← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-08-07 Thu | 0 | 0 | 0 | — | 50.2° 16:45 | 6.2 | 98% | 112.8° |
| 2025-08-08 Fri | 0 | 0 | 0 | — | 50.2° 16:40 | 6.25 | 100% | 125.9° |
| 2025-08-09 Sat | 0 | 0 | 0 | — | 50.2° 16:40 | 6.31 | 100% | 139.3° |
| 2025-08-10 Sun | 0 | 0 | 0 | — | 50.2° 16:35 | 6.37 | 97% | 152.8° |
| 2025-08-11 Mon | 0 | 0 | 0 | — | 50.2° 16:30 | 6.43 | 92% | 166.0° |
| 2025-08-12 Tue | 0 | 0 | 0 | — | 50.2° 16:25 | 6.48 | 84% | 173.5° |
| 2025-08-13 Wed | 0 | 0 | 0 | — | 50.2° 16:25 | 6.54 | 75% | 163.0° |
| 2025-08-14 Thu | 0 | 0 | 0 | — | 50.2° 16:20 | 6.6 | 65% | 149.3° |
| 2025-08-15 Fri | 0 | 0 | 0 | — | 50.2° 16:15 | 6.66 | 53% | 135.4° |
| 2025-08-16 Sat | 0 | 0 | 0 | — | 50.2° 16:10 | 6.71 | 42% | 121.3° |
| 2025-08-17 Sun | 0 | 0 | 0 | — | 50.2° 16:05 | 6.77 | 31% | 107.4° |
| 2025-08-18 Mon | 0 | 0 | 0 | — | 50.2° 16:05 | 6.83 | 21% | 93.5° |
| 2025-08-19 Tue | 0 | 0 | 0 | — | 50.2° 16:00 | 6.89 | 13% | 79.7° |
| 2025-08-20 Wed | 0 | 0 | 0 | — | 50.2° 15:55 | 6.94 | 6% | 66.1° |
| 2025-08-21 Thu | 0 | 0 | 0 | — | 50.2° 15:50 | 7.0 | 2% | 52.8° |
| 2025-08-22 Fri | 0 | 0 | 0 | — | 50.2° 15:45 | 7.06 | 0% | 39.7° |
| 2025-08-23 Sat | 0 | 0 | 0 | — | 50.2° 15:45 | 7.12 | 0% | 27.0° |
| 2025-08-24 Sun | 0 | 0 | 0 | — | 50.2° 15:40 | 7.17 | 3% | 14.9° |
| 2025-08-25 Mon | 0 | 0 | 0 | — | 50.2° 15:35 | 7.23 | 7% | 6.4° |
| 2025-08-26 Tue | 0 | 0 | 0 | — | 50.2° 15:30 | 7.29 | 13% | 12.8° |
| 2025-08-27 Wed | 0 | 0 | 0 | — | 50.2° 15:25 | 7.34 | 20% | 24.0° |
| 2025-08-28 Thu | 0 | 0 | 0 | — | 50.2° 15:25 | 7.4 | 28% | 35.6° |
| 2025-08-29 Fri | 0 | 0 | 0 | — | 50.2° 15:20 | 7.46 | 37% | 47.3° |
| 2025-08-30 Sat | 0 | 0 | 0 | — | 50.2° 15:15 | 7.51 | 47% | 59.0° |
| 2025-08-31 Sun | 0 | 0 | 0 | — | 50.2° 15:10 | 7.57 | 56% | 70.8° |
| 2025-09-01 Mon | 0 | 0 | 0 | — | 50.2° 15:10 | 7.62 | 66% | 82.9° |
| 2025-09-02 Tue | 0 | 0 | 0 | — | 50.2° 15:05 | 7.68 | 75% | 95.2° |
| 2025-09-03 Wed | 0 | 0 | 0 | — | 50.2° 15:00 | 7.74 | 83% | 107.8° |
| 2025-09-04 Thu | 0 | 0 | 0 | — | 50.2° 14:55 | 7.79 | 90% | 120.8° |
| 2025-09-05 Fri | 0 | 0 | 0 | — | 50.2° 14:50 | 7.85 | 96% | 134.1° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-08-07&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.