← 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. |
|---|---|---|---|---|---|---|---|---|
| 2046-07-01 Sun | 0 | — | unknown | — | 72.6° 10:30 | 4.54 | 6% | 13.5° |
| 2046-07-02 Mon | 0 | — | unknown | — | 72.6° 10:25 | 4.56 | 2% | 26.9° |
| 2046-07-03 Tue | 0 | — | unknown | — | 72.6° 10:20 | 4.59 | 0% | 40.6° |
| 2046-07-04 Wed | 0 | — | unknown | — | 72.6° 10:15 | 4.61 | 1% | 54.7° |
| 2046-07-05 Thu | 0 | — | unknown | — | 72.6° 10:10 | 4.64 | 4% | 68.9° |
| 2046-07-06 Fri | 0 | — | unknown | — | 72.6° 10:10 | 4.67 | 11% | 83.3° |
| 2046-07-07 Sat | 1 | — | unknown | — | 72.6° 10:05 | 4.7 | 19% | 97.8° |
| 2046-07-08 Sun | 1 | — | unknown | — | 72.6° 10:00 | 4.74 | 29% | 112.1° |
| 2046-07-09 Mon | 1 | — | unknown | — | 72.6° 09:55 | 4.77 | 40% | 126.4° |
| 2046-07-10 Tue | 1 | — | unknown | — | 72.6° 09:55 | 4.81 | 51% | 140.6° |
| 2046-07-11 Wed | 1 | — | unknown | — | 72.6° 09:50 | 4.84 | 62% | 154.6° |
| 2046-07-12 Thu | 2 | — | unknown | 04:40–04:45 (marginal, 0.08 h) | 72.6° 09:45 | 4.88 | 73% | 168.4° |
| 2046-07-13 Fri | 2 | — | unknown | 04:35–04:45 (marginal, 0.17 h) | 72.6° 09:40 | 4.92 | 82% | 177.8° |
| 2046-07-14 Sat | 2 | — | unknown | 04:30–04:45 (marginal, 0.25 h) | 72.6° 09:35 | 4.96 | 90% | 164.5° |
| 2046-07-15 Sun | 3 | — | unknown | 04:25–04:50 (marginal, 0.42 h) | 72.6° 09:35 | 5.01 | 95% | 151.2° |
| 2046-07-16 Mon | 3 | — | unknown | 04:30–04:50 (marginal, 0.33 h) | 72.6° 09:30 | 5.05 | 99% | 138.2° |
| 2046-07-17 Tue | 4 | — | unknown | 04:30–04:50 (marginal, 0.33 h) | 72.6° 09:25 | 5.09 | 100% | 125.4° |
| 2046-07-18 Wed | 4 | — | unknown | 04:30–04:50 (marginal, 0.33 h) | 72.6° 09:20 | 5.14 | 99% | 112.8° |
| 2046-07-19 Thu | 4 | — | unknown | 03:45–04:05 (marginal, 0.33 h) | 72.6° 09:15 | 5.19 | 96% | 100.5° |
| 2046-07-20 Fri | 4 | — | unknown | 03:45–04:05 (marginal, 0.33 h) | 72.6° 09:15 | 5.23 | 92% | 88.3° |
| 2046-07-21 Sat | 5 | — | unknown | 03:45–04:10 (marginal, 0.42 h) | 72.6° 09:10 | 5.28 | 86% | 76.3° |
| 2046-07-22 Sun | 5 | — | unknown | 03:45–04:10 (marginal, 0.42 h) | 72.6° 09:05 | 5.33 | 79% | 64.4° |
| 2046-07-23 Mon | 5 | — | unknown | 03:40–04:10 (marginal, 0.5 h) | 72.6° 09:00 | 5.38 | 70% | 52.6° |
| 2046-07-24 Tue | 6 | — | unknown | 03:35–04:15 (marginal, 0.67 h) | 72.6° 09:00 | 5.43 | 62% | 40.7° |
| 2046-07-25 Wed | 8 | — | unknown | 03:30–04:15 (marginal, 0.75 h) | 72.6° 08:55 | 5.48 | 52% | 28.8° |
| 2046-07-26 Thu | 11 | — | unknown | 03:15–04:15 (marginal, 1.0 h) | 72.6° 08:50 | 5.53 | 42% | 16.7° |
| 2046-07-27 Fri | 14 | — | unknown | 04:00–04:20 (good, 0.33 h) | 72.6° 08:45 | 5.59 | 33% | 4.3° |
| 2046-07-28 Sat | 18 | — | unknown | 03:50–04:20 (good, 0.5 h) | 72.6° 08:40 | 5.64 | 23% | 8.5° |
| 2046-07-29 Sun | 22 | — | unknown | 03:40–04:20 (good, 0.67 h) | 72.6° 08:40 | 5.69 | 15% | 21.6° |
| 2046-07-30 Mon | 26 | — | unknown | 03:30–04:25 (good, 0.92 h) | 72.6° 08:35 | 5.75 | 8% | 35.1° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2046-07-01&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.