← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-10-18 Sat | 100 | 1 | 1 | — | 79.1° 01:05 | 9.96 | 6% | 139.9° |
| 2025-10-19 Sun | 100 | 0 | 0 | — | 79.1° 01:00 | 10.0 | 2% | 150.7° |
| 2025-10-20 Mon | 100 | 16 | 16 | 20:05–21:00 (good, 0.92 h) | 79.1° 01:00 | 10.04 | 0% | 159.7° |
| 2025-10-21 Tue | 100 | 10 | 10 | 23:00–00:00 (marginal, 1.0 h) | 79.1° 00:55 | 10.08 | 0% | 164.3° |
| 2025-10-22 Wed | 100 | 29 | 29 | 22:20–00:00 (good, 1.67 h) | 79.1° 00:50 | 10.13 | 2% | 161.0° |
| 2025-10-23 Thu | 100 | 16 | 16 | 20:05–21:00 (good, 0.92 h) | 79.1° 00:45 | 10.17 | 5% | 152.7° |
| 2025-10-24 Fri | 100 | 69 | 69 | 01:00–06:00 (good, 5.0 h) | 79.1° 00:40 | 10.21 | 10% | 142.6° |
| 2025-10-25 Sat | 100 | 45 | 45 | 20:00–22:00 (good, 2.0 h) | 79.1° 00:40 | 10.25 | 17% | 131.7° |
| 2025-10-26 Sun | 100 | 5 | 5 | 04:00–04:45 (marginal, 0.75 h) | 79.1° 23:35 | 10.29 | 24% | 120.5° |
| 2025-10-27 Mon | 100 | 64 | 64 | 19:30–01:00 (good, 5.5 h) | 79.1° 23:30 | 10.32 | 33% | 109.0° |
| 2025-10-28 Tue | 100 | 99 | 99 | 18:55–05:00 (good, 10.08 h) | 79.1° 23:25 | 10.36 | 42% | 97.2° |
| 2025-10-29 Wed | 100 | 100 | 100 | 18:55–04:55 (good, 10.0 h) | 79.1° 23:25 | 10.4 | 52% | 85.1° |
| 2025-10-30 Thu | 100 | 51 | 51 | 21:00–02:00 (good, 5.0 h) | 79.1° 23:20 | 10.44 | 63% | 72.7° |
| 2025-10-31 Fri | 100 | 40 | 40 | 00:00–02:55 (good, 2.92 h) | 79.1° 23:15 | 10.47 | 73% | 59.9° |
| 2025-11-01 Sat | 90 | 97 | 87 | 00:15–04:45 (good, 4.5 h) | 79.1° 23:10 | 10.51 | 82% | 46.9° |
| 2025-11-02 Sun | 80 | 86 | 69 | 04:05–04:35 (good, 0.5 h) | 79.1° 23:05 | 10.55 | 90% | 33.9° |
| 2025-11-03 Mon | 38 | 3 | 1 | — | 79.1° 23:05 | 10.58 | 96% | 22.0° |
| 2025-11-04 Tue | 28 | 0 | 0 | — | 79.1° 23:00 | 10.62 | 99% | 15.7° |
| 2025-11-05 Wed | 29 | 0 | 0 | — | 79.1° 22:55 | 10.65 | 100% | 21.3° |
| 2025-11-06 Thu | 40 | 0 | 0 | — | 79.1° 22:50 | 10.69 | 97% | 33.5° |
| 2025-11-07 Fri | 59 | 0 | 0 | — | 79.1° 22:45 | 10.72 | 92% | 47.1° |
| 2025-11-08 Sat | 93 | 0 | 0 | — | 79.1° 22:45 | 10.75 | 84% | 61.1° |
| 2025-11-09 Sun | 100 | 3 | 3 | — | 79.1° 22:40 | 10.78 | 74% | 74.8° |
| 2025-11-10 Mon | 100 | 0 | 0 | — | 79.1° 22:35 | 10.82 | 64% | 88.2° |
| 2025-11-11 Tue | 100 | 96 | 96 | 18:40–03:50 (good, 9.17 h) | 79.1° 22:30 | 10.85 | 53% | 101.2° |
| 2025-11-12 Wed | 100 | 79 | 79 | 20:00–03:55 (good, 7.92 h) | 79.1° 22:25 | 10.88 | 43% | 113.7° |
| 2025-11-13 Thu | 100 | 99 | 99 | 18:40–03:50 (good, 9.17 h) | 79.1° 22:25 | 10.91 | 33% | 125.8° |
| 2025-11-14 Fri | 100 | 100 | 100 | 18:40–03:50 (good, 9.17 h) | 79.1° 22:20 | 10.94 | 24% | 137.4° |
| 2025-11-15 Sat | 100 | 62 | 62 | 18:40–23:00 (good, 4.33 h) | 79.1° 22:15 | 10.97 | 16% | 148.2° |
| 2025-11-16 Sun | 100 | 30 | 30 | 18:40–19:00 (good, 0.33 h) | 79.1° 22:10 | 10.99 | 10% | 157.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-10-18&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.