← 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. |
|---|---|---|---|---|---|---|---|---|
| 2044-08-22 Mon | 0 | — | unknown | — | 50.1° 15:45 | 7.08 | 0% | 37.1° |
| 2044-08-23 Tue | 0 | — | unknown | — | 50.1° 15:45 | 7.14 | 1% | 23.1° |
| 2044-08-24 Wed | 0 | — | unknown | — | 50.1° 15:40 | 7.2 | 5% | 10.5° |
| 2044-08-25 Thu | 0 | — | unknown | — | 50.1° 15:35 | 7.25 | 10% | 9.1° |
| 2044-08-26 Fri | 0 | — | unknown | — | 50.1° 15:30 | 7.31 | 18% | 20.3° |
| 2044-08-27 Sat | 0 | — | unknown | — | 50.1° 15:25 | 7.37 | 27% | 32.7° |
| 2044-08-28 Sun | 0 | — | unknown | — | 50.1° 15:25 | 7.42 | 36% | 45.0° |
| 2044-08-29 Mon | 0 | — | unknown | — | 50.1° 15:20 | 7.48 | 46% | 57.0° |
| 2044-08-30 Tue | 0 | — | unknown | — | 50.1° 15:15 | 7.54 | 55% | 68.9° |
| 2044-08-31 Wed | 0 | — | unknown | — | 50.1° 15:10 | 7.59 | 64% | 80.7° |
| 2044-09-01 Thu | 0 | — | unknown | — | 50.1° 15:05 | 7.65 | 73% | 92.5° |
| 2044-09-02 Fri | 0 | — | unknown | — | 50.1° 15:05 | 7.7 | 81% | 104.2° |
| 2044-09-03 Sat | 0 | — | unknown | — | 50.1° 15:00 | 7.76 | 88% | 116.1° |
| 2044-09-04 Sun | 0 | — | unknown | — | 50.1° 14:55 | 7.81 | 94% | 128.1° |
| 2044-09-05 Mon | 0 | — | unknown | — | 50.1° 14:50 | 7.87 | 98% | 140.2° |
| 2044-09-06 Tue | 0 | — | unknown | — | 50.1° 14:50 | 7.92 | 100% | 152.4° |
| 2044-09-07 Wed | 0 | — | unknown | — | 50.1° 14:45 | 7.98 | 100% | 164.3° |
| 2044-09-08 Thu | 0 | — | unknown | — | 50.1° 14:40 | 8.03 | 98% | 173.0° |
| 2044-09-09 Fri | 0 | — | unknown | — | 50.1° 14:35 | 8.09 | 94% | 166.1° |
| 2044-09-10 Sat | 0 | — | unknown | — | 50.1° 14:30 | 8.14 | 87% | 153.7° |
| 2044-09-11 Sun | 0 | — | unknown | — | 50.1° 14:30 | 8.19 | 79% | 140.5° |
| 2044-09-12 Mon | 0 | — | unknown | — | 50.1° 14:25 | 8.25 | 69% | 126.9° |
| 2044-09-13 Tue | 0 | — | unknown | — | 50.1° 14:20 | 8.3 | 58% | 113.1° |
| 2044-09-14 Wed | 0 | — | unknown | — | 50.1° 14:15 | 8.35 | 47% | 99.2° |
| 2044-09-15 Thu | 0 | — | unknown | — | 50.1° 14:10 | 8.41 | 36% | 85.1° |
| 2044-09-16 Fri | 0 | — | unknown | — | 50.1° 14:10 | 8.46 | 25% | 70.9° |
| 2044-09-17 Sat | 0 | — | unknown | — | 50.1° 14:05 | 8.51 | 16% | 56.7° |
| 2044-09-18 Sun | 0 | — | unknown | — | 50.1° 14:00 | 8.56 | 8% | 42.5° |
| 2044-09-19 Mon | 0 | — | unknown | — | 50.1° 13:55 | 8.61 | 3% | 28.5° |
| 2044-09-20 Tue | 0 | — | unknown | — | 50.1° 13:55 | 8.67 | 0% | 15.3° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2044-08-22&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.