← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-03-30 Sun | 0 | 0 | 0 | — | 79.1° 14:25 | 8.18 | 3% | 16.5° |
| 2025-03-31 Mon | 0 | 54 | 0 | — | 79.1° 14:20 | 8.12 | 9% | 20.0° |
| 2025-04-01 Tue | 0 | 0 | 0 | — | 79.1° 14:15 | 8.07 | 17% | 30.9° |
| 2025-04-02 Wed | 0 | 0 | 0 | — | 79.1° 14:10 | 8.01 | 27% | 43.7° |
| 2025-04-03 Thu | 0 | 0 | 0 | — | 79.1° 14:10 | 7.96 | 37% | 56.7° |
| 2025-04-04 Fri | 0 | 0 | 0 | — | 79.1° 14:05 | 7.9 | 48% | 69.6° |
| 2025-04-05 Sat | 0 | 0 | 0 | — | 79.1° 14:00 | 7.85 | 59% | 82.3° |
| 2025-04-06 Sun | 0 | 0 | 0 | — | 79.1° 13:55 | 7.79 | 69% | 94.6° |
| 2025-04-07 Mon | 0 | 0 | 0 | — | 79.1° 13:50 | 7.74 | 78% | 106.7° |
| 2025-04-08 Tue | 0 | 0 | 0 | — | 79.1° 13:50 | 7.68 | 85% | 118.5° |
| 2025-04-09 Wed | 0 | 0 | 0 | — | 79.1° 13:45 | 7.62 | 92% | 129.9° |
| 2025-04-10 Thu | 0 | 0 | 0 | — | 79.1° 13:40 | 7.57 | 96% | 141.0° |
| 2025-04-11 Fri | 0 | 0 | 0 | — | 79.1° 13:35 | 7.51 | 99% | 151.3° |
| 2025-04-12 Sat | 0 | 0 | 0 | — | 79.1° 13:35 | 7.45 | 100% | 159.8° |
| 2025-04-13 Sun | 0 | 0 | 0 | — | 79.1° 13:30 | 7.39 | 99% | 163.8° |
| 2025-04-14 Mon | 0 | 0 | 0 | — | 79.1° 13:25 | 7.34 | 97% | 160.2° |
| 2025-04-15 Tue | 0 | 0 | 0 | — | 79.1° 13:20 | 7.28 | 92% | 151.8° |
| 2025-04-16 Wed | 0 | 0 | 0 | — | 79.1° 13:15 | 7.22 | 87% | 141.6° |
| 2025-04-17 Thu | 0 | 0 | 0 | — | 79.1° 13:15 | 7.16 | 79% | 130.6° |
| 2025-04-18 Fri | 0 | 0 | 0 | — | 79.1° 13:10 | 7.11 | 71% | 119.1° |
| 2025-04-19 Sat | 0 | 0 | 0 | — | 79.1° 13:05 | 7.05 | 62% | 107.3° |
| 2025-04-20 Sun | 0 | 0 | 0 | — | 79.1° 13:00 | 6.99 | 52% | 95.1° |
| 2025-04-21 Mon | 0 | 0 | 0 | — | 79.1° 12:55 | 6.93 | 41% | 82.5° |
| 2025-04-22 Tue | 0 | 0 | 0 | — | 79.1° 12:55 | 6.87 | 30% | 69.5° |
| 2025-04-23 Wed | 0 | 0 | 0 | — | 79.1° 12:50 | 6.81 | 21% | 56.2° |
| 2025-04-24 Thu | 0 | 0 | 0 | — | 79.1° 12:45 | 6.76 | 12% | 42.8° |
| 2025-04-25 Fri | 0 | 0 | 0 | — | 79.1° 12:40 | 6.7 | 5% | 29.8° |
| 2025-04-26 Sat | 0 | 0 | 0 | — | 79.1° 12:40 | 6.64 | 1% | 19.1° |
| 2025-04-27 Sun | 0 | 0 | 0 | — | 79.1° 12:35 | 6.58 | 0% | 17.0° |
| 2025-04-28 Mon | 0 | 0 | 0 | — | 79.1° 12:30 | 6.52 | 2% | 25.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-03-30&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.