← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-03-07 Sat | 14 | — | unknown | 19:55–20:15 (good, 0.33 h) | 89.8° 14:05 | 9.37 | 15% | 88.8° |
| 2043-03-08 Sun | 13 | — | unknown | 19:55–20:10 (good, 0.25 h) | 89.6° 14:00 | 9.33 | 8% | 77.3° |
| 2043-03-09 Mon | 11 | — | unknown | 19:55–20:05 (good, 0.17 h) | 89.6° 14:00 | 9.28 | 3% | 65.7° |
| 2043-03-10 Tue | 10 | — | unknown | 19:55–20:05 (good, 0.17 h) | 89.7° 13:55 | 9.23 | 0% | 54.3° |
| 2043-03-11 Wed | 7 | — | unknown | 19:25–20:30 (marginal, 1.08 h) | 89.8° 13:50 | 9.18 | 0% | 43.8° |
| 2043-03-12 Thu | 7 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 89.7° 13:45 | 9.13 | 3% | 35.5° |
| 2043-03-13 Fri | 5 | — | unknown | 20:00–20:25 (marginal, 0.42 h) | 89.6° 13:40 | 9.08 | 9% | 31.6° |
| 2043-03-14 Sat | 4 | — | unknown | 20:00–20:20 (marginal, 0.33 h) | 89.6° 13:40 | 9.03 | 17% | 33.5° |
| 2043-03-15 Sun | 2 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 89.8° 13:35 | 8.98 | 27% | 40.3° |
| 2043-03-16 Mon | 2 | — | unknown | 20:05–20:10 (marginal, 0.08 h) | 89.8° 13:30 | 8.93 | 38% | 49.9° |
| 2043-03-17 Tue | 1 | — | unknown | — | 89.7° 13:25 | 8.88 | 49% | 60.6° |
| 2043-03-18 Wed | 1 | — | unknown | — | 89.5° 13:20 | 8.83 | 60% | 71.9° |
| 2043-03-19 Thu | 1 | — | unknown | — | 89.7° 13:20 | 8.78 | 70% | 83.2° |
| 2043-03-20 Fri | 0 | — | unknown | — | 89.8° 13:15 | 8.73 | 79% | 94.4° |
| 2043-03-21 Sat | 0 | — | unknown | — | 89.8° 13:10 | 8.68 | 87% | 105.4° |
| 2043-03-22 Sun | 0 | — | unknown | — | 89.6° 13:05 | 8.62 | 93% | 115.9° |
| 2043-03-23 Mon | 0 | — | unknown | — | 89.5° 13:05 | 8.57 | 97% | 125.8° |
| 2043-03-24 Tue | 0 | — | unknown | — | 89.7° 13:00 | 8.52 | 100% | 134.8° |
| 2043-03-25 Wed | 0 | — | unknown | — | 89.8° 12:55 | 8.47 | 100% | 142.2° |
| 2043-03-26 Thu | 0 | — | unknown | — | 89.7° 12:50 | 8.41 | 98% | 147.1° |
| 2043-03-27 Fri | 0 | — | unknown | — | 89.6° 12:45 | 8.36 | 95% | 148.5° |
| 2043-03-28 Sat | 0 | — | unknown | — | 89.6° 12:45 | 8.31 | 90% | 145.9° |
| 2043-03-29 Sun | 0 | — | unknown | — | 89.8° 13:40 | 8.25 | 84% | 140.3° |
| 2043-03-30 Mon | 0 | — | unknown | — | 89.8° 13:35 | 8.2 | 76% | 132.6° |
| 2043-03-31 Tue | 0 | — | unknown | — | 89.7° 13:30 | 8.14 | 68% | 123.8° |
| 2043-04-01 Wed | 0 | — | unknown | — | 89.5° 13:25 | 8.09 | 58% | 114.1° |
| 2043-04-02 Thu | 0 | — | unknown | — | 89.7° 13:25 | 8.03 | 49% | 103.8° |
| 2043-04-03 Fri | 0 | — | unknown | — | 89.8° 13:20 | 7.98 | 38% | 93.1° |
| 2043-04-04 Sat | 0 | — | unknown | — | 89.8° 13:15 | 7.92 | 29% | 82.1° |
| 2043-04-05 Sun | 0 | — | unknown | — | 89.6° 13:10 | 7.87 | 19% | 70.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-03-07&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.