← 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 | — | 72.5° 13:50 | 5.78 | 99% | 163.2° |
| 2025-05-12 Mon | 0 | 0 | 0 | — | 72.5° 13:45 | 5.73 | 100% | 175.1° |
| 2025-05-13 Tue | 0 | 0 | 0 | — | 72.5° 13:45 | 5.67 | 98% | 172.9° |
| 2025-05-14 Wed | 0 | 0 | 0 | — | 72.5° 13:40 | 5.62 | 95% | 160.9° |
| 2025-05-15 Thu | 0 | 0 | 0 | — | 72.5° 13:35 | 5.56 | 90% | 148.7° |
| 2025-05-16 Fri | 0 | 0 | 0 | — | 72.5° 13:30 | 5.51 | 84% | 136.3° |
| 2025-05-17 Sat | 0 | 0 | 0 | — | 72.5° 13:25 | 5.46 | 76% | 123.8° |
| 2025-05-18 Sun | 0 | 0 | 0 | — | 72.5° 13:25 | 5.41 | 66% | 110.9° |
| 2025-05-19 Mon | 0 | 0 | 0 | — | 72.5° 13:20 | 5.36 | 56% | 97.8° |
| 2025-05-20 Tue | 0 | 0 | 0 | — | 72.5° 13:15 | 5.31 | 45% | 84.4° |
| 2025-05-21 Wed | 0 | 0 | 0 | — | 72.5° 13:10 | 5.26 | 34% | 70.6° |
| 2025-05-22 Thu | 0 | 0 | 0 | — | 72.5° 13:10 | 5.21 | 24% | 56.3° |
| 2025-05-23 Fri | 0 | 0 | 0 | — | 72.5° 13:05 | 5.16 | 15% | 41.7° |
| 2025-05-24 Sat | 0 | 0 | 0 | — | 72.5° 13:00 | 5.12 | 7% | 26.8° |
| 2025-05-25 Sun | 0 | 0 | 0 | — | 72.5° 12:55 | 5.07 | 2% | 11.7° |
| 2025-05-26 Mon | 0 | 0 | 0 | — | 72.5° 12:50 | 5.03 | 0% | 3.4° |
| 2025-05-27 Tue | 0 | 0 | 0 | — | 72.5° 12:50 | 4.98 | 1% | 18.3° |
| 2025-05-28 Wed | 0 | 0 | 0 | — | 72.5° 12:45 | 4.94 | 5% | 33.0° |
| 2025-05-29 Thu | 0 | 0 | 0 | — | 72.5° 12:40 | 4.9 | 11% | 47.3° |
| 2025-05-30 Fri | 0 | 0 | 0 | — | 72.5° 12:35 | 4.86 | 19% | 61.2° |
| 2025-05-31 Sat | 0 | 0 | 0 | — | 72.5° 12:30 | 4.82 | 28% | 74.6° |
| 2025-06-01 Sun | 0 | 0 | 0 | — | 72.5° 12:30 | 4.79 | 38% | 87.6° |
| 2025-06-02 Mon | 0 | 0 | 0 | — | 72.5° 12:25 | 4.75 | 48% | 100.2° |
| 2025-06-03 Tue | 0 | 0 | 0 | — | 72.5° 12:20 | 4.72 | 58% | 112.5° |
| 2025-06-04 Wed | 0 | 0 | 0 | — | 72.5° 12:15 | 4.69 | 67% | 124.5° |
| 2025-06-05 Thu | 0 | 0 | 0 | — | 72.5° 12:15 | 4.65 | 76% | 136.4° |
| 2025-06-06 Fri | 0 | 0 | 0 | — | 72.5° 12:10 | 4.63 | 83% | 148.3° |
| 2025-06-07 Sat | 0 | 0 | 0 | — | 72.5° 12:05 | 4.6 | 90% | 160.1° |
| 2025-06-08 Sun | 0 | 0 | 0 | — | 72.5° 12:00 | 4.57 | 95% | 172.0° |
| 2025-06-09 Mon | 0 | 0 | 0 | — | 72.5° 11:55 | 4.55 | 98% | 176.0° |
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.