← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-07-23 Wed | 0 | 0 | 0 | — | 42.9° 10:50 | 5.38 | 1% | 42.1° |
| 2025-07-24 Thu | 0 | 0 | 0 | — | 42.9° 10:45 | 5.43 | 0% | 50.9° |
| 2025-07-25 Fri | 0 | 0 | 0 | — | 42.9° 10:40 | 5.48 | 2% | 61.0° |
| 2025-07-26 Sat | 0 | 0 | 0 | — | 42.9° 10:35 | 5.54 | 5% | 71.5° |
| 2025-07-27 Sun | 0 | 0 | 0 | — | 42.9° 10:35 | 5.59 | 11% | 82.1° |
| 2025-07-28 Mon | 0 | 0 | 0 | — | 42.9° 10:30 | 5.64 | 18% | 92.5° |
| 2025-07-29 Tue | 0 | 0 | 0 | — | 42.9° 10:25 | 5.7 | 26% | 102.7° |
| 2025-07-30 Wed | 0 | 0 | 0 | — | 42.9° 10:20 | 5.75 | 35% | 112.5° |
| 2025-07-31 Thu | 0 | 0 | 0 | — | 42.9° 10:15 | 5.81 | 44% | 121.8° |
| 2025-08-01 Fri | 0 | 0 | 0 | — | 42.9° 10:15 | 5.86 | 54% | 130.4° |
| 2025-08-02 Sat | 0 | 0 | 0 | — | 42.9° 10:10 | 5.92 | 63% | 137.8° |
| 2025-08-03 Sun | 0 | 0 | 0 | — | 42.9° 10:05 | 5.97 | 72% | 143.4° |
| 2025-08-04 Mon | 0 | 0 | 0 | — | 42.9° 10:00 | 6.03 | 80% | 146.1° |
| 2025-08-05 Tue | 0 | 0 | 0 | — | 42.9° 09:55 | 6.08 | 88% | 145.0° |
| 2025-08-06 Wed | 0 | 0 | 0 | — | 42.9° 09:55 | 6.14 | 94% | 140.3° |
| 2025-08-07 Thu | 0 | 0 | 0 | — | 42.9° 09:50 | 6.2 | 98% | 132.8° |
| 2025-08-08 Fri | 0 | 0 | 0 | — | 42.9° 09:45 | 6.25 | 100% | 123.5° |
| 2025-08-09 Sat | 0 | 0 | 0 | — | 42.9° 09:40 | 6.31 | 100% | 113.0° |
| 2025-08-10 Sun | 0 | 100 | 0 | — | 42.9° 09:40 | 6.37 | 97% | 101.9° |
| 2025-08-11 Mon | 0 | 100 | 0 | — | 42.9° 09:35 | 6.43 | 92% | 90.3° |
| 2025-08-12 Tue | 0 | 100 | 0 | — | 42.9° 09:30 | 6.48 | 84% | 78.6° |
| 2025-08-13 Wed | 0 | 100 | 0 | — | 42.9° 09:25 | 6.54 | 75% | 67.1° |
| 2025-08-14 Thu | 0 | 0 | 0 | — | 42.9° 09:20 | 6.6 | 65% | 56.1° |
| 2025-08-15 Fri | 0 | 100 | 0 | — | 42.9° 09:20 | 6.66 | 53% | 46.2° |
| 2025-08-16 Sat | 0 | 95 | 0 | — | 42.9° 09:15 | 6.71 | 42% | 38.5° |
| 2025-08-17 Sun | 0 | 84 | 0 | — | 42.9° 09:10 | 6.77 | 31% | 34.3° |
| 2025-08-18 Mon | 0 | 5 | 0 | — | 42.9° 09:05 | 6.83 | 21% | 34.9° |
| 2025-08-19 Tue | 1 | 0 | 0 | — | 42.9° 09:00 | 6.89 | 13% | 39.9° |
| 2025-08-20 Wed | 1 | 100 | 1 | — | 42.9° 09:00 | 6.94 | 6% | 47.9° |
| 2025-08-21 Thu | 1 | 100 | 1 | — | 42.9° 08:55 | 7.0 | 2% | 57.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-07-23&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.