← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-06-18 Mon | 15 | — | unknown | 23:10–23:30 (good, 0.33 h) | 50.2° 20:05 | 4.43 | 44% | 17.3° |
| 2029-06-19 Tue | 12 | — | unknown | 23:10–00:20 (marginal, 1.17 h) | 50.2° 20:00 | 4.42 | 56% | 10.1° |
| 2029-06-20 Wed | 9 | — | unknown | 23:15–00:05 (marginal, 0.83 h) | 50.2° 19:55 | 4.42 | 67% | 17.3° |
| 2029-06-21 Thu | 6 | — | unknown | 23:15–23:55 (marginal, 0.67 h) | 50.2° 19:50 | 4.42 | 78% | 30.1° |
| 2029-06-22 Fri | 6 | — | unknown | 23:15–23:50 (marginal, 0.58 h) | 50.2° 19:45 | 4.43 | 87% | 44.0° |
| 2029-06-23 Sat | 6 | — | unknown | 23:15–23:50 (marginal, 0.58 h) | 50.2° 19:45 | 4.43 | 94% | 58.0° |
| 2029-06-24 Sun | 7 | — | unknown | 23:15–23:50 (marginal, 0.58 h) | 50.2° 19:40 | 4.44 | 98% | 72.1° |
| 2029-06-25 Mon | 8 | — | unknown | 23:15–23:55 (marginal, 0.67 h) | 50.2° 19:35 | 4.45 | 100% | 86.1° |
| 2029-06-26 Tue | 8 | — | unknown | 23:15–23:50 (marginal, 0.58 h) | 50.2° 19:30 | 4.46 | 99% | 99.8° |
| 2029-06-27 Wed | 9 | — | unknown | 22:20–23:10 (marginal, 0.83 h) | 50.2° 19:25 | 4.47 | 96% | 113.2° |
| 2029-06-28 Thu | 10 | — | unknown | 22:20–23:45 (marginal, 1.42 h) | 50.2° 19:25 | 4.49 | 91% | 126.1° |
| 2029-06-29 Fri | 9 | — | unknown | 22:20–23:40 (marginal, 1.33 h) | 50.2° 19:20 | 4.5 | 84% | 138.6° |
| 2029-06-30 Sat | 9 | — | unknown | 22:20–23:35 (marginal, 1.25 h) | 50.2° 19:15 | 4.52 | 76% | 150.6° |
| 2029-07-01 Sun | 7 | — | unknown | 22:20–23:05 (marginal, 0.75 h) | 50.2° 19:10 | 4.54 | 67% | 161.5° |
| 2029-07-02 Mon | 7 | — | unknown | 22:20–23:00 (marginal, 0.67 h) | 50.2° 19:10 | 4.57 | 58% | 169.4° |
| 2029-07-03 Tue | 6 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.2° 19:05 | 4.59 | 48% | 167.0° |
| 2029-07-04 Wed | 5 | — | unknown | 22:20–22:50 (marginal, 0.5 h) | 50.2° 19:00 | 4.62 | 39% | 157.5° |
| 2029-07-05 Thu | 4 | — | unknown | 22:20–22:50 (marginal, 0.5 h) | 50.2° 18:55 | 4.65 | 30% | 146.5° |
| 2029-07-06 Fri | 4 | — | unknown | 22:15–22:45 (marginal, 0.5 h) | 50.2° 18:50 | 4.68 | 21% | 135.0° |
| 2029-07-07 Sat | 3 | — | unknown | 22:15–22:40 (marginal, 0.42 h) | 50.2° 18:50 | 4.71 | 14% | 123.2° |
| 2029-07-08 Sun | 3 | — | unknown | 22:15–22:35 (marginal, 0.33 h) | 50.2° 18:45 | 4.74 | 8% | 111.0° |
| 2029-07-09 Mon | 3 | — | unknown | 22:15–22:30 (marginal, 0.25 h) | 50.2° 18:40 | 4.77 | 3% | 98.6° |
| 2029-07-10 Tue | 2 | — | unknown | 22:15–22:30 (marginal, 0.25 h) | 50.2° 18:35 | 4.81 | 1% | 85.8° |
| 2029-07-11 Wed | 2 | — | unknown | 22:15–22:25 (marginal, 0.17 h) | 50.2° 18:30 | 4.85 | 0% | 72.8° |
| 2029-07-12 Thu | 2 | — | unknown | 22:15–22:20 (marginal, 0.08 h) | 50.2° 18:30 | 4.89 | 2% | 59.6° |
| 2029-07-13 Fri | 2 | — | unknown | — | 50.2° 18:25 | 4.93 | 6% | 46.2° |
| 2029-07-14 Sat | 1 | — | unknown | — | 50.2° 18:20 | 4.97 | 13% | 32.8° |
| 2029-07-15 Sun | 1 | — | unknown | — | 50.2° 18:15 | 5.01 | 21% | 20.0° |
| 2029-07-16 Mon | 1 | — | unknown | — | 50.2° 18:15 | 5.05 | 31% | 10.5° |
| 2029-07-17 Tue | 1 | — | unknown | — | 50.2° 18:10 | 5.1 | 42% | 14.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-06-18&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.