← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-05-11 Sun | 0 | 0 | 0 | — | 42.9° 15:40 | 5.78 | 99% | 129.7° |
| 2025-05-12 Mon | 0 | 0 | 0 | — | 42.9° 15:35 | 5.73 | 100% | 137.3° |
| 2025-05-13 Tue | 0 | 0 | 0 | — | 42.9° 15:30 | 5.67 | 98% | 143.1° |
| 2025-05-14 Wed | 0 | 0 | 0 | — | 42.9° 15:30 | 5.62 | 95% | 146.1° |
| 2025-05-15 Thu | 0 | 0 | 0 | — | 42.9° 15:25 | 5.56 | 90% | 145.4° |
| 2025-05-16 Fri | 0 | 0 | 0 | — | 42.9° 15:20 | 5.51 | 84% | 141.1° |
| 2025-05-17 Sat | 0 | 0 | 0 | — | 42.9° 15:15 | 5.46 | 76% | 134.1° |
| 2025-05-18 Sun | 0 | 0 | 0 | — | 42.9° 15:10 | 5.41 | 66% | 125.3° |
| 2025-05-19 Mon | 0 | 0 | 0 | — | 42.9° 15:10 | 5.36 | 56% | 115.3° |
| 2025-05-20 Tue | 0 | 0 | 0 | — | 42.9° 15:05 | 5.31 | 45% | 104.4° |
| 2025-05-21 Wed | 0 | 0 | 0 | — | 42.9° 15:00 | 5.26 | 34% | 93.0° |
| 2025-05-22 Thu | 0 | 0 | 0 | — | 42.9° 14:55 | 5.21 | 24% | 81.2° |
| 2025-05-23 Fri | 0 | 0 | 0 | — | 42.9° 14:50 | 5.16 | 15% | 69.2° |
| 2025-05-24 Sat | 0 | 0 | 0 | — | 42.9° 14:50 | 5.12 | 7% | 57.6° |
| 2025-05-25 Sun | 0 | 0 | 0 | — | 42.9° 14:45 | 5.07 | 2% | 46.9° |
| 2025-05-26 Mon | 0 | 0 | 0 | — | 42.9° 14:40 | 5.03 | 0% | 38.5° |
| 2025-05-27 Tue | 0 | 0 | 0 | — | 42.9° 14:35 | 4.98 | 1% | 34.0° |
| 2025-05-28 Wed | 0 | 0 | 0 | — | 42.9° 14:35 | 4.94 | 5% | 35.0° |
| 2025-05-29 Thu | 0 | 0 | 0 | — | 42.9° 14:30 | 4.9 | 11% | 40.7° |
| 2025-05-30 Fri | 0 | 0 | 0 | — | 42.9° 14:25 | 4.86 | 19% | 49.1° |
| 2025-05-31 Sat | 0 | 0 | 0 | — | 42.9° 14:20 | 4.82 | 28% | 58.8° |
| 2025-06-01 Sun | 0 | 0 | 0 | — | 42.9° 14:15 | 4.79 | 38% | 69.0° |
| 2025-06-02 Mon | 0 | 0 | 0 | — | 42.9° 14:15 | 4.75 | 48% | 79.3° |
| 2025-06-03 Tue | 0 | 0 | 0 | — | 42.9° 14:10 | 4.72 | 58% | 89.5° |
| 2025-06-04 Wed | 0 | 0 | 0 | — | 42.9° 14:05 | 4.69 | 67% | 99.5° |
| 2025-06-05 Thu | 0 | 0 | 0 | — | 42.9° 14:00 | 4.65 | 76% | 109.2° |
| 2025-06-06 Fri | 0 | 0 | 0 | — | 42.9° 13:55 | 4.63 | 83% | 118.6° |
| 2025-06-07 Sat | 0 | 0 | 0 | — | 42.9° 13:55 | 4.6 | 90% | 127.5° |
| 2025-06-08 Sun | 0 | 0 | 0 | — | 42.9° 13:50 | 4.57 | 95% | 135.4° |
| 2025-06-09 Mon | 0 | 0 | 0 | — | 42.9° 13:45 | 4.55 | 98% | 141.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-05-11&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.