← 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. |
|---|---|---|---|---|---|---|---|---|
| 2030-10-26 Sat | 0 | — | unknown | — | 50.2° 10:30 | 10.28 | 0% | 29.6° |
| 2030-10-27 Sun | 0 | — | unknown | — | 50.2° 10:25 | 10.32 | 2% | 43.9° |
| 2030-10-28 Mon | 0 | — | unknown | — | 50.2° 10:20 | 10.35 | 6% | 58.5° |
| 2030-10-29 Tue | 0 | — | unknown | — | 50.2° 10:15 | 10.39 | 13% | 73.2° |
| 2030-10-30 Wed | 0 | — | unknown | — | 50.2° 10:15 | 10.43 | 22% | 87.6° |
| 2030-10-31 Thu | 0 | — | unknown | — | 50.2° 10:10 | 10.47 | 32% | 101.8° |
| 2030-11-01 Fri | 0 | — | unknown | — | 50.2° 10:05 | 10.5 | 44% | 115.7° |
| 2030-11-02 Sat | 0 | — | unknown | — | 50.2° 10:00 | 10.54 | 55% | 129.2° |
| 2030-11-03 Sun | 1 | — | unknown | — | 50.2° 09:55 | 10.57 | 65% | 142.2° |
| 2030-11-04 Mon | 1 | — | unknown | — | 50.2° 09:55 | 10.61 | 75% | 154.6° |
| 2030-11-05 Tue | 1 | — | unknown | — | 50.2° 09:50 | 10.64 | 83% | 165.7° |
| 2030-11-06 Wed | 1 | — | unknown | — | 50.2° 09:45 | 10.68 | 90% | 170.4° |
| 2030-11-07 Thu | 2 | — | unknown | 05:25–05:30 (marginal, 0.08 h) | 50.2° 09:40 | 10.71 | 95% | 162.9° |
| 2030-11-08 Fri | 3 | — | unknown | 05:20–05:30 (marginal, 0.17 h) | 50.2° 09:40 | 10.74 | 98% | 151.9° |
| 2030-11-09 Sat | 3 | — | unknown | 05:20–05:30 (marginal, 0.17 h) | 50.2° 09:35 | 10.78 | 100% | 140.3° |
| 2030-11-10 Sun | 4 | — | unknown | 05:15–05:30 (marginal, 0.25 h) | 50.2° 09:30 | 10.81 | 99% | 128.6° |
| 2030-11-11 Mon | 5 | — | unknown | 05:10–05:35 (marginal, 0.42 h) | 50.2° 09:25 | 10.84 | 97% | 116.9° |
| 2030-11-12 Tue | 4 | — | unknown | 05:05–05:35 (marginal, 0.5 h) | 50.2° 09:20 | 10.87 | 93% | 105.2° |
| 2030-11-13 Wed | 4 | — | unknown | 05:05–05:35 (marginal, 0.5 h) | 50.2° 09:20 | 10.9 | 88% | 93.5° |
| 2030-11-14 Thu | 4 | — | unknown | 05:05–05:35 (marginal, 0.5 h) | 50.2° 09:15 | 10.93 | 81% | 81.9° |
| 2030-11-15 Fri | 5 | — | unknown | 05:05–05:35 (marginal, 0.5 h) | 50.2° 09:10 | 10.96 | 73% | 70.1° |
| 2030-11-16 Sat | 6 | — | unknown | 05:00–05:40 (marginal, 0.67 h) | 50.2° 09:05 | 10.99 | 64% | 58.3° |
| 2030-11-17 Sun | 7 | — | unknown | 04:55–05:40 (marginal, 0.75 h) | 50.2° 09:00 | 11.02 | 54% | 46.3° |
| 2030-11-18 Mon | 8 | — | unknown | 04:45–05:40 (marginal, 0.92 h) | 50.2° 09:00 | 11.04 | 44% | 34.2° |
| 2030-11-19 Tue | 11 | — | unknown | 05:30–05:40 (good, 0.17 h) | 50.2° 08:55 | 11.07 | 34% | 22.1° |
| 2030-11-20 Wed | 15 | — | unknown | 05:20–05:40 (good, 0.33 h) | 50.2° 08:50 | 11.1 | 24% | 11.5° |
| 2030-11-21 Thu | 19 | — | unknown | 05:05–05:45 (good, 0.67 h) | 50.2° 08:45 | 11.12 | 16% | 11.8° |
| 2030-11-22 Fri | 22 | — | unknown | 04:55–05:45 (good, 0.83 h) | 50.2° 08:45 | 11.14 | 8% | 23.4° |
| 2030-11-23 Sat | 25 | — | unknown | 04:50–05:45 (good, 0.92 h) | 50.2° 08:40 | 11.17 | 3% | 37.3° |
| 2030-11-24 Sun | 26 | — | unknown | 04:50–05:45 (good, 0.92 h) | 50.2° 08:35 | 11.19 | 0% | 51.9° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2030-10-26&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.