← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-10-16 Thu | 0 | 0 | 0 | — | 50.2° 12:10 | 9.87 | 19% | 33.9° |
| 2025-10-17 Fri | 0 | 0 | 0 | — | 50.2° 12:05 | 9.92 | 12% | 21.7° |
| 2025-10-18 Sat | 0 | 0 | 0 | — | 50.2° 12:00 | 9.96 | 6% | 10.5° |
| 2025-10-19 Sun | 0 | 0 | 0 | — | 50.2° 11:55 | 10.0 | 2% | 7.4° |
| 2025-10-20 Mon | 0 | 0 | 0 | — | 50.2° 11:50 | 10.04 | 0% | 17.1° |
| 2025-10-21 Tue | 0 | 0 | 0 | — | 50.2° 11:45 | 10.08 | 0% | 28.6° |
| 2025-10-22 Wed | 0 | 0 | 0 | — | 50.2° 11:45 | 10.13 | 2% | 40.2° |
| 2025-10-23 Thu | 0 | 0 | 0 | — | 50.2° 11:40 | 10.17 | 5% | 51.9° |
| 2025-10-24 Fri | 0 | 0 | 0 | — | 50.2° 11:35 | 10.21 | 10% | 63.6° |
| 2025-10-25 Sat | 0 | 0 | 0 | — | 50.2° 10:30 | 10.25 | 17% | 75.3° |
| 2025-10-26 Sun | 0 | 0 | 0 | — | 50.2° 10:30 | 10.29 | 24% | 87.2° |
| 2025-10-27 Mon | 0 | 90 | 0 | — | 50.2° 10:25 | 10.32 | 33% | 99.1° |
| 2025-10-28 Tue | 0 | 100 | 0 | — | 50.2° 10:20 | 10.36 | 42% | 111.3° |
| 2025-10-29 Wed | 0 | 100 | 0 | — | 50.2° 10:15 | 10.4 | 52% | 123.8° |
| 2025-10-30 Thu | 0 | 0 | 0 | — | 50.2° 10:10 | 10.44 | 63% | 136.6° |
| 2025-10-31 Fri | 0 | 99 | 0 | — | 50.2° 10:10 | 10.47 | 73% | 149.7° |
| 2025-11-01 Sat | 0 | 98 | 0 | — | 50.2° 10:05 | 10.51 | 82% | 162.9° |
| 2025-11-02 Sun | 1 | 93 | 1 | — | 50.2° 10:00 | 10.55 | 90% | 173.4° |
| 2025-11-03 Mon | 1 | 0 | 0 | — | 50.2° 09:55 | 10.58 | 96% | 165.3° |
| 2025-11-04 Tue | 1 | 0 | 0 | — | 50.2° 09:50 | 10.62 | 99% | 151.0° |
| 2025-11-05 Wed | 1 | 0 | 0 | — | 50.2° 09:50 | 10.65 | 100% | 136.0° |
| 2025-11-06 Thu | 1 | 0 | 0 | — | 50.2° 09:45 | 10.69 | 97% | 120.9° |
| 2025-11-07 Fri | 2 | 0 | 0 | — | 50.2° 09:40 | 10.72 | 92% | 105.9° |
| 2025-11-08 Sat | 2 | 0 | 0 | — | 50.2° 09:35 | 10.75 | 84% | 91.2° |
| 2025-11-09 Sun | 2 | 0 | 0 | — | 50.2° 09:35 | 10.78 | 74% | 76.9° |
| 2025-11-10 Mon | 2 | 0 | 0 | — | 50.2° 09:30 | 10.82 | 64% | 63.1° |
| 2025-11-11 Tue | 3 | 99 | 3 | 05:15–05:35 (marginal, 0.33 h) | 50.2° 09:25 | 10.85 | 53% | 49.8° |
| 2025-11-12 Wed | 4 | 98 | 4 | 05:10–05:35 (marginal, 0.42 h) | 50.2° 09:20 | 10.88 | 43% | 36.9° |
| 2025-11-13 Thu | 5 | 31 | 2 | — | 50.2° 09:15 | 10.91 | 33% | 24.5° |
| 2025-11-14 Fri | 7 | 100 | 7 | 05:00–05:35 (marginal, 0.58 h) | 50.2° 09:15 | 10.94 | 24% | 13.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-10-16&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.