 24.6° |
| 2029-04-13 Fri | 0 | — | unknown | — | 79.1° 13:30 | 7.39 | 0% | 16.9° |
| 2029-04-14 Sat | 0 | — | unknown | — | 79.1° 13:25 | 7.33 | 1% | 15.3° |
| 2029-04-15 Sun | 0 | — | unknown | — | 79.1° 13:20 | 7.28 | 4% | 21.5° |
| 2029-04-16 Mon | 0 | — | unknown | — | 79.1° 13:15 | 7.22 | 8% | 31.2° |
| 2029-04-17 Tue | 0 | — | unknown | — | 79.1° 13:15 | 7.16 | 14% | 42.1° |
| 2029-04-18 Wed | 0 | — | unknown | — | 79.1° 13:10 | 7.1 | 22% | 53.7° |
| 2029-04-19 Thu | 0 | — | unknown | — | 79.1° 13:05 | 7.05 | 31% | 65.7° |
| 2029-04-20 Fri | 0 | — | unknown | — | 79.1° 13:00 | 6.99 | 40% | 78.1° |
| 2029-04-21 Sat | 0 | — | unknown | — | 79.1° 13:00 | 6.93 | 51% | 90.8° |
| 2029-04-22 Sun | 0 | — | unknown | — | 79.1° 12:55 | 6.87 | 62% | 104.0° |
| 2029-04-23 Mon | 0 | — | unknown | — | 79.1° 12:50 | 6.81 | 73% | 117.5° |
| 2029-04-24 Tue | 0 | — | unknown | — | 79.1° 12:45 | 6.75 | 82% | 131.2° |
| 2029-04-25 Wed | 0 | — | unknown | — | 79.1° 12:40 | 6.7 | 90% | 144.8° |
| 2029-04-26 Thu | 0 | — | unknown | — | 79.1° 12:40 | 6.64 | 96% | 157.4° |
| 2029-04-27 Fri | 0 | — | unknown | — | 79.1° 12:35 | 6.58 | 99% | 165.0° |
| 2029-04-28 Sat | 0 | — | unknown | — | 79.1° 12:30 | 6.52 | 100% | 160.3° |
| 2029-04-29 Sun | 0 | — | unknown | — | 79.1° 12:25 | 6.46 | 97% | 148.5° |
| 2029-04-30 Mon | 0 | — | unknown | — | 79.1° 12:20 | 6.41 | 91% | 135.2° |
| 2029-05-01 Tue | 0 | — | unknown | — | 79.1° 12:20 | 6.35 | 84% | 121.8° |
| 2029-05-02 Wed | 0 | — | unknown | — | 79.1° 12:15 | 6.29 | 75% | 108.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-04-03&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.