← 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. |
|---|---|---|---|---|---|---|---|---|
| 2036-08-20 Wed | 1 | — | unknown | — | 42.9° 09:00 | 6.96 | 1% | 59.1° |
| 2036-08-21 Thu | 1 | — | unknown | — | 42.9° 08:55 | 7.02 | 0% | 72.6° |
| 2036-08-22 Fri | 1 | — | unknown | — | 42.9° 08:50 | 7.08 | 2% | 86.3° |
| 2036-08-23 Sat | 2 | — | unknown | 05:30–05:35 (marginal, 0.08 h) | 42.9° 08:45 | 7.13 | 7% | 99.8° |
| 2036-08-24 Sun | 3 | — | unknown | 05:30–05:40 (marginal, 0.17 h) | 42.9° 08:40 | 7.19 | 14% | 112.8° |
| 2036-08-25 Mon | 4 | — | unknown | 05:25–05:40 (marginal, 0.25 h) | 42.9° 08:40 | 7.25 | 23% | 125.1° |
| 2036-08-26 Tue | 4 | — | unknown | 04:50–05:05 (marginal, 0.25 h) | 42.9° 08:35 | 7.31 | 33% | 136.4° |
| 2036-08-27 Wed | 5 | — | unknown | 04:45–05:05 (marginal, 0.33 h) | 42.9° 08:30 | 7.36 | 43% | 146.1° |
| 2036-08-28 Thu | 7 | — | unknown | 05:10–05:45 (marginal, 0.58 h) | 42.9° 08:25 | 7.42 | 53% | 153.1° |
| 2036-08-29 Fri | 9 | — | unknown | 04:35–05:45 (marginal, 1.17 h) | 42.9° 08:20 | 7.48 | 63% | 155.6° |
| 2036-08-30 Sat | 9 | — | unknown | 05:05–05:10 (good, 0.08 h) | 42.9° 08:20 | 7.53 | 72% | 152.7° |
| 2036-08-31 Sun | 10 | — | unknown | 05:00–05:10 (good, 0.17 h) | 42.9° 08:15 | 7.59 | 80% | 145.8° |
| 2036-09-01 Mon | 13 | — | unknown | 04:55–05:15 (good, 0.33 h) | 42.9° 08:10 | 7.64 | 87% | 137.0° |
| 2036-09-02 Tue | 15 | — | unknown | 04:50–05:15 (good, 0.42 h) | 42.9° 08:05 | 7.7 | 93% | 127.2° |
| 2036-09-03 Wed | 14 | — | unknown | 05:00–05:15 (good, 0.25 h) | 42.9° 08:00 | 7.75 | 97% | 116.8° |
| 2036-09-04 Thu | 13 | — | unknown | 05:00–05:15 (good, 0.25 h) | 42.9° 08:00 | 7.81 | 99% | 106.2° |
| 2036-09-05 Fri | 12 | — | unknown | 05:10–05:20 (good, 0.17 h) | 42.9° 07:55 | 7.86 | 100% | 95.3° |
| 2036-09-06 Sat | 11 | — | unknown | 04:15–05:20 (marginal, 1.08 h) | 42.9° 07:50 | 7.92 | 99% | 84.3° |
| 2036-09-07 Sun | 9 | — | unknown | 04:15–05:20 (marginal, 1.08 h) | 42.9° 07:45 | 7.97 | 96% | 73.2° |
| 2036-09-08 Mon | 7 | — | unknown | 04:20–05:20 (marginal, 1.0 h) | 42.9° 07:45 | 8.03 | 91% | 62.1° |
| 2036-09-09 Tue | 7 | — | unknown | 04:25–05:25 (marginal, 1.0 h) | 42.9° 07:40 | 8.08 | 84% | 51.2° |
| 2036-09-10 Wed | 7 | — | unknown | 04:20–05:25 (marginal, 1.08 h) | 42.9° 07:35 | 8.14 | 76% | 40.7° |
| 2036-09-11 Thu | 8 | — | unknown | 04:10–05:25 (marginal, 1.25 h) | 42.9° 07:30 | 8.19 | 66% | 31.6° |
| 2036-09-12 Fri | 11 | — | unknown | 03:55–05:25 (marginal, 1.5 h) | 42.9° 07:25 | 8.24 | 56% | 25.4° |
| 2036-09-13 Sat | 16 | — | unknown | 03:40–05:30 (marginal, 1.83 h) | 42.9° 07:25 | 8.3 | 44% | 25.2° |
| 2036-09-14 Sun | 22 | — | unknown | 04:30–05:30 (good, 1.0 h) | 42.9° 07:20 | 8.35 | 34% | 31.4° |
| 2036-09-15 Mon | 28 | — | unknown | 04:15–05:30 (good, 1.25 h) | 42.9° 07:15 | 8.4 | 23% | 41.6° |
| 2036-09-16 Tue | 34 | — | unknown | 04:00–05:30 (good, 1.5 h) | 42.9° 07:10 | 8.45 | 14% | 53.6° |
| 2036-09-17 Wed | 39 | — | unknown | 03:55–05:35 (good, 1.67 h) | 42.9° 07:05 | 8.51 | 7% | 66.7° |
| 2036-09-18 Thu | 42 | — | unknown | 03:50–05:35 (good, 1.75 h) | 42.9° 07:05 | 8.56 | 2% | 80.1° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-08-20&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.