← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-10-17 Fri | 100 | 0 | 0 | — | 72.5° 03:20 | 9.92 | 12% | 104.8° |
| 2025-10-18 Sat | 100 | 2 | 2 | 06:00–06:10 (marginal, 0.17 h) | 72.5° 03:20 | 9.96 | 6% | 117.2° |
| 2025-10-19 Sun | 100 | 0 | 0 | — | 72.5° 03:15 | 10.0 | 2% | 129.4° |
| 2025-10-20 Mon | 100 | 4 | 4 | — | 72.5° 03:10 | 10.04 | 0% | 141.5° |
| 2025-10-21 Tue | 100 | 6 | 6 | 23:00–00:00 (marginal, 1.0 h) | 72.5° 03:05 | 10.08 | 0% | 153.5° |
| 2025-10-22 Wed | 100 | 18 | 18 | 23:00–00:00 (good, 1.0 h) | 72.5° 03:00 | 10.13 | 2% | 165.4° |
| 2025-10-23 Thu | 100 | 3 | 3 | 21:40–22:00 (marginal, 0.33 h) | 72.5° 03:00 | 10.17 | 5% | 177.1° |
| 2025-10-24 Fri | 100 | 68 | 68 | 01:00–06:00 (good, 5.0 h) | 72.5° 02:55 | 10.21 | 10% | 171.0° |
| 2025-10-25 Sat | 100 | 33 | 33 | 00:00–01:00 (good, 1.0 h) | 72.5° 02:50 | 10.25 | 17% | 159.2° |
| 2025-10-26 Sun | 100 | 7 | 7 | 04:00–05:00 (marginal, 1.0 h) | 72.5° 01:45 | 10.29 | 24% | 147.3° |
| 2025-10-27 Mon | 100 | 59 | 59 | 20:40–01:00 (good, 4.33 h) | 72.5° 01:45 | 10.32 | 33% | 135.2° |
| 2025-10-28 Tue | 100 | 99 | 99 | 20:45–05:20 (good, 8.58 h) | 72.5° 01:40 | 10.36 | 42% | 122.9° |
| 2025-10-29 Wed | 100 | 100 | 100 | 20:35–05:20 (good, 8.75 h) | 72.5° 01:35 | 10.4 | 52% | 110.4° |
| 2025-10-30 Thu | 100 | 52 | 52 | 21:00–02:00 (good, 5.0 h) | 72.5° 01:30 | 10.44 | 63% | 97.5° |
| 2025-10-31 Fri | 100 | 48 | 48 | 00:00–03:00 (good, 3.0 h) | 72.5° 01:25 | 10.47 | 73% | 84.1° |
| 2025-11-01 Sat | 100 | 99 | 99 | 22:50–05:25 (good, 6.58 h) | 72.5° 01:25 | 10.51 | 82% | 70.2° |
| 2025-11-02 Sun | 94 | 85 | 80 | 01:50–05:25 (good, 3.58 h) | 72.5° 01:20 | 10.55 | 90% | 55.9° |
| 2025-11-03 Mon | 85 | 0 | 0 | — | 72.5° 01:15 | 10.58 | 96% | 41.1° |
| 2025-11-04 Tue | 32 | 0 | 0 | — | 72.5° 01:10 | 10.62 | 99% | 26.1° |
| 2025-11-05 Wed | 24 | 0 | 0 | — | 72.5° 01:05 | 10.65 | 100% | 10.8° |
| 2025-11-06 Thu | 24 | 0 | 0 | — | 72.5° 01:05 | 10.69 | 97% | 4.5° |
| 2025-11-07 Fri | 35 | 0 | 0 | — | 72.5° 01:00 | 10.72 | 92% | 19.6° |
| 2025-11-08 Sat | 51 | 0 | 0 | — | 72.5° 00:55 | 10.75 | 84% | 34.4° |
| 2025-11-09 Sun | 83 | 3 | 3 | — | 72.5° 00:50 | 10.78 | 74% | 48.8° |
| 2025-11-10 Mon | 93 | 0 | 0 | — | 72.5° 00:50 | 10.82 | 64% | 62.7° |
| 2025-11-11 Tue | 100 | 98 | 98 | 19:55–05:30 (good, 9.58 h) | 72.5° 00:45 | 10.85 | 53% | 76.2° |
| 2025-11-12 Wed | 100 | 90 | 90 | 21:00–05:35 (good, 8.58 h) | 72.5° 00:40 | 10.88 | 43% | 89.2° |
| 2025-11-13 Thu | 100 | 92 | 92 | 19:30–04:00 (good, 8.5 h) | 72.5° 00:35 | 10.91 | 33% | 101.9° |
| 2025-11-14 Fri | 100 | 100 | 100 | 19:25–05:35 (good, 10.17 h) | 72.5° 00:30 | 10.94 | 24% | 114.3° |
| 2025-11-15 Sat | 100 | 59 | 59 | 19:25–23:00 (good, 3.58 h) | 72.5° 00:30 | 10.97 | 16% | 126.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-10-17&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.