← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-10-12 Sun | 100 | 41 | 41 | 01:00–02:55 (good, 1.92 h) | 87.3° 20:55 | 9.7 | 59% | 101.2° |
| 2025-10-13 Mon | 100 | 8 | 8 | — | 87.3° 20:50 | 9.74 | 48% | 107.9° |
| 2025-10-14 Tue | 100 | 0 | 0 | — | 87.3° 20:45 | 9.79 | 38% | 113.5° |
| 2025-10-15 Wed | 100 | 12 | 12 | 23:00–00:00 (good, 1.0 h) | 87.3° 20:45 | 9.83 | 28% | 117.9° |
| 2025-10-16 Thu | 100 | 0 | 0 | — | 87.3° 20:40 | 9.87 | 19% | 120.9° |
| 2025-10-17 Fri | 100 | 0 | 0 | — | 87.3° 20:35 | 9.92 | 12% | 122.1° |
| 2025-10-18 Sat | 100 | 0 | 0 | — | 87.3° 20:30 | 9.96 | 6% | 121.7° |
| 2025-10-19 Sun | 100 | 0 | 0 | — | 87.3° 20:25 | 10.0 | 2% | 119.6° |
| 2025-10-20 Mon | 100 | 28 | 28 | 20:05–21:00 (good, 0.92 h) | 87.3° 20:25 | 10.04 | 0% | 116.3° |
| 2025-10-21 Tue | 100 | 16 | 16 | 23:00–00:00 (marginal, 1.0 h) | 87.3° 20:20 | 10.08 | 0% | 111.8° |
| 2025-10-22 Wed | 100 | 45 | 45 | 20:05–00:00 (good, 3.92 h) | 87.3° 20:15 | 10.13 | 2% | 106.6° |
| 2025-10-23 Thu | 100 | 27 | 27 | 20:05–22:00 (good, 1.92 h) | 87.3° 20:10 | 10.17 | 5% | 100.8° |
| 2025-10-24 Fri | 100 | 61 | 61 | 01:00–02:25 (good, 1.42 h) | 87.3° 20:05 | 10.21 | 10% | 94.6° |
| 2025-10-25 Sat | 100 | 62 | 62 | 20:00–22:00 (good, 2.0 h) | 87.3° 20:05 | 10.25 | 17% | 88.3° |
| 2025-10-26 Sun | 100 | 0 | 0 | — | 87.3° 19:00 | 10.29 | 24% | 82.0° |
| 2025-10-27 Mon | 100 | 87 | 87 | 19:00–01:00 (good, 6.0 h) | 87.3° 18:55 | 10.32 | 33% | 75.9° |
| 2025-10-28 Tue | 97 | 99 | 96 | 18:55–01:10 (good, 6.25 h) | 87.3° 18:50 | 10.36 | 42% | 70.2° |
| 2025-10-29 Wed | 88 | 100 | 88 | 18:55–01:05 (good, 6.17 h) | 87.3° 18:50 | 10.4 | 52% | 65.2° |
| 2025-10-30 Thu | 80 | 69 | 55 | 21:00–01:00 (good, 4.0 h) | 87.3° 18:45 | 10.44 | 63% | 61.1° |
| 2025-10-31 Fri | 66 | 25 | 16 | 00:00–01:35 (marginal, 1.58 h) | 87.3° 18:40 | 10.47 | 73% | 58.5° |
| 2025-11-01 Sat | 58 | 95 | 55 | 18:50–01:20 (marginal, 6.5 h) | 87.3° 18:35 | 10.51 | 82% | 57.8° |
| 2025-11-02 Sun | 50 | 76 | 38 | 18:50–21:00 (marginal, 2.17 h) | 87.3° 18:30 | 10.55 | 90% | 59.2° |
| 2025-11-03 Mon | 48 | 6 | 3 | 18:50–19:00 (marginal, 0.17 h) | 87.3° 18:30 | 10.58 | 96% | 62.8° |
| 2025-11-04 Tue | 51 | 0 | 0 | — | 87.3° 18:25 | 10.62 | 99% | 68.4° |
| 2025-11-05 Wed | 61 | 0 | 0 | — | 87.3° 18:20 | 10.65 | 100% | 75.3° |
| 2025-11-06 Thu | 75 | 0 | 0 | — | 87.3° 18:15 | 10.69 | 97% | 83.0° |
| 2025-11-07 Fri | 82 | 0 | 0 | — | 87.3° 18:10 | 10.72 | 92% | 91.1° |
| 2025-11-08 Sat | 100 | 0 | 0 | — | 87.3° 18:10 | 10.75 | 84% | 98.9° |
| 2025-11-09 Sun | 100 | 5 | 5 | — | 87.3° 18:05 | 10.78 | 74% | 106.1° |
| 2025-11-10 Mon | 100 | 0 | 0 | — | 87.3° 18:00 | 10.82 | 64% | 112.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-10-12&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.