← 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. |
|---|---|---|---|---|---|---|---|---|
| 2030-07-08 Mon | 1 | — | unknown | — | 72.5° 10:00 | 4.73 | 55% | 143.3° |
| 2030-07-09 Tue | 1 | — | unknown | — | 72.5° 09:55 | 4.77 | 66% | 157.3° |
| 2030-07-10 Wed | 1 | — | unknown | — | 72.5° 09:50 | 4.8 | 77% | 171.5° |
| 2030-07-11 Thu | 2 | — | unknown | — | 72.5° 09:50 | 4.84 | 86% | 172.9° |
| 2030-07-12 Fri | 2 | — | unknown | 04:40–04:45 (marginal, 0.08 h) | 72.5° 09:45 | 4.88 | 93% | 158.5° |
| 2030-07-13 Sat | 2 | — | unknown | 04:40–04:45 (marginal, 0.08 h) | 72.5° 09:40 | 4.92 | 98% | 143.7° |
| 2030-07-14 Sun | 2 | — | unknown | 04:40–04:45 (marginal, 0.08 h) | 72.5° 09:35 | 4.96 | 100% | 128.9° |
| 2030-07-15 Mon | 2 | — | unknown | 04:40–04:50 (marginal, 0.17 h) | 72.5° 09:35 | 5.0 | 99% | 114.4° |
| 2030-07-16 Tue | 2 | — | unknown | 03:55–04:00 (marginal, 0.08 h) | 72.5° 09:30 | 5.04 | 95% | 100.1° |
| 2030-07-17 Wed | 3 | — | unknown | 03:55–04:05 (marginal, 0.17 h) | 72.5° 09:25 | 5.09 | 89% | 86.3° |
| 2030-07-18 Thu | 3 | — | unknown | 03:55–04:05 (marginal, 0.17 h) | 72.5° 09:20 | 5.13 | 82% | 72.9° |
| 2030-07-19 Fri | 3 | — | unknown | 03:55–04:05 (marginal, 0.17 h) | 72.5° 09:15 | 5.18 | 73% | 59.9° |
| 2030-07-20 Sat | 3 | — | unknown | 03:50–04:05 (marginal, 0.25 h) | 72.5° 09:15 | 5.23 | 64% | 47.3° |
| 2030-07-21 Sun | 5 | — | unknown | 03:45–04:10 (marginal, 0.42 h) | 72.5° 09:10 | 5.27 | 54% | 35.0° |
| 2030-07-22 Mon | 6 | — | unknown | 03:35–04:10 (marginal, 0.58 h) | 72.5° 09:05 | 5.32 | 44% | 23.0° |
| 2030-07-23 Tue | 8 | — | unknown | 03:30–04:10 (marginal, 0.67 h) | 72.5° 09:00 | 5.37 | 35% | 11.2° |
| 2030-07-24 Wed | 12 | — | unknown | 04:05–04:15 (good, 0.17 h) | 72.5° 08:55 | 5.42 | 26% | 2.9° |
| 2030-07-25 Thu | 15 | — | unknown | 03:55–04:15 (good, 0.33 h) | 72.5° 08:55 | 5.48 | 18% | 13.1° |
| 2030-07-26 Fri | 18 | — | unknown | 03:50–04:15 (good, 0.42 h) | 72.5° 08:50 | 5.53 | 12% | 24.8° |
| 2030-07-27 Sat | 22 | — | unknown | 03:40–04:20 (good, 0.67 h) | 72.5° 08:45 | 5.58 | 6% | 36.8° |
| 2030-07-28 Sun | 24 | — | unknown | 03:35–04:20 (good, 0.75 h) | 72.5° 08:40 | 5.63 | 2% | 49.0° |
| 2030-07-29 Mon | 25 | — | unknown | 03:30–04:20 (good, 0.83 h) | 72.5° 08:40 | 5.69 | 0% | 61.4° |
| 2030-07-30 Tue | 27 | — | unknown | 03:30–04:20 (good, 0.83 h) | 72.5° 08:35 | 5.74 | 0% | 74.0° |
| 2030-07-31 Wed | 29 | — | unknown | 03:25–04:25 (good, 1.0 h) | 72.5° 08:30 | 5.79 | 2% | 86.8° |
| 2030-08-01 Thu | 31 | — | unknown | 03:20–04:25 (good, 1.08 h) | 72.5° 08:25 | 5.85 | 7% | 99.8° |
| 2030-08-02 Fri | 33 | — | unknown | 03:15–04:25 (good, 1.17 h) | 72.5° 08:20 | 5.9 | 13% | 113.1° |
| 2030-08-03 Sat | 35 | — | unknown | 03:10–04:30 (good, 1.33 h) | 72.5° 08:20 | 5.96 | 21% | 126.5° |
| 2030-08-04 Sun | 37 | — | unknown | 03:10–04:30 (good, 1.33 h) | 72.5° 08:15 | 6.02 | 31% | 140.1° |
| 2030-08-05 Mon | 39 | — | unknown | 03:05–04:30 (good, 1.42 h) | 72.5° 08:10 | 6.07 | 41% | 153.9° |
| 2030-08-06 Tue | 41 | — | unknown | 03:00–04:35 (good, 1.58 h) | 72.5° 08:05 | 6.13 | 53% | 167.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2030-07-08&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.