← 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. |
|---|---|---|---|---|---|---|---|---|
| 2044-03-15 Tue | 30 | — | unknown | 03:45–05:00 (good, 1.25 h) | 87.2° 09:45 | 8.94 | 95% | 116.0° |
| 2044-03-16 Wed | 29 | — | unknown | 03:40–05:00 (good, 1.33 h) | 87.2° 09:40 | 8.89 | 90% | 111.3° |
| 2044-03-17 Thu | 29 | — | unknown | 03:40–04:55 (good, 1.25 h) | 87.2° 09:35 | 8.84 | 83% | 105.8° |
| 2044-03-18 Fri | 30 | — | unknown | 03:35–04:55 (good, 1.33 h) | 87.2° 09:30 | 8.79 | 75% | 99.9° |
| 2044-03-19 Sat | 31 | — | unknown | 03:30–04:55 (good, 1.42 h) | 87.2° 09:25 | 8.74 | 66% | 93.7° |
| 2044-03-20 Sun | 31 | — | unknown | 03:25–04:50 (good, 1.42 h) | 87.2° 09:25 | 8.69 | 57% | 87.4° |
| 2044-03-21 Mon | 34 | — | unknown | 03:15–04:50 (good, 1.58 h) | 87.2° 09:20 | 8.64 | 48% | 81.3° |
| 2044-03-22 Tue | 37 | — | unknown | 03:00–04:45 (good, 1.75 h) | 87.2° 09:15 | 8.58 | 38% | 75.4° |
| 2044-03-23 Wed | 42 | — | unknown | 02:55–04:45 (good, 1.83 h) | 87.2° 09:10 | 8.53 | 29% | 69.9° |
| 2044-03-24 Thu | 45 | — | unknown | 02:55–04:45 (good, 1.83 h) | 87.2° 09:10 | 8.48 | 21% | 65.1° |
| 2044-03-25 Fri | 46 | — | unknown | 02:50–04:40 (good, 1.83 h) | 87.2° 09:05 | 8.43 | 13% | 61.3° |
| 2044-03-26 Sat | 48 | — | unknown | 02:45–05:40 (good, 1.92 h) | 87.2° 10:00 | 8.37 | 7% | 58.8° |
| 2044-03-27 Sun | 49 | — | unknown | 03:40–05:40 (good, 2.0 h) | 87.2° 09:55 | 8.32 | 3% | 58.1° |
| 2044-03-28 Mon | 50 | — | unknown | 03:35–05:35 (good, 2.0 h) | 87.2° 09:50 | 8.27 | 0% | 59.3° |
| 2044-03-29 Tue | 50 | — | unknown | 03:35–05:35 (good, 2.0 h) | 87.2° 09:50 | 8.21 | 0% | 62.5° |
| 2044-03-30 Wed | 50 | — | unknown | 03:30–05:30 (good, 2.0 h) | 87.2° 09:45 | 8.16 | 3% | 67.4° |
| 2044-03-31 Thu | 52 | — | unknown | 03:25–05:30 (good, 2.08 h) | 87.2° 09:40 | 8.1 | 8% | 73.6° |
| 2044-04-01 Fri | 54 | — | unknown | 03:20–05:30 (good, 2.17 h) | 87.2° 09:35 | 8.05 | 16% | 80.7° |
| 2044-04-02 Sat | 54 | — | unknown | 03:15–05:25 (good, 2.17 h) | 87.2° 09:30 | 7.99 | 25% | 88.2° |
| 2044-04-03 Sun | 55 | — | unknown | 03:15–05:25 (good, 2.17 h) | 87.2° 09:30 | 7.94 | 36% | 95.7° |
| 2044-04-04 Mon | 54 | — | unknown | 03:15–05:20 (good, 2.08 h) | 87.2° 09:25 | 7.88 | 47% | 102.9° |
| 2044-04-05 Tue | 55 | — | unknown | 03:15–05:20 (good, 2.08 h) | 87.2° 09:20 | 7.83 | 59% | 109.5° |
| 2044-04-06 Wed | 55 | — | unknown | 03:10–05:20 (good, 2.17 h) | 87.2° 09:15 | 7.77 | 70% | 115.0° |
| 2044-04-07 Thu | 54 | — | unknown | 03:05–05:15 (good, 2.17 h) | 87.2° 09:15 | 7.71 | 79% | 119.0° |
| 2044-04-08 Fri | 50 | — | unknown | 03:05–05:15 (good, 2.17 h) | 87.2° 09:10 | 7.66 | 87% | 121.4° |
| 2044-04-09 Sat | 50 | — | unknown | 03:00–05:15 (good, 2.25 h) | 87.2° 09:05 | 7.6 | 94% | 121.8° |
| 2044-04-10 Sun | 49 | — | unknown | 03:00–05:10 (good, 2.17 h) | 87.2° 09:00 | 7.54 | 98% | 120.4° |
| 2044-04-11 Mon | 49 | — | unknown | 03:00–05:10 (good, 2.17 h) | 87.2° 08:55 | 7.49 | 100% | 117.4° |
| 2044-04-12 Tue | 46 | — | unknown | 02:55–05:05 (good, 2.17 h) | 87.2° 08:55 | 7.43 | 100% | 113.0° |
| 2044-04-13 Wed | 44 | — | unknown | 02:55–05:05 (good, 2.17 h) | 87.2° 08:50 | 7.37 | 98% | 107.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2044-03-15&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.