← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-04-26 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° |
| 2025-04-29 Tue | 0 | 0 | 0 | — | 79.1° 12:25 | 6.47 | 7% | 38.4° |
| 2025-04-30 Wed | 0 | 0 | 0 | — | 79.1° 12:20 | 6.41 | 14% | 51.9° |
| 2025-05-01 Thu | 0 | 0 | 0 | — | 79.1° 12:20 | 6.35 | 23% | 65.3° |
| 2025-05-02 Fri | 0 | 0 | 0 | — | 79.1° 12:15 | 6.29 | 33% | 78.4° |
| 2025-05-03 Sat | 0 | 0 | 0 | — | 79.1° 12:10 | 6.23 | 43% | 91.2° |
| 2025-05-04 Sun | 0 | 0 | 0 | — | 79.1° 12:05 | 6.18 | 54% | 103.6° |
| 2025-05-05 Mon | 0 | 0 | 0 | — | 79.1° 12:00 | 6.12 | 64% | 115.6° |
| 2025-05-06 Tue | 0 | 0 | 0 | — | 79.1° 11:55 | 6.06 | 73% | 127.2° |
| 2025-05-07 Wed | 0 | 0 | 0 | — | 79.1° 11:50 | 6.0 | 81% | 138.3° |
| 2025-05-08 Thu | 0 | 0 | 0 | — | 79.1° 11:45 | 5.95 | 88% | 148.8° |
| 2025-05-09 Fri | 0 | 0 | 0 | — | 79.1° 11:45 | 5.89 | 93% | 157.9° |
| 2025-05-10 Sat | 0 | 0 | 0 | — | 79.1° 11:40 | 5.84 | 97% | 163.4° |
| 2025-05-11 Sun | 0 | 0 | 0 | — | 79.1° 11:35 | 5.78 | 99% | 161.7° |
| 2025-05-12 Mon | 0 | 0 | 0 | — | 79.1° 11:30 | 5.73 | 100% | 154.1° |
| 2025-05-13 Tue | 0 | 0 | 0 | — | 79.1° 11:25 | 5.67 | 98% | 144.2° |
| 2025-05-14 Wed | 0 | 100 | 0 | — | 79.1° 11:25 | 5.62 | 95% | 133.3° |
| 2025-05-15 Thu | 0 | 0 | 0 | — | 79.1° 11:20 | 5.56 | 90% | 121.9° |
| 2025-05-16 Fri | 0 | 0 | 0 | — | 79.1° 11:15 | 5.51 | 84% | 110.1° |
| 2025-05-17 Sat | 0 | 0 | 0 | — | 79.1° 11:10 | 5.46 | 76% | 98.1° |
| 2025-05-18 Sun | 0 | 100 | 0 | — | 79.1° 11:05 | 5.41 | 66% | 85.8° |
| 2025-05-19 Mon | 0 | 100 | 0 | — | 79.1° 11:05 | 5.36 | 56% | 73.2° |
| 2025-05-20 Tue | 0 | 98 | 0 | — | 79.1° 11:00 | 5.31 | 45% | 60.4° |
| 2025-05-21 Wed | 0 | 82 | 0 | — | 79.1° 10:55 | 5.26 | 34% | 47.5° |
| 2025-05-22 Thu | 0 | 13 | 0 | — | 79.1° 10:50 | 5.21 | 24% | 34.6° |
| 2025-05-23 Fri | 0 | 12 | 0 | — | 79.1° 10:50 | 5.16 | 15% | 22.9° |
| 2025-05-24 Sat | 0 | 0 | 0 | — | 79.1° 10:45 | 5.12 | 7% | 16.3° |
| 2025-05-25 Sun | 0 | 0 | 0 | — | 79.1° 10:40 | 5.07 | 2% | 21.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-04-26&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.