← 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. |
|---|---|---|---|---|---|---|---|---|
| 2044-08-06 Sat | 0 | — | unknown | — | 50.1° 16:50 | 6.16 | 96% | 107.8° |
| 2044-08-07 Sun | 0 | — | unknown | — | 50.1° 16:45 | 6.22 | 99% | 119.7° |
| 2044-08-08 Mon | 0 | — | unknown | — | 50.1° 16:40 | 6.28 | 100% | 131.7° |
| 2044-08-09 Tue | 0 | — | unknown | — | 50.1° 16:40 | 6.33 | 99% | 143.8° |
| 2044-08-10 Wed | 0 | — | unknown | — | 50.1° 16:35 | 6.39 | 96% | 155.8° |
| 2044-08-11 Thu | 0 | — | unknown | — | 50.1° 16:30 | 6.45 | 91% | 167.4° |
| 2044-08-12 Fri | 0 | — | unknown | — | 50.1° 16:25 | 6.51 | 84% | 172.7° |
| 2044-08-13 Sat | 0 | — | unknown | — | 50.1° 16:20 | 6.56 | 76% | 163.2° |
| 2044-08-14 Sun | 0 | — | unknown | — | 50.1° 16:20 | 6.62 | 66% | 150.6° |
| 2044-08-15 Mon | 0 | — | unknown | — | 50.1° 16:15 | 6.68 | 55% | 137.3° |
| 2044-08-16 Tue | 0 | — | unknown | — | 50.1° 16:10 | 6.74 | 44% | 123.7° |
| 2044-08-17 Wed | 0 | — | unknown | — | 50.1° 16:05 | 6.79 | 33% | 109.6° |
| 2044-08-18 Thu | 0 | — | unknown | — | 50.1° 16:00 | 6.85 | 22% | 95.3° |
| 2044-08-19 Fri | 0 | — | unknown | — | 50.1° 16:00 | 6.91 | 13% | 80.8° |
| 2044-08-20 Sat | 0 | — | unknown | — | 50.1° 15:55 | 6.97 | 6% | 66.2° |
| 2044-08-21 Sun | 0 | — | unknown | — | 50.1° 15:50 | 7.02 | 2% | 51.5° |
| 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° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2044-08-06&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.