← 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. |
|---|---|---|---|---|---|---|---|---|
| 2046-08-21 Tue | 0 | — | unknown | — | 42.9° 08:55 | 7.0 | 76% | 63.3° |
| 2046-08-22 Wed | 0 | — | unknown | — | 42.9° 08:50 | 7.05 | 68% | 54.0° |
| 2046-08-23 Thu | 1 | — | unknown | — | 42.9° 08:50 | 7.11 | 58% | 45.4° |
| 2046-08-24 Fri | 1 | — | unknown | — | 42.9° 08:45 | 7.17 | 48% | 38.0° |
| 2046-08-25 Sat | 2 | — | unknown | 04:55–05:05 (marginal, 0.17 h) | 42.9° 08:40 | 7.23 | 38% | 33.2° |
| 2046-08-26 Sun | 3 | — | unknown | 04:50–05:05 (marginal, 0.25 h) | 42.9° 08:35 | 7.28 | 28% | 32.3° |
| 2046-08-27 Mon | 4 | — | unknown | 04:45–05:05 (marginal, 0.33 h) | 42.9° 08:30 | 7.34 | 19% | 36.1° |
| 2046-08-28 Tue | 5 | — | unknown | 04:45–05:05 (marginal, 0.33 h) | 42.9° 08:30 | 7.4 | 11% | 43.7° |
| 2046-08-29 Wed | 8 | — | unknown | 04:40–05:45 (marginal, 1.08 h) | 42.9° 08:25 | 7.45 | 5% | 53.9° |
| 2046-08-30 Thu | 9 | — | unknown | 05:05–05:10 (good, 0.08 h) | 42.9° 08:20 | 7.51 | 1% | 65.5° |
| 2046-08-31 Fri | 10 | — | unknown | 05:00–05:10 (good, 0.17 h) | 42.9° 08:15 | 7.56 | 0% | 78.0° |
| 2046-09-01 Sat | 12 | — | unknown | 05:00–05:10 (good, 0.17 h) | 42.9° 08:15 | 7.62 | 2% | 90.8° |
| 2046-09-02 Sun | 14 | — | unknown | 04:55–05:15 (good, 0.33 h) | 42.9° 08:10 | 7.68 | 7% | 103.6° |
| 2046-09-03 Mon | 15 | — | unknown | 04:50–05:15 (good, 0.42 h) | 42.9° 08:05 | 7.73 | 15% | 115.9° |
| 2046-09-04 Tue | 17 | — | unknown | 04:45–05:15 (good, 0.5 h) | 42.9° 08:00 | 7.79 | 24% | 127.2° |
| 2046-09-05 Wed | 20 | — | unknown | 04:45–05:20 (good, 0.58 h) | 42.9° 07:55 | 7.84 | 34% | 137.1° |
| 2046-09-06 Thu | 21 | — | unknown | 04:40–05:20 (good, 0.67 h) | 42.9° 07:55 | 7.9 | 45% | 144.4° |
| 2046-09-07 Fri | 23 | — | unknown | 04:35–05:20 (good, 0.75 h) | 42.9° 07:50 | 7.95 | 56% | 147.9° |
| 2046-09-08 Sat | 24 | — | unknown | 04:30–05:20 (good, 0.83 h) | 42.9° 07:45 | 8.01 | 66% | 146.7° |
| 2046-09-09 Sun | 26 | — | unknown | 04:25–05:25 (good, 1.0 h) | 42.9° 07:40 | 8.06 | 75% | 141.6° |
| 2046-09-10 Mon | 28 | — | unknown | 04:25–05:25 (good, 1.0 h) | 42.9° 07:35 | 8.11 | 83% | 134.0° |
| 2046-09-11 Tue | 29 | — | unknown | 04:20–05:25 (good, 1.08 h) | 42.9° 07:35 | 8.17 | 90% | 125.2° |
| 2046-09-12 Wed | 29 | — | unknown | 04:25–05:25 (good, 1.0 h) | 42.9° 07:30 | 8.22 | 95% | 115.6° |
| 2046-09-13 Thu | 24 | — | unknown | 04:30–05:30 (good, 1.0 h) | 42.9° 07:25 | 8.27 | 98% | 105.7° |
| 2046-09-14 Fri | 21 | — | unknown | 04:40–05:30 (good, 0.83 h) | 42.9° 07:20 | 8.33 | 100% | 95.7° |
| 2046-09-15 Sat | 18 | — | unknown | 03:40–05:30 (marginal, 1.83 h) | 42.9° 07:15 | 8.38 | 100% | 85.6° |
| 2046-09-16 Sun | 14 | — | unknown | 03:45–05:30 (marginal, 1.75 h) | 42.9° 07:15 | 8.43 | 97% | 75.7° |
| 2046-09-17 Mon | 12 | — | unknown | 03:50–05:35 (marginal, 1.75 h) | 42.9° 07:10 | 8.49 | 94% | 65.9° |
| 2046-09-18 Tue | 10 | — | unknown | 03:55–05:35 (marginal, 1.67 h) | 42.9° 07:05 | 8.54 | 88% | 56.4° |
| 2046-09-19 Wed | 10 | — | unknown | 03:55–05:35 (marginal, 1.67 h) | 42.9° 07:00 | 8.59 | 82% | 47.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2046-08-21&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.