← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-06-23 Tue | 0 | — | unknown | — | 72.6° 11:00 | 4.43 | 98% | 132.4° |
| 2043-06-24 Wed | 0 | — | unknown | — | 72.5° 10:55 | 4.43 | 94% | 119.9° |
| 2043-06-25 Thu | 0 | — | unknown | — | 72.5° 10:55 | 4.44 | 89% | 107.2° |
| 2043-06-26 Fri | 0 | — | unknown | — | 72.6° 10:50 | 4.45 | 82% | 94.3° |
| 2043-06-27 Sat | 0 | — | unknown | — | 72.6° 10:45 | 4.47 | 73% | 81.2° |
| 2043-06-28 Sun | 0 | — | unknown | — | 72.6° 10:40 | 4.48 | 63% | 67.8° |
| 2043-06-29 Mon | 0 | — | unknown | — | 72.5° 10:35 | 4.5 | 52% | 54.2° |
| 2043-06-30 Tue | 0 | — | unknown | — | 72.5° 10:35 | 4.51 | 41% | 40.2° |
| 2043-07-01 Wed | 0 | — | unknown | — | 72.6° 10:30 | 4.53 | 30% | 26.0° |
| 2043-07-02 Thu | 0 | — | unknown | — | 72.6° 10:25 | 4.56 | 20% | 11.5° |
| 2043-07-03 Fri | 0 | — | unknown | — | 72.6° 10:20 | 4.58 | 11% | 3.2° |
| 2043-07-04 Sat | 0 | — | unknown | — | 72.5° 10:15 | 4.61 | 5% | 18.0° |
| 2043-07-05 Sun | 0 | — | unknown | — | 72.5° 10:15 | 4.63 | 1% | 32.8° |
| 2043-07-06 Mon | 0 | — | unknown | — | 72.6° 10:10 | 4.66 | 0% | 47.5° |
| 2043-07-07 Tue | 1 | — | unknown | — | 72.6° 10:05 | 4.69 | 2% | 61.8° |
| 2043-07-08 Wed | 1 | — | unknown | — | 72.6° 10:00 | 4.73 | 6% | 75.9° |
| 2043-07-09 Thu | 1 | — | unknown | — | 72.5° 10:00 | 4.76 | 13% | 89.5° |
| 2043-07-10 Fri | 1 | — | unknown | — | 72.6° 09:55 | 4.8 | 21% | 102.7° |
| 2043-07-11 Sat | 1 | — | unknown | — | 72.6° 09:50 | 4.83 | 30% | 115.5° |
| 2043-07-12 Sun | 2 | — | unknown | 04:40–04:45 (marginal, 0.08 h) | 72.6° 09:45 | 4.87 | 39% | 127.9° |
| 2043-07-13 Mon | 2 | — | unknown | 04:35–04:45 (marginal, 0.17 h) | 72.5° 09:40 | 4.91 | 49% | 140.1° |
| 2043-07-14 Tue | 2 | — | unknown | 04:30–04:45 (marginal, 0.25 h) | 72.5° 09:40 | 4.95 | 58% | 152.1° |
| 2043-07-15 Wed | 3 | — | unknown | 04:30–04:50 (marginal, 0.33 h) | 72.6° 09:35 | 4.99 | 67% | 163.9° |
| 2043-07-16 Thu | 4 | — | unknown | 04:25–04:50 (marginal, 0.42 h) | 72.6° 09:30 | 5.04 | 76% | 175.8° |
| 2043-07-17 Fri | 4 | — | unknown | 04:20–04:50 (marginal, 0.5 h) | 72.6° 09:25 | 5.08 | 84% | 172.3° |
| 2043-07-18 Sat | 6 | — | unknown | 04:15–04:50 (marginal, 0.58 h) | 72.5° 09:20 | 5.13 | 90% | 160.3° |
| 2043-07-19 Sun | 7 | — | unknown | 04:10–04:55 (marginal, 0.75 h) | 72.5° 09:20 | 5.17 | 95% | 148.2° |
| 2043-07-20 Mon | 7 | — | unknown | 04:15–04:55 (marginal, 0.67 h) | 72.6° 09:15 | 5.22 | 98% | 135.9° |
| 2043-07-21 Tue | 9 | — | unknown | 03:35–04:10 (marginal, 0.58 h) | 72.6° 09:10 | 5.27 | 100% | 123.3° |
| 2043-07-22 Wed | 8 | — | unknown | 03:35–04:10 (marginal, 0.58 h) | 72.6° 09:05 | 5.32 | 99% | 110.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-06-23&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.