← 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. |
|---|---|---|---|---|---|---|---|---|
| 2046-06-27 Wed | 12 | — | unknown | 23:15–23:20 (good, 0.08 h) | 50.1° 19:30 | 4.47 | 36% | 160.4° |
| 2046-06-28 Thu | 10 | — | unknown | 22:20–23:45 (marginal, 1.42 h) | 50.1° 19:25 | 4.48 | 27% | 149.2° |
| 2046-06-29 Fri | 10 | — | unknown | 22:20–23:40 (marginal, 1.33 h) | 50.1° 19:20 | 4.5 | 19% | 137.3° |
| 2046-06-30 Sat | 9 | — | unknown | 22:20–23:35 (marginal, 1.25 h) | 50.1° 19:15 | 4.52 | 11% | 124.9° |
| 2046-07-01 Sun | 8 | — | unknown | 22:20–23:05 (marginal, 0.75 h) | 50.1° 19:15 | 4.54 | 6% | 112.1° |
| 2046-07-02 Mon | 7 | — | unknown | 22:20–23:00 (marginal, 0.67 h) | 50.1° 19:10 | 4.56 | 2% | 98.9° |
| 2046-07-03 Tue | 6 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.1° 19:05 | 4.59 | 0% | 85.3° |
| 2046-07-04 Wed | 5 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.1° 19:00 | 4.61 | 1% | 71.5° |
| 2046-07-05 Thu | 4 | — | unknown | 22:20–22:50 (marginal, 0.5 h) | 50.1° 18:55 | 4.64 | 4% | 57.4° |
| 2046-07-06 Fri | 4 | — | unknown | 22:20–22:45 (marginal, 0.42 h) | 50.1° 18:55 | 4.67 | 11% | 43.4° |
| 2046-07-07 Sat | 3 | — | unknown | 22:15–22:35 (marginal, 0.33 h) | 50.1° 18:50 | 4.7 | 19% | 29.5° |
| 2046-07-08 Sun | 2 | — | unknown | 22:15–22:25 (marginal, 0.17 h) | 50.1° 18:45 | 4.74 | 29% | 16.6° |
| 2046-07-09 Mon | 2 | — | unknown | — | 50.1° 18:40 | 4.77 | 40% | 9.4° |
| 2046-07-10 Tue | 1 | — | unknown | — | 50.1° 18:40 | 4.81 | 51% | 17.4° |
| 2046-07-11 Wed | 1 | — | unknown | — | 50.1° 18:35 | 4.84 | 62% | 30.1° |
| 2046-07-12 Thu | 1 | — | unknown | — | 50.1° 18:30 | 4.88 | 73% | 43.4° |
| 2046-07-13 Fri | 1 | — | unknown | — | 50.1° 18:25 | 4.92 | 82% | 56.7° |
| 2046-07-14 Sat | 1 | — | unknown | — | 50.1° 18:20 | 4.96 | 90% | 69.9° |
| 2046-07-15 Sun | 1 | — | unknown | — | 50.1° 18:20 | 5.01 | 95% | 83.0° |
| 2046-07-16 Mon | 1 | — | unknown | — | 50.1° 18:15 | 5.05 | 99% | 95.9° |
| 2046-07-17 Tue | 1 | — | unknown | — | 50.1° 18:10 | 5.09 | 100% | 108.5° |
| 2046-07-18 Wed | 1 | — | unknown | — | 50.1° 18:05 | 5.14 | 99% | 120.8° |
| 2046-07-19 Thu | 1 | — | unknown | — | 50.1° 18:00 | 5.19 | 96% | 132.9° |
| 2046-07-20 Fri | 1 | — | unknown | — | 50.1° 18:00 | 5.23 | 92% | 144.7° |
| 2046-07-21 Sat | 1 | — | unknown | — | 50.1° 17:55 | 5.28 | 86% | 156.0° |
| 2046-07-22 Sun | 0 | — | unknown | — | 50.1° 17:50 | 5.33 | 79% | 166.1° |
| 2046-07-23 Mon | 0 | — | unknown | — | 50.1° 17:45 | 5.38 | 70% | 170.5° |
| 2046-07-24 Tue | 0 | — | unknown | — | 50.1° 17:45 | 5.43 | 62% | 163.7° |
| 2046-07-25 Wed | 0 | — | unknown | — | 50.1° 17:40 | 5.48 | 52% | 153.1° |
| 2046-07-26 Thu | 0 | — | unknown | — | 50.1° 17:35 | 5.53 | 42% | 141.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2046-06-27&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.