← 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. |
|---|---|---|---|---|---|---|---|---|
| 2046-02-16 Fri | 17 | — | unknown | 19:30–21:45 (marginal, 2.25 h) | 89.8° 15:20 | 10.2 | 78% | 67.3° |
| 2046-02-17 Sat | 19 | — | unknown | 19:30–21:45 (marginal, 2.25 h) | 89.8° 15:15 | 10.16 | 87% | 79.7° |
| 2046-02-18 Sun | 22 | — | unknown | 19:35–20:00 (good, 0.42 h) | 89.6° 15:10 | 10.12 | 94% | 92.6° |
| 2046-02-19 Mon | 27 | — | unknown | 19:35–20:50 (good, 1.25 h) | 89.5° 15:10 | 10.08 | 98% | 105.8° |
| 2046-02-20 Tue | 32 | — | unknown | 19:35–21:00 (good, 1.42 h) | 89.7° 15:05 | 10.03 | 100% | 118.8° |
| 2046-02-21 Wed | 32 | — | unknown | 19:35–20:55 (good, 1.33 h) | 89.8° 15:00 | 9.99 | 98% | 131.2° |
| 2046-02-22 Thu | 35 | — | unknown | 19:40–20:55 (good, 1.25 h) | 89.8° 14:55 | 9.95 | 94% | 142.1° |
| 2046-02-23 Fri | 35 | — | unknown | 19:40–21:00 (good, 1.33 h) | 89.6° 14:50 | 9.91 | 87% | 149.7° |
| 2046-02-24 Sat | 33 | — | unknown | 19:40–20:55 (good, 1.25 h) | 89.6° 14:50 | 9.86 | 78% | 151.6° |
| 2046-02-25 Sun | 32 | — | unknown | 19:40–20:55 (good, 1.25 h) | 89.8° 14:45 | 9.82 | 68% | 147.3° |
| 2046-02-26 Mon | 29 | — | unknown | 19:45–20:50 (good, 1.08 h) | 89.8° 14:40 | 9.77 | 58% | 139.3° |
| 2046-02-27 Tue | 28 | — | unknown | 19:45–20:45 (good, 1.0 h) | 89.7° 14:35 | 9.73 | 47% | 129.5° |
| 2046-02-28 Wed | 26 | — | unknown | 19:45–20:40 (good, 0.92 h) | 89.5° 14:30 | 9.69 | 37% | 119.0° |
| 2046-03-01 Thu | 25 | — | unknown | 19:45–20:35 (good, 0.83 h) | 89.7° 14:30 | 9.64 | 28% | 108.3° |
| 2046-03-02 Fri | 23 | — | unknown | 19:45–20:35 (good, 0.83 h) | 89.8° 14:25 | 9.59 | 20% | 97.6° |
| 2046-03-03 Sat | 22 | — | unknown | 19:50–20:30 (good, 0.67 h) | 89.8° 14:20 | 9.55 | 12% | 87.0° |
| 2046-03-04 Sun | 20 | — | unknown | 19:50–20:25 (good, 0.58 h) | 89.7° 14:15 | 9.5 | 7% | 76.5° |
| 2046-03-05 Mon | 18 | — | unknown | 19:50–20:20 (good, 0.5 h) | 89.5° 14:15 | 9.45 | 3% | 66.3° |
| 2046-03-06 Tue | 16 | — | unknown | 19:50–20:20 (good, 0.5 h) | 89.7° 14:10 | 9.41 | 1% | 56.3° |
| 2046-03-07 Wed | 13 | — | unknown | 19:55–20:15 (good, 0.33 h) | 89.8° 14:05 | 9.36 | 0% | 46.9° |
| 2046-03-08 Thu | 13 | — | unknown | 19:55–20:10 (good, 0.25 h) | 89.8° 14:00 | 9.31 | 1% | 38.5° |
| 2046-03-09 Fri | 10 | — | unknown | 19:55–20:05 (good, 0.17 h) | 89.6° 13:55 | 9.26 | 4% | 31.9° |
| 2046-03-10 Sat | 9 | — | unknown | 19:55–20:00 (good, 0.08 h) | 89.6° 13:55 | 9.22 | 9% | 28.5° |
| 2046-03-11 Sun | 6 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 89.8° 13:50 | 9.17 | 15% | 29.6° |
| 2046-03-12 Mon | 5 | — | unknown | 20:00–20:25 (marginal, 0.42 h) | 89.8° 13:45 | 9.12 | 23% | 34.8° |
| 2046-03-13 Tue | 4 | — | unknown | 20:00–20:25 (marginal, 0.42 h) | 89.7° 13:40 | 9.07 | 32% | 42.8° |
| 2046-03-14 Wed | 3 | — | unknown | 20:00–20:20 (marginal, 0.33 h) | 89.5° 13:35 | 9.02 | 42% | 52.5° |
| 2046-03-15 Thu | 2 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 89.6° 13:35 | 8.97 | 52% | 63.4° |
| 2046-03-16 Fri | 1 | — | unknown | — | 89.8° 13:30 | 8.92 | 63% | 75.1° |
| 2046-03-17 Sat | 1 | — | unknown | — | 89.8° 13:25 | 8.87 | 74% | 87.3° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2046-02-16&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.