← 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. |
|---|---|---|---|---|---|---|---|---|
| 2048-02-19 Wed | 27 | — | unknown | 19:35–20:55 (good, 1.33 h) | 89.8° 15:10 | 10.1 | 33% | 31.5° |
| 2048-02-20 Thu | 22 | — | unknown | 19:35–20:20 (good, 0.75 h) | 89.8° 15:05 | 10.05 | 42% | 37.8° |
| 2048-02-21 Fri | 18 | — | unknown | 19:35–21:40 (marginal, 2.08 h) | 89.6° 15:00 | 10.01 | 51% | 45.9° |
| 2048-02-22 Sat | 15 | — | unknown | 19:40–21:30 (marginal, 1.83 h) | 89.6° 15:00 | 9.97 | 61% | 55.2° |
| 2048-02-23 Sun | 14 | — | unknown | 19:40–21:25 (marginal, 1.75 h) | 89.8° 14:55 | 9.93 | 70% | 65.2° |
| 2048-02-24 Mon | 14 | — | unknown | 19:40–21:20 (marginal, 1.67 h) | 89.8° 14:50 | 9.88 | 78% | 75.6° |
| 2048-02-25 Tue | 15 | — | unknown | 19:40–21:20 (marginal, 1.67 h) | 89.7° 14:45 | 9.84 | 86% | 86.4° |
| 2048-02-26 Wed | 17 | — | unknown | 19:40–20:05 (good, 0.42 h) | 89.6° 14:40 | 9.8 | 92% | 97.6° |
| 2048-02-27 Thu | 19 | — | unknown | 19:45–20:25 (good, 0.67 h) | 89.6° 14:40 | 9.75 | 97% | 108.9° |
| 2048-02-28 Fri | 21 | — | unknown | 19:45–20:30 (good, 0.75 h) | 89.8° 14:35 | 9.71 | 99% | 120.2° |
| 2048-02-29 Sat | 21 | — | unknown | 19:45–20:30 (good, 0.75 h) | 89.8° 14:30 | 9.66 | 100% | 131.2° |
| 2048-03-01 Sun | 21 | — | unknown | 19:45–20:25 (good, 0.67 h) | 89.7° 14:25 | 9.62 | 98% | 141.1° |
| 2048-03-02 Mon | 22 | — | unknown | 19:50–20:30 (good, 0.67 h) | 89.5° 14:25 | 9.57 | 93% | 148.6° |
| 2048-03-03 Tue | 21 | — | unknown | 19:50–20:30 (good, 0.67 h) | 89.7° 14:20 | 9.52 | 86% | 151.3° |
| 2048-03-04 Wed | 19 | — | unknown | 19:50–20:25 (good, 0.58 h) | 89.8° 14:15 | 9.48 | 77% | 147.8° |
| 2048-03-05 Thu | 18 | — | unknown | 19:50–20:20 (good, 0.5 h) | 89.8° 14:10 | 9.43 | 67% | 139.8° |
| 2048-03-06 Fri | 14 | — | unknown | 19:55–20:15 (good, 0.33 h) | 89.6° 14:05 | 9.38 | 56% | 129.4° |
| 2048-03-07 Sat | 13 | — | unknown | 19:55–20:10 (good, 0.25 h) | 89.6° 14:05 | 9.34 | 44% | 117.9° |
| 2048-03-08 Sun | 11 | — | unknown | 19:55–20:10 (good, 0.25 h) | 89.7° 14:00 | 9.29 | 34% | 106.0° |
| 2048-03-09 Mon | 10 | — | unknown | 19:55–20:05 (good, 0.17 h) | 89.8° 13:55 | 9.24 | 23% | 93.9° |
| 2048-03-10 Tue | 8 | — | unknown | 19:25–20:35 (marginal, 1.17 h) | 89.7° 13:50 | 9.19 | 15% | 81.8° |
| 2048-03-11 Wed | 7 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 89.6° 13:45 | 9.14 | 8% | 70.1° |
| 2048-03-12 Thu | 6 | — | unknown | 20:00–20:25 (marginal, 0.42 h) | 89.6° 13:45 | 9.09 | 3% | 58.8° |
| 2048-03-13 Fri | 5 | — | unknown | 20:00–20:20 (marginal, 0.33 h) | 89.8° 13:40 | 9.04 | 1% | 48.2° |
| 2048-03-14 Sat | 4 | — | unknown | 20:00–20:20 (marginal, 0.33 h) | 89.8° 13:35 | 8.99 | 0% | 39.1° |
| 2048-03-15 Sun | 3 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 89.7° 13:30 | 8.94 | 2% | 32.1° |
| 2048-03-16 Mon | 2 | — | unknown | 20:05–20:10 (marginal, 0.08 h) | 89.5° 13:30 | 8.89 | 6% | 28.9° |
| 2048-03-17 Tue | 1 | — | unknown | — | 89.7° 13:25 | 8.84 | 11% | 30.3° |
| 2048-03-18 Wed | 1 | — | unknown | — | 89.8° 13:20 | 8.79 | 18% | 35.5° |
| 2048-03-19 Thu | 1 | — | unknown | — | 89.8° 13:15 | 8.74 | 25% | 43.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2048-02-19&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.