← 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. |
|---|---|---|---|---|---|---|---|---|
| 2034-05-31 Wed | 1 | — | unknown | — | 79.1° 10:15 | 4.83 | 98% | 146.8° |
| 2034-06-01 Thu | 1 | — | unknown | — | 79.1° 10:15 | 4.79 | 100% | 137.5° |
| 2034-06-02 Fri | 1 | — | unknown | — | 79.1° 10:10 | 4.76 | 99% | 127.1° |
| 2034-06-03 Sat | 1 | — | unknown | — | 79.1° 10:05 | 4.72 | 97% | 116.2° |
| 2034-06-04 Sun | 1 | — | unknown | — | 79.1° 10:00 | 4.69 | 93% | 104.9° |
| 2034-06-05 Mon | 1 | — | unknown | — | 79.1° 10:00 | 4.66 | 87% | 93.3° |
| 2034-06-06 Tue | 1 | — | unknown | — | 79.1° 09:55 | 4.63 | 79% | 81.6° |
| 2034-06-07 Wed | 1 | — | unknown | — | 79.1° 09:50 | 4.61 | 70% | 69.6° |
| 2034-06-08 Thu | 1 | — | unknown | — | 79.1° 09:45 | 4.58 | 60% | 57.6° |
| 2034-06-09 Fri | 1 | — | unknown | — | 79.1° 09:40 | 4.56 | 49% | 45.8° |
| 2034-06-10 Sat | 2 | — | unknown | — | 79.1° 09:40 | 4.53 | 38% | 34.6° |
| 2034-06-11 Sun | 2 | — | unknown | 04:20–04:30 (marginal, 0.17 h) | 79.1° 09:35 | 4.51 | 27% | 25.5° |
| 2034-06-12 Mon | 4 | — | unknown | 04:10–04:30 (marginal, 0.33 h) | 79.1° 09:30 | 4.5 | 17% | 22.2° |
| 2034-06-13 Tue | 5 | — | unknown | 04:00–04:30 (marginal, 0.5 h) | 79.1° 09:25 | 4.48 | 9% | 27.3° |
| 2034-06-14 Wed | 6 | — | unknown | 03:55–04:30 (marginal, 0.58 h) | 79.1° 09:20 | 4.47 | 4% | 37.7° |
| 2034-06-15 Thu | 7 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.1° 09:20 | 4.45 | 1% | 50.2° |
| 2034-06-16 Fri | 7 | — | unknown | 03:45–04:30 (marginal, 0.75 h) | 79.1° 09:15 | 4.44 | 0% | 63.4° |
| 2034-06-17 Sat | 8 | — | unknown | 03:45–04:30 (marginal, 0.75 h) | 79.1° 09:10 | 4.43 | 3% | 76.7° |
| 2034-06-18 Sun | 10 | — | unknown | 03:10–04:30 (marginal, 1.33 h) | 79.1° 09:05 | 4.43 | 9% | 89.8° |
| 2034-06-19 Mon | 11 | — | unknown | 03:35–03:40 (good, 0.08 h) | 79.1° 09:05 | 4.42 | 16% | 102.5° |
| 2034-06-20 Tue | 12 | — | unknown | 03:30–03:40 (good, 0.17 h) | 79.1° 09:00 | 4.42 | 24% | 114.7° |
| 2034-06-21 Wed | 13 | — | unknown | 03:30–03:40 (good, 0.17 h) | 79.1° 08:55 | 4.42 | 34% | 126.3° |
| 2034-06-22 Thu | 15 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:50 | 4.43 | 43% | 137.1° |
| 2034-06-23 Fri | 17 | — | unknown | 03:20–03:40 (good, 0.33 h) | 79.1° 08:45 | 4.43 | 53% | 146.7° |
| 2034-06-24 Sat | 18 | — | unknown | 03:15–03:40 (good, 0.42 h) | 79.1° 08:45 | 4.44 | 63% | 154.2° |
| 2034-06-25 Sun | 20 | — | unknown | 03:10–03:40 (good, 0.5 h) | 79.1° 08:40 | 4.45 | 72% | 157.7° |
| 2034-06-26 Mon | 22 | — | unknown | 03:10–03:40 (good, 0.5 h) | 79.1° 08:35 | 4.46 | 80% | 155.6° |
| 2034-06-27 Tue | 22 | — | unknown | 03:10–03:40 (good, 0.5 h) | 79.1° 08:30 | 4.47 | 87% | 149.1° |
| 2034-06-28 Wed | 21 | — | unknown | 03:10–03:40 (good, 0.5 h) | 79.1° 08:25 | 4.48 | 92% | 140.1° |
| 2034-06-29 Thu | 22 | — | unknown | 03:05–03:40 (good, 0.58 h) | 79.1° 08:25 | 4.5 | 97% | 130.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2034-05-31&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.