← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-10-25 Sat | 100 | 47 | 47 | 20:00–22:00 (good, 2.0 h) | 89.5° 23:45 | 10.25 | 17% | 123.5° |
| 2025-10-26 Sun | 100 | 5 | 5 | 04:00–04:30 (marginal, 0.5 h) | 89.6° 22:45 | 10.29 | 24% | 113.7° |
| 2025-10-27 Mon | 100 | 65 | 65 | 19:00–01:00 (good, 6.0 h) | 89.7° 22:40 | 10.32 | 33% | 103.5° |
| 2025-10-28 Tue | 100 | 99 | 99 | 18:55–04:45 (good, 9.83 h) | 89.7° 22:35 | 10.36 | 42% | 92.9° |
| 2025-10-29 Wed | 100 | 100 | 100 | 18:55–04:40 (good, 9.75 h) | 89.6° 22:30 | 10.4 | 52% | 82.0° |
| 2025-10-30 Thu | 100 | 52 | 52 | 21:00–02:00 (good, 5.0 h) | 89.5° 22:30 | 10.44 | 63% | 70.9° |
| 2025-10-31 Fri | 96 | 38 | 37 | 00:00–02:30 (good, 2.5 h) | 89.6° 22:25 | 10.47 | 73% | 59.8° |
| 2025-11-01 Sat | 87 | 97 | 84 | 00:00–04:30 (good, 4.5 h) | 89.7° 22:20 | 10.51 | 82% | 48.9° |
| 2025-11-02 Sun | 71 | 85 | 60 | 04:05–04:20 (good, 0.25 h) | 89.7° 22:15 | 10.55 | 90% | 39.0° |
| 2025-11-03 Mon | 38 | 4 | 1 | — | 89.6° 22:10 | 10.58 | 96% | 31.9° |
| 2025-11-04 Tue | 31 | 0 | 0 | — | 89.5° 22:10 | 10.62 | 99% | 30.1° |
| 2025-11-05 Wed | 37 | 0 | 0 | — | 89.7° 22:05 | 10.65 | 100% | 34.9° |
| 2025-11-06 Thu | 56 | 0 | 0 | — | 89.7° 22:00 | 10.69 | 97% | 44.2° |
| 2025-11-07 Fri | 68 | 0 | 0 | — | 89.6° 21:55 | 10.72 | 92% | 55.5° |
| 2025-11-08 Sat | 100 | 0 | 0 | — | 89.5° 21:50 | 10.75 | 84% | 67.7° |
| 2025-11-09 Sun | 100 | 3 | 3 | — | 89.6° 21:50 | 10.78 | 74% | 80.0° |
| 2025-11-10 Mon | 100 | 0 | 0 | — | 89.7° 21:45 | 10.82 | 64% | 92.0° |
| 2025-11-11 Tue | 100 | 95 | 95 | 18:40–03:35 (good, 8.92 h) | 89.7° 21:40 | 10.85 | 53% | 103.7° |
| 2025-11-12 Wed | 100 | 78 | 78 | 20:00–03:40 (good, 7.67 h) | 89.6° 21:35 | 10.88 | 43% | 114.7° |
| 2025-11-13 Thu | 100 | 99 | 99 | 18:40–03:35 (good, 8.92 h) | 89.5° 21:35 | 10.91 | 33% | 125.1° |
| 2025-11-14 Fri | 100 | 100 | 100 | 18:40–03:35 (good, 8.92 h) | 89.6° 21:30 | 10.94 | 24% | 134.5° |
| 2025-11-15 Sat | 100 | 63 | 63 | 18:40–23:00 (good, 4.33 h) | 89.7° 21:25 | 10.97 | 16% | 142.5° |
| 2025-11-16 Sun | 100 | 32 | 32 | 18:40–19:00 (good, 0.33 h) | 89.7° 21:20 | 10.99 | 10% | 148.1° |
| 2025-11-17 Mon | 100 | 0 | 0 | — | 89.6° 21:15 | 11.02 | 5% | 150.1° |
| 2025-11-18 Tue | 100 | 0 | 0 | — | 89.5° 21:15 | 11.05 | 2% | 148.0° |
| 2025-11-19 Wed | 100 | 5 | 5 | 02:00–03:00 (marginal, 1.0 h) | 89.7° 21:10 | 11.08 | 0% | 142.4° |
| 2025-11-20 Thu | 100 | 10 | 10 | 21:00–23:00 (marginal, 2.0 h) | 89.7° 21:05 | 11.1 | 0% | 134.7° |
| 2025-11-21 Fri | 100 | 0 | 0 | — | 89.7° 21:00 | 11.13 | 3% | 125.8° |
| 2025-11-22 Sat | 100 | 20 | 20 | 20:00–21:00 (good, 1.0 h) | 89.5° 20:55 | 11.15 | 6% | 116.1° |
| 2025-11-23 Sun | 100 | 99 | 99 | 18:35–03:00 (good, 8.42 h) | 89.6° 20:55 | 11.17 | 12% | 106.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-10-25&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.