← 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. |
|---|---|---|---|---|---|---|---|---|
| 2047-02-20 Wed | 41 | — | unknown | 19:35–21:15 (good, 1.67 h) | 89.8° 15:05 | 10.04 | 14% | 98.8° |
| 2047-02-21 Thu | 40 | — | unknown | 19:35–21:10 (good, 1.58 h) | 89.8° 15:00 | 10.0 | 8% | 87.4° |
| 2047-02-22 Fri | 37 | — | unknown | 19:40–21:05 (good, 1.42 h) | 89.6° 14:55 | 9.96 | 3% | 76.2° |
| 2047-02-23 Sat | 35 | — | unknown | 19:40–21:00 (good, 1.33 h) | 89.6° 14:55 | 9.92 | 1% | 65.4° |
| 2047-02-24 Sun | 33 | — | unknown | 19:40–21:00 (good, 1.33 h) | 89.8° 14:50 | 9.87 | 0% | 55.0° |
| 2047-02-25 Mon | 32 | — | unknown | 19:40–20:55 (good, 1.25 h) | 89.8° 14:45 | 9.83 | 1% | 45.4° |
| 2047-02-26 Tue | 30 | — | unknown | 19:40–20:50 (good, 1.17 h) | 89.7° 14:40 | 9.79 | 4% | 37.1° |
| 2047-02-27 Wed | 26 | — | unknown | 19:45–20:40 (good, 0.92 h) | 89.5° 14:35 | 9.74 | 9% | 30.9° |
| 2047-02-28 Thu | 22 | — | unknown | 19:45–20:35 (good, 0.83 h) | 89.6° 14:35 | 9.7 | 15% | 28.3° |
| 2047-03-01 Fri | 18 | — | unknown | 19:45–20:25 (good, 0.67 h) | 89.8° 14:30 | 9.65 | 23% | 29.9° |
| 2047-03-02 Sat | 15 | — | unknown | 19:45–20:10 (good, 0.42 h) | 89.8° 14:25 | 9.61 | 31% | 35.4° |
| 2047-03-03 Sun | 12 | — | unknown | 19:15–21:05 (marginal, 1.83 h) | 89.7° 14:20 | 9.56 | 40% | 43.2° |
| 2047-03-04 Mon | 10 | — | unknown | 19:50–20:55 (marginal, 1.08 h) | 89.5° 14:20 | 9.51 | 50% | 52.5° |
| 2047-03-05 Tue | 8 | — | unknown | 19:50–20:50 (marginal, 1.0 h) | 89.7° 14:15 | 9.47 | 60% | 62.8° |
| 2047-03-06 Wed | 7 | — | unknown | 19:50–20:45 (marginal, 0.92 h) | 89.8° 14:10 | 9.42 | 70% | 73.8° |
| 2047-03-07 Thu | 7 | — | unknown | 19:55–20:40 (marginal, 0.75 h) | 89.8° 14:05 | 9.37 | 79% | 85.3° |
| 2047-03-08 Fri | 7 | — | unknown | 19:55–20:45 (marginal, 0.83 h) | 89.6° 14:00 | 9.32 | 87% | 97.4° |
| 2047-03-09 Sat | 7 | — | unknown | 19:55–20:40 (marginal, 0.75 h) | 89.6° 14:00 | 9.28 | 94% | 109.7° |
| 2047-03-10 Sun | 7 | — | unknown | 19:55–20:35 (marginal, 0.67 h) | 89.8° 13:55 | 9.23 | 98% | 122.1° |
| 2047-03-11 Mon | 6 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 89.8° 13:50 | 9.18 | 100% | 133.9° |
| 2047-03-12 Tue | 6 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 89.7° 13:45 | 9.13 | 99% | 144.2° |
| 2047-03-13 Wed | 6 | — | unknown | 20:00–20:25 (marginal, 0.42 h) | 89.6° 13:40 | 9.08 | 95% | 150.7° |
| 2047-03-14 Thu | 5 | — | unknown | 20:00–20:20 (marginal, 0.33 h) | 89.6° 13:40 | 9.03 | 88% | 150.9° |
| 2047-03-15 Fri | 3 | — | unknown | 19:30–19:45 (marginal, 0.25 h) | 89.8° 13:35 | 8.98 | 79% | 144.8° |
| 2047-03-16 Sat | 3 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 89.8° 13:30 | 8.93 | 69% | 135.3° |
| 2047-03-17 Sun | 2 | — | unknown | 20:05–20:10 (marginal, 0.08 h) | 89.7° 13:25 | 8.88 | 58% | 124.3° |
| 2047-03-18 Mon | 1 | — | unknown | — | 89.5° 13:25 | 8.83 | 47% | 112.9° |
| 2047-03-19 Tue | 1 | — | unknown | — | 89.7° 13:20 | 8.78 | 37% | 101.4° |
| 2047-03-20 Wed | 1 | — | unknown | — | 89.8° 13:15 | 8.73 | 27% | 90.0° |
| 2047-03-21 Thu | 1 | — | unknown | — | 89.8° 13:10 | 8.67 | 18% | 78.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2047-02-20&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.