← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-03-30 Mon | 15 | — | unknown | 21:20–21:45 (good, 0.42 h) | 42.9° 18:25 | 8.2 | 76% | 143.9° |
| 2043-03-31 Tue | 13 | — | unknown | 21:25–21:40 (good, 0.25 h) | 42.9° 18:25 | 8.14 | 68% | 146.2° |
| 2043-04-01 Wed | 12 | — | unknown | 21:25–21:40 (good, 0.25 h) | 42.9° 18:20 | 8.09 | 58% | 144.9° |
| 2043-04-02 Thu | 10 | — | unknown | 21:25–21:35 (good, 0.17 h) | 42.9° 18:15 | 8.03 | 49% | 140.1° |
| 2043-04-03 Fri | 9 | — | unknown | 21:25–21:30 (good, 0.08 h) | 42.9° 18:10 | 7.98 | 38% | 132.8° |
| 2043-04-04 Sat | 7 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 42.9° 18:05 | 7.92 | 29% | 123.6° |
| 2043-04-05 Sun | 6 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 42.9° 18:05 | 7.87 | 19% | 113.2° |
| 2043-04-06 Mon | 5 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 42.9° 18:00 | 7.81 | 11% | 101.9° |
| 2043-04-07 Tue | 4 | — | unknown | 20:55–21:15 (marginal, 0.33 h) | 42.9° 17:55 | 7.76 | 5% | 90.0° |
| 2043-04-08 Wed | 3 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 42.9° 17:50 | 7.7 | 1% | 77.7° |
| 2043-04-09 Thu | 3 | — | unknown | 21:35–21:40 (marginal, 0.08 h) | 42.9° 17:45 | 7.64 | 0% | 65.6° |
| 2043-04-10 Fri | 2 | — | unknown | — | 42.9° 17:45 | 7.59 | 2% | 54.0° |
| 2043-04-11 Sat | 1 | — | unknown | — | 42.9° 17:40 | 7.53 | 7% | 43.9° |
| 2043-04-12 Sun | 1 | — | unknown | — | 42.9° 17:35 | 7.47 | 14% | 36.6° |
| 2043-04-13 Mon | 1 | — | unknown | — | 42.9° 17:30 | 7.41 | 23% | 33.8° |
| 2043-04-14 Tue | 0 | — | unknown | — | 42.9° 17:30 | 7.36 | 34% | 36.1° |
| 2043-04-15 Wed | 0 | — | unknown | — | 42.9° 17:25 | 7.3 | 45% | 42.5° |
| 2043-04-16 Thu | 0 | — | unknown | — | 42.9° 17:20 | 7.24 | 55% | 51.1° |
| 2043-04-17 Fri | 0 | — | unknown | — | 42.9° 17:15 | 7.18 | 66% | 60.7° |
| 2043-04-18 Sat | 0 | — | unknown | — | 42.9° 17:10 | 7.13 | 75% | 70.8° |
| 2043-04-19 Sun | 0 | — | unknown | — | 42.9° 17:10 | 7.07 | 83% | 81.0° |
| 2043-04-20 Mon | 0 | — | unknown | — | 42.9° 17:05 | 7.01 | 90% | 91.2° |
| 2043-04-21 Tue | 0 | — | unknown | — | 42.9° 17:00 | 6.95 | 95% | 101.3° |
| 2043-04-22 Wed | 0 | — | unknown | — | 42.9° 16:55 | 6.89 | 98% | 111.1° |
| 2043-04-23 Thu | 0 | — | unknown | — | 42.9° 16:50 | 6.84 | 100% | 120.4° |
| 2043-04-24 Fri | 0 | — | unknown | — | 42.9° 16:50 | 6.78 | 100% | 129.2° |
| 2043-04-25 Sat | 0 | — | unknown | — | 42.9° 16:45 | 6.72 | 98% | 136.8° |
| 2043-04-26 Sun | 0 | — | unknown | — | 42.9° 16:40 | 6.66 | 94% | 142.7° |
| 2043-04-27 Mon | 0 | — | unknown | — | 42.9° 16:35 | 6.6 | 88% | 146.0° |
| 2043-04-28 Tue | 0 | — | unknown | — | 42.9° 16:35 | 6.54 | 82% | 145.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-03-30&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.