← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-06-17 Wed | 7 | — | unknown | 23:10–00:10 (marginal, 1.0 h) | 50.1° 20:10 | 4.43 | 81% | 30.3° |
| 2043-06-18 Thu | 8 | — | unknown | 23:10–00:05 (marginal, 0.92 h) | 50.1° 20:05 | 4.43 | 88% | 42.0° |
| 2043-06-19 Fri | 8 | — | unknown | 23:10–00:05 (marginal, 0.92 h) | 50.1° 20:00 | 4.42 | 93% | 53.8° |
| 2043-06-20 Sat | 9 | — | unknown | 23:15–00:05 (marginal, 0.83 h) | 50.1° 19:55 | 4.42 | 97% | 65.6° |
| 2043-06-21 Sun | 11 | — | unknown | 23:15–00:10 (marginal, 0.92 h) | 50.1° 19:55 | 4.42 | 99% | 77.6° |
| 2043-06-22 Mon | 12 | — | unknown | 22:20–00:10 (marginal, 1.83 h) | 50.1° 19:50 | 4.42 | 100% | 89.7° |
| 2043-06-23 Tue | 13 | — | unknown | 23:15–23:20 (good, 0.08 h) | 50.1° 19:45 | 4.43 | 98% | 102.0° |
| 2043-06-24 Wed | 13 | — | unknown | 23:15–23:25 (good, 0.17 h) | 50.1° 19:40 | 4.43 | 94% | 114.4° |
| 2043-06-25 Thu | 14 | — | unknown | 23:15–23:30 (good, 0.25 h) | 50.1° 19:40 | 4.44 | 89% | 127.0° |
| 2043-06-26 Fri | 13 | — | unknown | 23:15–23:25 (good, 0.17 h) | 50.1° 19:35 | 4.45 | 82% | 139.8° |
| 2043-06-27 Sat | 12 | — | unknown | 23:15–23:20 (good, 0.08 h) | 50.1° 19:30 | 4.47 | 73% | 152.8° |
| 2043-06-28 Sun | 11 | — | unknown | 22:20–23:45 (marginal, 1.42 h) | 50.1° 19:25 | 4.48 | 63% | 165.7° |
| 2043-06-29 Mon | 10 | — | unknown | 23:10–23:15 (good, 0.08 h) | 50.1° 19:20 | 4.5 | 52% | 175.0° |
| 2043-06-30 Tue | 9 | — | unknown | 22:20–23:40 (marginal, 1.33 h) | 50.1° 19:20 | 4.51 | 41% | 165.0° |
| 2043-07-01 Wed | 8 | — | unknown | 22:20–23:05 (marginal, 0.75 h) | 50.1° 19:15 | 4.53 | 30% | 151.2° |
| 2043-07-02 Thu | 7 | — | unknown | 22:20–23:00 (marginal, 0.67 h) | 50.1° 19:10 | 4.56 | 20% | 136.8° |
| 2043-07-03 Fri | 6 | — | unknown | 22:20–23:00 (marginal, 0.67 h) | 50.1° 19:05 | 4.58 | 11% | 122.2° |
| 2043-07-04 Sat | 5 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.1° 19:00 | 4.61 | 5% | 107.5° |
| 2043-07-05 Sun | 5 | — | unknown | 22:20–22:50 (marginal, 0.5 h) | 50.1° 19:00 | 4.63 | 1% | 92.8° |
| 2043-07-06 Mon | 4 | — | unknown | 22:20–22:45 (marginal, 0.42 h) | 50.1° 18:55 | 4.66 | 0% | 78.2° |
| 2043-07-07 Tue | 3 | — | unknown | 22:15–22:40 (marginal, 0.42 h) | 50.1° 18:50 | 4.69 | 2% | 63.9° |
| 2043-07-08 Wed | 3 | — | unknown | 22:15–22:35 (marginal, 0.33 h) | 50.1° 18:45 | 4.73 | 6% | 49.9° |
| 2043-07-09 Thu | 2 | — | unknown | 22:15–22:30 (marginal, 0.25 h) | 50.1° 18:40 | 4.76 | 13% | 36.4° |
| 2043-07-10 Fri | 2 | — | unknown | 22:15–22:20 (marginal, 0.08 h) | 50.1° 18:40 | 4.8 | 21% | 23.4° |
| 2043-07-11 Sat | 2 | — | unknown | — | 50.1° 18:35 | 4.83 | 30% | 11.3° |
| 2043-07-12 Sun | 1 | — | unknown | — | 50.1° 18:30 | 4.87 | 39% | 5.6° |
| 2043-07-13 Mon | 1 | — | unknown | — | 50.1° 18:25 | 4.91 | 49% | 15.3° |
| 2043-07-14 Tue | 1 | — | unknown | — | 50.1° 18:25 | 4.95 | 58% | 26.9° |
| 2043-07-15 Wed | 1 | — | unknown | — | 50.1° 18:20 | 4.99 | 67% | 38.6° |
| 2043-07-16 Thu | 1 | — | unknown | — | 50.1° 18:15 | 5.04 | 76% | 50.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-06-17&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.