← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-03-11 Tue | 5 | 28 | 1 | — | 89.5° 13:50 | 9.16 | 95% | 110.8° |
| 2025-03-12 Wed | 5 | 0 | 0 | — | 89.6° 13:45 | 9.11 | 98% | 121.0° |
| 2025-03-13 Thu | 4 | 62 | 2 | — | 89.7° 13:40 | 9.06 | 100% | 130.5° |
| 2025-03-14 Fri | 3 | 30 | 1 | — | 89.7° 13:35 | 9.01 | 100% | 138.9° |
| 2025-03-15 Sat | 3 | 75 | 2 | 20:05–20:10 (marginal, 0.08 h) | 89.5° 13:30 | 8.96 | 98% | 145.5° |
| 2025-03-16 Sun | 3 | 89 | 3 | 20:05–20:10 (marginal, 0.08 h) | 89.5° 13:30 | 8.91 | 94% | 149.1° |
| 2025-03-17 Mon | 1 | 0 | 0 | — | 89.7° 13:25 | 8.86 | 88% | 148.8° |
| 2025-03-18 Tue | 1 | 0 | 0 | — | 89.7° 13:20 | 8.81 | 82% | 144.7° |
| 2025-03-19 Wed | 1 | 100 | 1 | — | 89.6° 13:15 | 8.76 | 74% | 137.9° |
| 2025-03-20 Thu | 1 | 100 | 1 | — | 89.5° 13:10 | 8.71 | 65% | 129.4° |
| 2025-03-21 Fri | 1 | 100 | 1 | — | 89.6° 13:10 | 8.66 | 55% | 119.9° |
| 2025-03-22 Sat | 0 | 0 | 0 | — | 89.7° 13:05 | 8.61 | 45% | 109.6° |
| 2025-03-23 Sun | 0 | 0 | 0 | — | 89.7° 13:00 | 8.55 | 35% | 98.7° |
| 2025-03-24 Mon | 0 | 0 | 0 | — | 89.6° 12:55 | 8.5 | 26% | 87.3° |
| 2025-03-25 Tue | 0 | 0 | 0 | — | 89.5° 12:55 | 8.45 | 17% | 75.6° |
| 2025-03-26 Wed | 0 | 0 | 0 | — | 89.6° 12:50 | 8.39 | 9% | 63.7° |
| 2025-03-27 Thu | 0 | 0 | 0 | — | 89.7° 12:45 | 8.34 | 3% | 52.0° |
| 2025-03-28 Fri | 0 | 0 | 0 | — | 89.7° 12:40 | 8.29 | 0% | 41.4° |
| 2025-03-29 Sat | 0 | 32 | 0 | — | 89.6° 12:35 | 8.23 | 0% | 33.4° |
| 2025-03-30 Sun | 0 | 0 | 0 | — | 89.5° 13:35 | 8.18 | 3% | 30.6° |
| 2025-03-31 Mon | 0 | 0 | 0 | — | 89.7° 13:30 | 8.12 | 9% | 34.1° |
| 2025-04-01 Tue | 0 | 0 | 0 | — | 89.7° 13:25 | 8.07 | 17% | 42.2° |
| 2025-04-02 Wed | 0 | 0 | 0 | — | 89.6° 13:20 | 8.01 | 27% | 52.5° |
| 2025-04-03 Thu | 0 | 0 | 0 | — | 89.5° 13:15 | 7.96 | 37% | 63.7° |
| 2025-04-04 Fri | 0 | 0 | 0 | — | 89.6° 13:15 | 7.9 | 48% | 75.1° |
| 2025-04-05 Sat | 0 | 0 | 0 | — | 89.7° 13:10 | 7.85 | 59% | 86.5° |
| 2025-04-06 Sun | 0 | 0 | 0 | — | 89.7° 13:05 | 7.79 | 69% | 97.5° |
| 2025-04-07 Mon | 0 | 0 | 0 | — | 89.6° 13:00 | 7.74 | 78% | 108.3° |
| 2025-04-08 Tue | 0 | 99 | 0 | — | 89.5° 13:00 | 7.68 | 85% | 118.5° |
| 2025-04-09 Wed | 0 | 96 | 0 | — | 89.6° 12:55 | 7.62 | 92% | 128.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-03-11&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.