← 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. |
|---|---|---|---|---|---|---|---|---|
| 2044-07-06 Wed | 0 | — | unknown | — | 72.6° 10:05 | 4.69 | 90% | 170.7° |
| 2044-07-07 Thu | 1 | — | unknown | — | 72.5° 10:05 | 4.72 | 95% | 158.8° |
| 2044-07-08 Fri | 1 | — | unknown | — | 72.6° 10:00 | 4.75 | 98% | 147.0° |
| 2044-07-09 Sat | 1 | — | unknown | — | 72.6° 09:55 | 4.79 | 100% | 135.2° |
| 2044-07-10 Sun | 1 | — | unknown | — | 72.6° 09:50 | 4.82 | 100% | 123.3° |
| 2044-07-11 Mon | 1 | — | unknown | — | 72.6° 09:45 | 4.86 | 97% | 111.3° |
| 2044-07-12 Tue | 1 | — | unknown | — | 72.6° 09:45 | 4.9 | 94% | 99.3° |
| 2044-07-13 Wed | 1 | — | unknown | — | 72.6° 09:40 | 4.94 | 88% | 87.0° |
| 2044-07-14 Thu | 1 | — | unknown | — | 72.6° 09:35 | 4.98 | 81% | 74.6° |
| 2044-07-15 Fri | 1 | — | unknown | — | 72.6° 09:30 | 5.03 | 72% | 62.0° |
| 2044-07-16 Sat | 2 | — | unknown | — | 72.6° 09:25 | 5.07 | 62% | 49.2° |
| 2044-07-17 Sun | 2 | — | unknown | 03:55–04:05 (marginal, 0.17 h) | 72.6° 09:25 | 5.11 | 52% | 36.0° |
| 2044-07-18 Mon | 4 | — | unknown | 03:45–04:05 (marginal, 0.33 h) | 72.6° 09:20 | 5.16 | 41% | 22.4° |
| 2044-07-19 Tue | 5 | — | unknown | 03:40–04:05 (marginal, 0.42 h) | 72.6° 09:15 | 5.21 | 30% | 8.5° |
| 2044-07-20 Wed | 8 | — | unknown | 03:40–04:10 (marginal, 0.5 h) | 72.6° 09:10 | 5.26 | 20% | 6.0° |
| 2044-07-21 Thu | 10 | — | unknown | 04:05–04:10 (good, 0.08 h) | 72.5° 09:10 | 5.3 | 12% | 20.7° |
| 2044-07-22 Fri | 12 | — | unknown | 04:00–04:10 (good, 0.17 h) | 72.6° 09:05 | 5.35 | 5% | 35.7° |
| 2044-07-23 Sat | 15 | — | unknown | 03:55–04:10 (good, 0.25 h) | 72.6° 09:00 | 5.4 | 1% | 50.8° |
| 2044-07-24 Sun | 18 | — | unknown | 03:50–04:15 (good, 0.42 h) | 72.6° 08:55 | 5.45 | 0% | 65.9° |
| 2044-07-25 Mon | 19 | — | unknown | 03:45–04:15 (good, 0.5 h) | 72.6° 08:50 | 5.51 | 2% | 80.8° |
| 2044-07-26 Tue | 21 | — | unknown | 03:40–04:15 (good, 0.58 h) | 72.6° 08:50 | 5.56 | 7% | 95.4° |
| 2044-07-27 Wed | 24 | — | unknown | 03:40–04:20 (good, 0.67 h) | 72.6° 08:45 | 5.61 | 14% | 109.6° |
| 2044-07-28 Thu | 25 | — | unknown | 03:35–04:20 (good, 0.75 h) | 72.6° 08:40 | 5.67 | 22% | 123.3° |
| 2044-07-29 Fri | 26 | — | unknown | 03:30–04:20 (good, 0.83 h) | 72.6° 08:35 | 5.72 | 32% | 136.6° |
| 2044-07-30 Sat | 28 | — | unknown | 03:25–04:25 (good, 1.0 h) | 72.6° 08:30 | 5.77 | 42% | 149.4° |
| 2044-07-31 Sun | 30 | — | unknown | 03:20–04:25 (good, 1.08 h) | 72.6° 08:30 | 5.83 | 52% | 161.9° |
| 2044-08-01 Mon | 32 | — | unknown | 03:20–04:25 (good, 1.08 h) | 72.6° 08:25 | 5.88 | 62% | 174.0° |
| 2044-08-02 Tue | 35 | — | unknown | 03:15–04:30 (good, 1.25 h) | 72.6° 08:20 | 5.94 | 71% | 173.8° |
| 2044-08-03 Wed | 36 | — | unknown | 03:10–04:30 (good, 1.33 h) | 72.6° 08:15 | 5.99 | 79% | 161.9° |
| 2044-08-04 Thu | 38 | — | unknown | 03:05–04:30 (good, 1.42 h) | 72.5° 08:10 | 6.05 | 86% | 150.1° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2044-07-06&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.