← 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. |
|---|---|---|---|---|---|---|---|---|
| 2047-05-31 Fri | 1 | — | unknown | — | 79.2° 10:20 | 4.84 | 44% | 119.5° |
| 2047-06-01 Sat | 1 | — | unknown | — | 79.2° 10:15 | 4.8 | 55% | 132.5° |
| 2047-06-02 Sun | 1 | — | unknown | — | 79.2° 10:10 | 4.76 | 66% | 145.5° |
| 2047-06-03 Mon | 1 | — | unknown | — | 79.2° 10:05 | 4.73 | 77% | 157.7° |
| 2047-06-04 Tue | 1 | — | unknown | — | 79.2° 10:05 | 4.7 | 86% | 165.4° |
| 2047-06-05 Wed | 2 | — | unknown | 04:30–04:35 (marginal, 0.08 h) | 79.2° 10:00 | 4.67 | 93% | 161.2° |
| 2047-06-06 Thu | 2 | — | unknown | — | 79.2° 09:55 | 4.64 | 98% | 149.5° |
| 2047-06-07 Fri | 2 | — | unknown | — | 79.2° 09:50 | 4.61 | 100% | 136.0° |
| 2047-06-08 Sat | 2 | — | unknown | — | 79.2° 09:45 | 4.58 | 99% | 122.1° |
| 2047-06-09 Sun | 2 | — | unknown | — | 79.2° 09:45 | 4.56 | 95% | 108.3° |
| 2047-06-10 Mon | 2 | — | unknown | — | 79.2° 09:40 | 4.54 | 90% | 94.8° |
| 2047-06-11 Tue | 2 | — | unknown | — | 79.2° 09:35 | 4.52 | 82% | 81.7° |
| 2047-06-12 Wed | 2 | — | unknown | — | 79.2° 09:30 | 4.5 | 73% | 69.0° |
| 2047-06-13 Thu | 2 | — | unknown | 03:35–03:40 (marginal, 0.08 h) | 79.2° 09:30 | 4.48 | 64% | 56.9° |
| 2047-06-14 Fri | 3 | — | unknown | 03:30–03:40 (marginal, 0.17 h) | 79.2° 09:25 | 4.47 | 54% | 45.2° |
| 2047-06-15 Sat | 4 | — | unknown | 03:25–03:40 (marginal, 0.25 h) | 79.2° 09:20 | 4.45 | 44% | 34.0° |
| 2047-06-16 Sun | 5 | — | unknown | 03:20–03:40 (marginal, 0.33 h) | 79.2° 09:15 | 4.44 | 35% | 23.9° |
| 2047-06-17 Mon | 6 | — | unknown | 03:15–03:40 (marginal, 0.42 h) | 79.2° 09:10 | 4.44 | 26% | 16.1° |
| 2047-06-18 Tue | 8 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.2° 09:10 | 4.43 | 18% | 15.0° |
| 2047-06-19 Wed | 9 | — | unknown | 03:10–04:30 (marginal, 1.33 h) | 79.2° 09:05 | 4.42 | 12% | 21.6° |
| 2047-06-20 Thu | 11 | — | unknown | 03:35–03:40 (good, 0.08 h) | 79.2° 09:00 | 4.42 | 6% | 31.4° |
| 2047-06-21 Fri | 13 | — | unknown | 03:30–03:40 (good, 0.17 h) | 79.2° 08:55 | 4.42 | 2% | 42.5° |
| 2047-06-22 Sat | 15 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.2° 08:50 | 4.42 | 0% | 54.1° |
| 2047-06-23 Sun | 16 | — | unknown | 03:20–03:40 (good, 0.33 h) | 79.2° 08:50 | 4.43 | 0% | 66.1° |
| 2047-06-24 Mon | 17 | — | unknown | 03:15–03:40 (good, 0.42 h) | 79.2° 08:45 | 4.44 | 2% | 78.4° |
| 2047-06-25 Tue | 20 | — | unknown | 03:15–03:40 (good, 0.42 h) | 79.2° 08:40 | 4.44 | 6% | 91.0° |
| 2047-06-26 Wed | 22 | — | unknown | 03:10–03:40 (good, 0.5 h) | 79.2° 08:35 | 4.45 | 13% | 103.7° |
| 2047-06-27 Thu | 23 | — | unknown | 03:05–03:40 (good, 0.58 h) | 79.2° 08:35 | 4.47 | 21% | 116.6° |
| 2047-06-28 Fri | 25 | — | unknown | 03:00–03:40 (good, 0.67 h) | 79.2° 08:30 | 4.48 | 30% | 129.6° |
| 2047-06-29 Sat | 25 | — | unknown | 02:55–03:40 (good, 0.75 h) | 79.2° 08:25 | 4.5 | 41% | 142.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2047-05-31&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.