← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-07-18 Fri | 1 | 98 | 1 | — | 50.2° 18:05 | 5.14 | 40% | 146.2° |
| 2025-07-19 Sat | 1 | 99 | 1 | — | 50.2° 18:00 | 5.19 | 29% | 132.1° |
| 2025-07-20 Sun | 1 | 99 | 1 | — | 50.2° 17:55 | 5.24 | 19% | 117.9° |
| 2025-07-21 Mon | 1 | 99 | 1 | — | 50.2° 17:55 | 5.28 | 11% | 103.7° |
| 2025-07-22 Tue | 0 | 100 | 0 | — | 50.2° 17:50 | 5.33 | 5% | 89.5° |
| 2025-07-23 Wed | 0 | 85 | 0 | — | 50.2° 17:45 | 5.38 | 1% | 75.5° |
| 2025-07-24 Thu | 0 | 86 | 0 | — | 50.2° 17:40 | 5.43 | 0% | 61.7° |
| 2025-07-25 Fri | 0 | 99 | 0 | — | 50.2° 17:35 | 5.48 | 2% | 48.2° |
| 2025-07-26 Sat | 0 | 100 | 0 | — | 50.2° 17:35 | 5.54 | 5% | 35.1° |
| 2025-07-27 Sun | 0 | 99 | 0 | — | 50.2° 17:30 | 5.59 | 11% | 22.6° |
| 2025-07-28 Mon | 0 | 96 | 0 | — | 50.2° 17:25 | 5.64 | 18% | 11.0° |
| 2025-07-29 Tue | 0 | 22 | 0 | — | 50.2° 17:20 | 5.7 | 26% | 7.0° |
| 2025-07-30 Wed | 0 | 0 | 0 | — | 50.2° 17:20 | 5.75 | 35% | 16.5° |
| 2025-07-31 Thu | 0 | 0 | 0 | — | 50.2° 17:15 | 5.81 | 44% | 27.9° |
| 2025-08-01 Fri | 0 | 78 | 0 | — | 50.2° 17:10 | 5.86 | 54% | 39.5° |
| 2025-08-02 Sat | 0 | 99 | 0 | — | 50.2° 17:05 | 5.92 | 63% | 51.2° |
| 2025-08-03 Sun | 0 | 99 | 0 | — | 50.2° 17:00 | 5.97 | 72% | 63.1° |
| 2025-08-04 Mon | 0 | 83 | 0 | — | 50.2° 17:00 | 6.03 | 80% | 75.1° |
| 2025-08-05 Tue | 0 | 50 | 0 | — | 50.2° 16:55 | 6.08 | 88% | 87.4° |
| 2025-08-06 Wed | 0 | 0 | 0 | — | 50.2° 16:50 | 6.14 | 94% | 99.9° |
| 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° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-07-18&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.