← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-05-29 Tue | 0 | — | unknown | — | 79.1° 10:25 | 4.9 | 94% | 114.0° |
| 2029-05-30 Wed | 0 | — | unknown | — | 79.1° 10:20 | 4.86 | 88% | 100.8° |
| 2029-05-31 Thu | 0 | — | unknown | — | 79.1° 10:15 | 4.82 | 80% | 87.9° |
| 2029-06-01 Fri | 1 | — | unknown | — | 79.1° 10:10 | 4.79 | 70% | 75.5° |
| 2029-06-02 Sat | 1 | — | unknown | — | 79.1° 10:10 | 4.75 | 61% | 63.4° |
| 2029-06-03 Sun | 1 | — | unknown | — | 79.1° 10:05 | 4.72 | 51% | 51.8° |
| 2029-06-04 Mon | 1 | — | unknown | — | 79.1° 10:00 | 4.68 | 42% | 40.5° |
| 2029-06-05 Tue | 1 | — | unknown | — | 79.1° 09:55 | 4.65 | 32% | 29.9° |
| 2029-06-06 Wed | 1 | — | unknown | — | 79.1° 09:55 | 4.63 | 24% | 20.6° |
| 2029-06-07 Thu | 2 | — | unknown | — | 79.1° 09:50 | 4.6 | 16% | 15.0° |
| 2029-06-08 Fri | 2 | — | unknown | 04:20–04:30 (marginal, 0.17 h) | 79.1° 09:45 | 4.57 | 10% | 17.4° |
| 2029-06-09 Sat | 3 | — | unknown | 04:15–04:30 (marginal, 0.25 h) | 79.1° 09:40 | 4.55 | 5% | 25.7° |
| 2029-06-10 Sun | 3 | — | unknown | 04:10–04:30 (marginal, 0.33 h) | 79.1° 09:35 | 4.53 | 2% | 36.3° |
| 2029-06-11 Mon | 4 | — | unknown | 04:05–04:30 (marginal, 0.42 h) | 79.1° 09:35 | 4.51 | 0% | 47.8° |
| 2029-06-12 Tue | 4 | — | unknown | 04:00–04:30 (marginal, 0.5 h) | 79.1° 09:30 | 4.49 | 1% | 59.9° |
| 2029-06-13 Wed | 5 | — | unknown | 04:00–04:30 (marginal, 0.5 h) | 79.1° 09:25 | 4.48 | 3% | 72.2° |
| 2029-06-14 Thu | 6 | — | unknown | 03:55–04:30 (marginal, 0.58 h) | 79.1° 09:20 | 4.46 | 8% | 84.9° |
| 2029-06-15 Fri | 7 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.1° 09:15 | 4.45 | 15% | 97.8° |
| 2029-06-16 Sat | 8 | — | unknown | 03:45–04:30 (marginal, 0.75 h) | 79.1° 09:15 | 4.44 | 24% | 110.8° |
| 2029-06-17 Sun | 9 | — | unknown | 03:15–04:30 (marginal, 1.25 h) | 79.1° 09:10 | 4.43 | 34% | 124.0° |
| 2029-06-18 Mon | 10 | — | unknown | 03:10–04:30 (marginal, 1.33 h) | 79.1° 09:05 | 4.43 | 44% | 137.1° |
| 2029-06-19 Tue | 11 | — | unknown | 03:35–03:40 (good, 0.08 h) | 79.1° 09:00 | 4.42 | 56% | 149.8° |
| 2029-06-20 Wed | 13 | — | unknown | 03:30–03:40 (good, 0.17 h) | 79.1° 09:00 | 4.42 | 67% | 160.8° |
| 2029-06-21 Thu | 14 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:55 | 4.42 | 78% | 165.2° |
| 2029-06-22 Fri | 15 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:50 | 4.43 | 87% | 158.1° |
| 2029-06-23 Sat | 15 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:45 | 4.43 | 94% | 146.1° |
| 2029-06-24 Sun | 16 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:40 | 4.44 | 98% | 132.9° |
| 2029-06-25 Mon | 17 | — | unknown | 03:20–03:40 (good, 0.33 h) | 79.1° 08:40 | 4.45 | 100% | 119.5° |
| 2029-06-26 Tue | 15 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:35 | 4.46 | 99% | 106.1° |
| 2029-06-27 Wed | 13 | — | unknown | 03:35–03:40 (good, 0.08 h) | 79.1° 08:30 | 4.47 | 96% | 92.9° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-05-29&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.