← 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. |
|---|---|---|---|---|---|---|---|---|
| 2030-06-24 Mon | 16 | — | unknown | 23:15–23:30 (good, 0.25 h) | 50.2° 19:40 | 4.44 | 29% | 155.9° |
| 2030-06-25 Tue | 14 | — | unknown | 23:15–23:30 (good, 0.25 h) | 50.2° 19:35 | 4.44 | 21% | 144.8° |
| 2030-06-26 Wed | 13 | — | unknown | 23:15–23:25 (good, 0.17 h) | 50.2° 19:30 | 4.46 | 14% | 133.3° |
| 2030-06-27 Thu | 12 | — | unknown | 23:15–23:20 (good, 0.08 h) | 50.2° 19:30 | 4.47 | 8% | 121.8° |
| 2030-06-28 Fri | 10 | — | unknown | 22:20–23:45 (marginal, 1.42 h) | 50.2° 19:25 | 4.48 | 4% | 110.1° |
| 2030-06-29 Sat | 10 | — | unknown | 23:10–23:15 (good, 0.08 h) | 50.2° 19:20 | 4.5 | 1% | 98.4° |
| 2030-06-30 Sun | 9 | — | unknown | 22:20–23:35 (marginal, 1.25 h) | 50.2° 19:15 | 4.52 | 0% | 86.5° |
| 2030-07-01 Mon | 8 | — | unknown | 22:20–23:05 (marginal, 0.75 h) | 50.2° 19:15 | 4.54 | 1% | 74.5° |
| 2030-07-02 Tue | 7 | — | unknown | 22:20–23:00 (marginal, 0.67 h) | 50.2° 19:10 | 4.56 | 4% | 62.4° |
| 2030-07-03 Wed | 6 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.2° 19:05 | 4.58 | 9% | 50.1° |
| 2030-07-04 Thu | 5 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.2° 19:00 | 4.61 | 16% | 37.8° |
| 2030-07-05 Fri | 3 | — | unknown | 22:20–22:40 (marginal, 0.33 h) | 50.2° 18:55 | 4.64 | 24% | 25.5° |
| 2030-07-06 Sat | 3 | — | unknown | 22:20–22:30 (marginal, 0.17 h) | 50.2° 18:55 | 4.67 | 34% | 14.3° |
| 2030-07-07 Sun | 2 | — | unknown | — | 50.2° 18:50 | 4.7 | 44% | 10.1° |
| 2030-07-08 Mon | 1 | — | unknown | — | 50.2° 18:45 | 4.73 | 55% | 19.3° |
| 2030-07-09 Tue | 1 | — | unknown | — | 50.2° 18:40 | 4.77 | 66% | 32.2° |
| 2030-07-10 Wed | 1 | — | unknown | — | 50.2° 18:35 | 4.8 | 77% | 46.1° |
| 2030-07-11 Thu | 1 | — | unknown | — | 50.2° 18:35 | 4.84 | 86% | 60.4° |
| 2030-07-12 Fri | 1 | — | unknown | — | 50.2° 18:30 | 4.88 | 93% | 75.0° |
| 2030-07-13 Sat | 1 | — | unknown | — | 50.2° 18:25 | 4.92 | 98% | 89.6° |
| 2030-07-14 Sun | 1 | — | unknown | — | 50.2° 18:20 | 4.96 | 100% | 104.2° |
| 2030-07-15 Mon | 1 | — | unknown | — | 50.2° 18:20 | 5.0 | 99% | 118.5° |
| 2030-07-16 Tue | 1 | — | unknown | — | 50.2° 18:15 | 5.04 | 95% | 132.5° |
| 2030-07-17 Wed | 1 | — | unknown | — | 50.2° 18:10 | 5.09 | 89% | 145.9° |
| 2030-07-18 Thu | 1 | — | unknown | — | 50.2° 18:05 | 5.13 | 82% | 158.4° |
| 2030-07-19 Fri | 1 | — | unknown | — | 50.2° 18:00 | 5.18 | 73% | 168.4° |
| 2030-07-20 Sat | 1 | — | unknown | — | 50.2° 18:00 | 5.23 | 64% | 168.6° |
| 2030-07-21 Sun | 1 | — | unknown | — | 50.2° 17:55 | 5.27 | 54% | 159.3° |
| 2030-07-22 Mon | 0 | — | unknown | — | 50.2° 17:50 | 5.32 | 44% | 148.1° |
| 2030-07-23 Tue | 0 | — | unknown | — | 50.2° 17:45 | 5.37 | 35% | 136.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2030-06-24&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.