← 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. |
|---|---|---|---|---|---|---|---|---|
| 2044-03-19 Sat | 34 | — | unknown | 20:10–21:30 (good, 1.33 h) | 72.6° 16:20 | 8.74 | 66% | 169.0° |
| 2044-03-20 Sun | 33 | — | unknown | 20:10–21:25 (good, 1.25 h) | 72.6° 16:15 | 8.69 | 57% | 157.2° |
| 2044-03-21 Mon | 31 | — | unknown | 20:10–21:20 (good, 1.17 h) | 72.6° 16:10 | 8.64 | 48% | 145.4° |
| 2044-03-22 Tue | 30 | — | unknown | 20:10–21:20 (good, 1.17 h) | 72.5° 16:05 | 8.58 | 38% | 133.5° |
| 2044-03-23 Wed | 27 | — | unknown | 20:15–21:15 (good, 1.0 h) | 72.6° 16:05 | 8.53 | 29% | 121.4° |
| 2044-03-24 Thu | 26 | — | unknown | 20:15–21:10 (good, 0.92 h) | 72.6° 16:00 | 8.48 | 21% | 109.1° |
| 2044-03-25 Fri | 25 | — | unknown | 20:15–21:05 (good, 0.83 h) | 72.6° 15:55 | 8.43 | 13% | 96.6° |
| 2044-03-26 Sat | 23 | — | unknown | 20:15–21:00 (good, 0.75 h) | 72.6° 15:50 | 8.37 | 7% | 83.7° |
| 2044-03-27 Sun | 21 | — | unknown | 21:20–22:00 (good, 0.67 h) | 72.5° 16:50 | 8.32 | 3% | 70.4° |
| 2044-03-28 Mon | 19 | — | unknown | 21:20–21:55 (good, 0.58 h) | 72.6° 16:45 | 8.27 | 0% | 56.8° |
| 2044-03-29 Tue | 18 | — | unknown | 21:20–21:50 (good, 0.5 h) | 72.6° 16:40 | 8.21 | 0% | 42.8° |
| 2044-03-30 Wed | 15 | — | unknown | 21:25–21:45 (good, 0.33 h) | 72.6° 16:35 | 8.16 | 3% | 28.7° |
| 2044-03-31 Thu | 12 | — | unknown | 21:25–21:40 (good, 0.25 h) | 72.6° 16:30 | 8.1 | 8% | 14.3° |
| 2044-04-01 Fri | 9 | — | unknown | 21:25–21:30 (good, 0.08 h) | 72.5° 16:30 | 8.05 | 16% | 0.8° |
| 2044-04-02 Sat | 7 | — | unknown | 21:25–22:00 (marginal, 0.58 h) | 72.6° 16:25 | 7.99 | 25% | 14.5° |
| 2044-04-03 Sun | 4 | — | unknown | 21:30–22:00 (marginal, 0.5 h) | 72.6° 16:20 | 7.94 | 36% | 28.8° |
| 2044-04-04 Mon | 3 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 72.6° 16:15 | 7.88 | 47% | 43.0° |
| 2044-04-05 Tue | 2 | — | unknown | 21:30–21:45 (marginal, 0.25 h) | 72.5° 16:10 | 7.83 | 59% | 57.0° |
| 2044-04-06 Wed | 2 | — | unknown | 21:30–21:40 (marginal, 0.17 h) | 72.6° 16:10 | 7.77 | 70% | 70.9° |
| 2044-04-07 Thu | 2 | — | unknown | 21:35–21:40 (marginal, 0.08 h) | 72.6° 16:05 | 7.71 | 79% | 84.6° |
| 2044-04-08 Fri | 2 | — | unknown | 21:35–21:40 (marginal, 0.08 h) | 72.6° 16:00 | 7.66 | 87% | 98.1° |
| 2044-04-09 Sat | 1 | — | unknown | — | 72.6° 15:55 | 7.6 | 94% | 111.4° |
| 2044-04-10 Sun | 1 | — | unknown | — | 72.5° 15:50 | 7.54 | 98% | 124.5° |
| 2044-04-11 Mon | 1 | — | unknown | — | 72.6° 15:50 | 7.49 | 100% | 137.4° |
| 2044-04-12 Tue | 1 | — | unknown | — | 72.6° 15:45 | 7.43 | 100% | 150.1° |
| 2044-04-13 Wed | 1 | — | unknown | — | 72.6° 15:40 | 7.37 | 98% | 162.6° |
| 2044-04-14 Thu | 0 | — | unknown | — | 72.6° 15:35 | 7.31 | 94% | 174.8° |
| 2044-04-15 Fri | 0 | — | unknown | — | 72.5° 15:35 | 7.26 | 88% | 173.1° |
| 2044-04-16 Sat | 0 | — | unknown | — | 72.6° 15:30 | 7.2 | 81% | 161.2° |
| 2044-04-17 Sun | 0 | — | unknown | — | 72.6° 15:25 | 7.14 | 73% | 149.3° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2044-03-19&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.