← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-03-27 Fri | 21 | — | unknown | 20:20–20:55 (good, 0.58 h) | 72.6° 15:50 | 8.36 | 95% | 153.0° |
| 2043-03-28 Sat | 20 | — | unknown | 20:20–20:55 (good, 0.58 h) | 72.5° 15:45 | 8.31 | 90% | 164.9° |
| 2043-03-29 Sun | 19 | — | unknown | 21:20–21:55 (good, 0.58 h) | 72.5° 16:45 | 8.25 | 84% | 176.7° |
| 2043-03-30 Mon | 17 | — | unknown | 21:20–21:50 (good, 0.5 h) | 72.6° 16:40 | 8.2 | 76% | 171.5° |
| 2043-03-31 Tue | 14 | — | unknown | 21:25–21:45 (good, 0.33 h) | 72.6° 16:35 | 8.14 | 68% | 159.5° |
| 2043-04-01 Wed | 13 | — | unknown | 21:25–21:40 (good, 0.25 h) | 72.6° 16:30 | 8.09 | 58% | 147.5° |
| 2043-04-02 Thu | 11 | — | unknown | 21:25–21:40 (good, 0.25 h) | 72.5° 16:25 | 8.03 | 49% | 135.2° |
| 2043-04-03 Fri | 10 | — | unknown | 21:25–21:35 (good, 0.17 h) | 72.5° 16:25 | 7.98 | 38% | 122.6° |
| 2043-04-04 Sat | 7 | — | unknown | 20:55–21:55 (marginal, 1.0 h) | 72.6° 16:20 | 7.92 | 29% | 109.6° |
| 2043-04-05 Sun | 7 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 72.6° 16:15 | 7.87 | 19% | 96.1° |
| 2043-04-06 Mon | 6 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 72.6° 16:10 | 7.81 | 11% | 82.1° |
| 2043-04-07 Tue | 4 | — | unknown | 20:55–21:20 (marginal, 0.42 h) | 72.5° 16:05 | 7.76 | 5% | 67.8° |
| 2043-04-08 Wed | 3 | — | unknown | 21:00–21:15 (marginal, 0.25 h) | 72.5° 16:05 | 7.7 | 1% | 53.0° |
| 2043-04-09 Thu | 3 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 72.6° 16:00 | 7.64 | 0% | 37.9° |
| 2043-04-10 Fri | 2 | — | unknown | 21:00–21:05 (marginal, 0.08 h) | 72.6° 15:55 | 7.59 | 2% | 22.8° |
| 2043-04-11 Sat | 1 | — | unknown | — | 72.5° 15:50 | 7.53 | 7% | 7.7° |
| 2043-04-12 Sun | 1 | — | unknown | — | 72.5° 15:50 | 7.47 | 14% | 7.2° |
| 2043-04-13 Mon | 1 | — | unknown | — | 72.5° 15:45 | 7.41 | 23% | 21.8° |
| 2043-04-14 Tue | 0 | — | unknown | — | 72.6° 15:40 | 7.36 | 34% | 36.0° |
| 2043-04-15 Wed | 0 | — | unknown | — | 72.6° 15:35 | 7.3 | 45% | 49.7° |
| 2043-04-16 Thu | 0 | — | unknown | — | 72.5° 15:30 | 7.24 | 55% | 63.1° |
| 2043-04-17 Fri | 0 | — | unknown | — | 72.5° 15:30 | 7.18 | 66% | 76.2° |
| 2043-04-18 Sat | 0 | — | unknown | — | 72.6° 15:25 | 7.13 | 75% | 88.9° |
| 2043-04-19 Sun | 0 | — | unknown | — | 72.6° 15:20 | 7.07 | 83% | 101.4° |
| 2043-04-20 Mon | 0 | — | unknown | — | 72.6° 15:15 | 7.01 | 90% | 113.7° |
| 2043-04-21 Tue | 0 | — | unknown | — | 72.5° 15:10 | 6.95 | 95% | 125.8° |
| 2043-04-22 Wed | 0 | — | unknown | — | 72.5° 15:10 | 6.89 | 98% | 137.8° |
| 2043-04-23 Thu | 0 | — | unknown | — | 72.6° 15:05 | 6.84 | 100% | 149.8° |
| 2043-04-24 Fri | 0 | — | unknown | — | 72.6° 15:00 | 6.78 | 100% | 161.6° |
| 2043-04-25 Sat | 0 | — | unknown | — | 72.5° 14:55 | 6.72 | 98% | 173.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-03-27&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.