← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-10-21 Tue | 100 | 22 | 22 | 23:00–00:00 (marginal, 1.0 h) | 71.1° 19:20 | 10.08 | 0% | 96.6° |
| 2025-10-22 Wed | 100 | 63 | 63 | 20:05–22:00 (good, 1.92 h) | 71.1° 19:15 | 10.13 | 2% | 88.2° |
| 2025-10-23 Thu | 100 | 40 | 40 | 20:05–21:25 (good, 1.33 h) | 71.1° 19:15 | 10.17 | 5% | 80.0° |
| 2025-10-24 Fri | 100 | 56 | 56 | 20:00–21:00 (good, 1.0 h) | 71.1° 19:10 | 10.21 | 10% | 71.9° |
| 2025-10-25 Sat | 100 | 63 | 63 | 20:00–22:00 (good, 2.0 h) | 71.1° 19:05 | 10.25 | 17% | 64.3° |
| 2025-10-26 Sun | 99 | 0 | 0 | — | 71.1° 18:00 | 10.29 | 24% | 57.4° |
| 2025-10-27 Mon | 91 | 93 | 85 | 19:00–23:05 (good, 4.08 h) | 71.1° 18:00 | 10.32 | 33% | 51.6° |
| 2025-10-28 Tue | 76 | 98 | 75 | 18:55–23:00 (good, 4.08 h) | 71.1° 17:55 | 10.36 | 42% | 47.3° |
| 2025-10-29 Wed | 60 | 100 | 60 | 18:55–22:35 (good, 3.67 h) | 71.1° 17:50 | 10.4 | 52% | 45.3° |
| 2025-10-30 Thu | 49 | 54 | 26 | 20:00–23:20 (marginal, 3.33 h) | 71.1° 17:45 | 10.44 | 63% | 46.0° |
| 2025-10-31 Fri | 40 | 1 | 1 | — | 71.1° 17:40 | 10.47 | 73% | 49.6° |
| 2025-11-01 Sat | 36 | 92 | 33 | 18:50–22:55 (marginal, 4.08 h) | 71.1° 17:40 | 10.51 | 82% | 55.7° |
| 2025-11-02 Sun | 35 | 74 | 26 | 18:50–19:00 (good, 0.17 h) | 71.1° 17:35 | 10.55 | 90% | 63.8° |
| 2025-11-03 Mon | 38 | 10 | 4 | 18:50–19:00 (marginal, 0.17 h) | 71.1° 17:30 | 10.58 | 96% | 73.3° |
| 2025-11-04 Tue | 44 | 0 | 0 | — | 71.1° 17:25 | 10.62 | 99% | 83.7° |
| 2025-11-05 Wed | 54 | 0 | 0 | — | 71.1° 17:20 | 10.65 | 100% | 94.5° |
| 2025-11-06 Thu | 65 | 0 | 0 | — | 71.1° 17:20 | 10.69 | 97% | 105.1° |
| 2025-11-07 Fri | 76 | 0 | 0 | — | 71.1° 17:15 | 10.72 | 92% | 114.9° |
| 2025-11-08 Sat | 88 | 0 | 0 | — | 71.1° 17:10 | 10.75 | 84% | 123.5° |
| 2025-11-09 Sun | 89 | 7 | 6 | — | 71.1° 17:05 | 10.78 | 74% | 130.1° |
| 2025-11-10 Mon | 89 | 0 | 0 | — | 71.1° 17:05 | 10.82 | 64% | 134.0° |
| 2025-11-11 Tue | 89 | 89 | 79 | 18:40–22:05 (good, 3.42 h) | 71.1° 17:00 | 10.85 | 53% | 134.8° |
| 2025-11-12 Wed | 88 | 45 | 40 | 21:00–22:00 (good, 1.0 h) | 71.1° 16:55 | 10.88 | 43% | 132.6° |
| 2025-11-13 Thu | 86 | 99 | 85 | 18:40–21:55 (good, 3.25 h) | 71.1° 16:50 | 10.91 | 33% | 128.1° |
| 2025-11-14 Fri | 85 | 100 | 85 | 18:40–21:55 (good, 3.25 h) | 71.1° 16:45 | 10.94 | 24% | 121.9° |
| 2025-11-15 Sat | 83 | 92 | 77 | 18:40–21:50 (good, 3.17 h) | 71.1° 16:45 | 10.97 | 16% | 114.7° |
| 2025-11-16 Sun | 82 | 55 | 45 | 18:40–19:00 (good, 0.33 h) | 71.1° 16:40 | 10.99 | 10% | 106.9° |
| 2025-11-17 Mon | 80 | 0 | 0 | — | 71.1° 16:35 | 11.02 | 5% | 98.7° |
| 2025-11-18 Tue | 78 | 0 | 0 | — | 71.1° 16:30 | 11.05 | 2% | 90.4° |
| 2025-11-19 Wed | 77 | 4 | 3 | — | 71.1° 16:25 | 11.08 | 0% | 82.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-10-21&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.