← 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. |
|---|---|---|---|---|---|---|---|---|
| 2036-06-06 Fri | 2 | — | unknown | — | 79.1° 09:50 | 4.62 | 96% | 148.1° |
| 2036-06-07 Sat | 2 | — | unknown | — | 79.1° 09:50 | 4.59 | 99% | 139.0° |
| 2036-06-08 Sun | 2 | — | unknown | 04:25–04:30 (marginal, 0.08 h) | 79.2° 09:45 | 4.57 | 100% | 128.8° |
| 2036-06-09 Mon | 2 | — | unknown | 04:25–04:30 (marginal, 0.08 h) | 79.2° 09:40 | 4.54 | 99% | 118.2° |
| 2036-06-10 Tue | 2 | — | unknown | 04:25–04:30 (marginal, 0.08 h) | 79.2° 09:35 | 4.52 | 96% | 107.4° |
| 2036-06-11 Wed | 2 | — | unknown | 03:35–03:40 (marginal, 0.08 h) | 79.1° 09:30 | 4.5 | 91% | 96.5° |
| 2036-06-12 Thu | 3 | — | unknown | 03:30–03:40 (marginal, 0.17 h) | 79.1° 09:30 | 4.49 | 85% | 85.7° |
| 2036-06-13 Fri | 3 | — | unknown | 03:30–03:40 (marginal, 0.17 h) | 79.2° 09:25 | 4.47 | 78% | 74.9° |
| 2036-06-14 Sat | 3 | — | unknown | 03:25–03:40 (marginal, 0.25 h) | 79.2° 09:20 | 4.46 | 70% | 64.3° |
| 2036-06-15 Sun | 4 | — | unknown | 03:20–03:40 (marginal, 0.33 h) | 79.1° 09:15 | 4.45 | 61% | 53.8° |
| 2036-06-16 Mon | 5 | — | unknown | 03:15–03:40 (marginal, 0.42 h) | 79.1° 09:15 | 4.44 | 51% | 43.7° |
| 2036-06-17 Tue | 6 | — | unknown | 03:15–03:40 (marginal, 0.42 h) | 79.1° 09:10 | 4.43 | 41% | 34.4° |
| 2036-06-18 Wed | 7 | — | unknown | 03:10–03:40 (marginal, 0.5 h) | 79.2° 09:05 | 4.43 | 31% | 27.1° |
| 2036-06-19 Thu | 9 | — | unknown | 03:05–04:30 (marginal, 1.42 h) | 79.2° 09:00 | 4.42 | 22% | 24.3° |
| 2036-06-20 Fri | 13 | — | unknown | 03:30–03:40 (good, 0.17 h) | 79.1° 08:55 | 4.42 | 14% | 28.0° |
| 2036-06-21 Sat | 14 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:55 | 4.42 | 7% | 36.6° |
| 2036-06-22 Sun | 15 | — | unknown | 03:20–03:40 (good, 0.33 h) | 79.2° 08:50 | 4.43 | 2% | 47.9° |
| 2036-06-23 Mon | 17 | — | unknown | 03:20–03:40 (good, 0.33 h) | 79.2° 08:45 | 4.43 | 0% | 60.6° |
| 2036-06-24 Tue | 19 | — | unknown | 03:15–03:40 (good, 0.42 h) | 79.2° 08:40 | 4.44 | 1% | 74.0° |
| 2036-06-25 Wed | 21 | — | unknown | 03:10–03:40 (good, 0.5 h) | 79.1° 08:35 | 4.45 | 5% | 87.6° |
| 2036-06-26 Thu | 23 | — | unknown | 03:05–03:40 (good, 0.58 h) | 79.1° 08:35 | 4.46 | 11% | 101.2° |
| 2036-06-27 Fri | 24 | — | unknown | 03:00–03:40 (good, 0.67 h) | 79.2° 08:30 | 4.48 | 20% | 114.5° |
| 2036-06-28 Sat | 25 | — | unknown | 03:00–03:40 (good, 0.67 h) | 79.2° 08:25 | 4.49 | 30% | 127.1° |
| 2036-06-29 Sun | 28 | — | unknown | 02:55–03:45 (good, 0.83 h) | 79.1° 08:20 | 4.51 | 41% | 138.7° |
| 2036-06-30 Mon | 29 | — | unknown | 02:50–03:45 (good, 0.92 h) | 79.1° 08:20 | 4.53 | 52% | 148.4° |
| 2036-07-01 Tue | 31 | — | unknown | 02:45–03:45 (good, 1.0 h) | 79.1° 08:15 | 4.55 | 63% | 154.6° |
| 2036-07-02 Wed | 31 | — | unknown | 02:40–03:45 (good, 1.08 h) | 79.2° 08:10 | 4.57 | 72% | 155.0° |
| 2036-07-03 Thu | 33 | — | unknown | 02:45–03:45 (good, 1.0 h) | 79.2° 08:05 | 4.6 | 81% | 149.7° |
| 2036-07-04 Fri | 33 | — | unknown | 02:40–03:45 (good, 1.08 h) | 79.1° 08:00 | 4.63 | 88% | 141.3° |
| 2036-07-05 Sat | 32 | — | unknown | 02:40–03:50 (good, 1.17 h) | 79.1° 08:00 | 4.65 | 94% | 131.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-06-06&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.