← 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. |
|---|---|---|---|---|---|---|---|---|
| 2045-06-26 Mon | 5 | — | unknown | 23:15–23:40 (marginal, 0.42 h) | 50.1° 19:30 | 4.46 | 94% | 63.5° |
| 2045-06-27 Tue | 6 | — | unknown | 23:15–23:45 (marginal, 0.5 h) | 50.1° 19:30 | 4.47 | 98% | 75.8° |
| 2045-06-28 Wed | 6 | — | unknown | 23:10–23:45 (marginal, 0.58 h) | 50.1° 19:25 | 4.49 | 100% | 88.0° |
| 2045-06-29 Thu | 7 | — | unknown | 23:10–23:40 (marginal, 0.5 h) | 50.1° 19:20 | 4.51 | 100% | 100.0° |
| 2045-06-30 Fri | 7 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.1° 19:15 | 4.53 | 98% | 111.8° |
| 2045-07-01 Sat | 7 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.1° 19:10 | 4.55 | 94% | 123.6° |
| 2045-07-02 Sun | 6 | — | unknown | 22:20–23:00 (marginal, 0.67 h) | 50.1° 19:10 | 4.57 | 88% | 135.2° |
| 2045-07-03 Mon | 6 | — | unknown | 22:20–22:55 (marginal, 0.58 h) | 50.1° 19:05 | 4.59 | 82% | 146.7° |
| 2045-07-04 Tue | 5 | — | unknown | 22:20–22:50 (marginal, 0.5 h) | 50.1° 19:00 | 4.62 | 74% | 158.0° |
| 2045-07-05 Wed | 4 | — | unknown | 22:20–22:50 (marginal, 0.5 h) | 50.1° 18:55 | 4.65 | 65% | 168.2° |
| 2045-07-06 Thu | 4 | — | unknown | 22:15–22:45 (marginal, 0.5 h) | 50.1° 18:50 | 4.68 | 55% | 170.9° |
| 2045-07-07 Fri | 4 | — | unknown | 22:15–22:40 (marginal, 0.42 h) | 50.1° 18:50 | 4.71 | 45% | 161.9° |
| 2045-07-08 Sat | 3 | — | unknown | 22:15–22:35 (marginal, 0.33 h) | 50.1° 18:45 | 4.74 | 35% | 150.0° |
| 2045-07-09 Sun | 3 | — | unknown | 22:15–22:30 (marginal, 0.25 h) | 50.1° 18:40 | 4.78 | 26% | 137.2° |
| 2045-07-10 Mon | 2 | — | unknown | 22:15–22:30 (marginal, 0.25 h) | 50.1° 18:35 | 4.81 | 17% | 123.8° |
| 2045-07-11 Tue | 2 | — | unknown | 22:15–22:25 (marginal, 0.17 h) | 50.1° 18:35 | 4.85 | 9% | 109.9° |
| 2045-07-12 Wed | 2 | — | unknown | 22:15–22:20 (marginal, 0.08 h) | 50.1° 18:30 | 4.89 | 3% | 95.5° |
| 2045-07-13 Thu | 2 | — | unknown | — | 50.1° 18:25 | 4.93 | 0% | 80.8° |
| 2045-07-14 Fri | 2 | — | unknown | 22:10–22:15 (marginal, 0.08 h) | 50.1° 18:20 | 4.97 | 0% | 65.9° |
| 2045-07-15 Sat | 1 | — | unknown | — | 50.1° 18:15 | 5.02 | 3% | 50.9° |
| 2045-07-16 Sun | 1 | — | unknown | — | 50.1° 18:15 | 5.06 | 9% | 36.3° |
| 2045-07-17 Mon | 1 | — | unknown | — | 50.1° 18:10 | 5.1 | 17% | 22.2° |
| 2045-07-18 Tue | 1 | — | unknown | — | 50.1° 18:05 | 5.15 | 27% | 10.4° |
| 2045-07-19 Wed | 1 | — | unknown | — | 50.1° 18:00 | 5.2 | 38% | 11.4° |
| 2045-07-20 Thu | 0 | — | unknown | — | 50.1° 17:55 | 5.24 | 48% | 23.0° |
| 2045-07-21 Fri | 0 | — | unknown | — | 50.1° 17:55 | 5.29 | 59% | 35.6° |
| 2045-07-22 Sat | 0 | — | unknown | — | 50.1° 17:50 | 5.34 | 69% | 48.2° |
| 2045-07-23 Sun | 0 | — | unknown | — | 50.1° 17:45 | 5.39 | 78% | 60.6° |
| 2045-07-24 Mon | 0 | — | unknown | — | 50.1° 17:40 | 5.44 | 86% | 72.9° |
| 2045-07-25 Tue | 0 | — | unknown | — | 50.1° 17:40 | 5.49 | 92% | 85.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2045-06-26&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.