← 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. |
|---|---|---|---|---|---|---|---|---|
| 2042-06-04 Wed | 18 | — | unknown | 03:20–03:45 (good, 0.42 h) | 89.7° 09:10 | 4.69 | 99% | 118.0° |
| 2042-06-05 Thu | 17 | — | unknown | 03:20–03:40 (good, 0.33 h) | 89.6° 09:05 | 4.66 | 95% | 107.4° |
| 2042-06-06 Fri | 16 | — | unknown | 03:25–03:40 (good, 0.25 h) | 89.6° 09:05 | 4.63 | 90% | 96.4° |
| 2042-06-07 Sat | 16 | — | unknown | 03:25–03:40 (good, 0.25 h) | 89.7° 09:00 | 4.6 | 82% | 85.1° |
| 2042-06-08 Sun | 16 | — | unknown | 03:20–03:40 (good, 0.33 h) | 89.8° 08:55 | 4.58 | 73% | 73.7° |
| 2042-06-09 Mon | 17 | — | unknown | 03:15–03:40 (good, 0.42 h) | 89.7° 08:50 | 4.55 | 62% | 62.5° |
| 2042-06-10 Tue | 19 | — | unknown | 03:05–03:40 (good, 0.58 h) | 89.5° 08:45 | 4.53 | 51% | 51.9° |
| 2042-06-11 Wed | 22 | — | unknown | 02:55–03:40 (good, 0.75 h) | 89.6° 08:45 | 4.51 | 40% | 42.5° |
| 2042-06-12 Thu | 26 | — | unknown | 02:35–03:40 (good, 1.08 h) | 89.8° 08:40 | 4.49 | 29% | 35.6° |
| 2042-06-13 Fri | 31 | — | unknown | 02:30–03:40 (good, 1.17 h) | 89.8° 08:35 | 4.48 | 19% | 33.0° |
| 2042-06-14 Sat | 35 | — | unknown | 02:30–03:40 (good, 1.17 h) | 89.7° 08:30 | 4.46 | 11% | 35.7° |
| 2042-06-15 Sun | 37 | — | unknown | 02:25–03:40 (good, 1.25 h) | 89.5° 08:30 | 4.45 | 5% | 42.8° |
| 2042-06-16 Mon | 38 | — | unknown | 02:20–03:40 (good, 1.33 h) | 89.7° 08:25 | 4.44 | 1% | 52.3° |
| 2042-06-17 Tue | 39 | — | unknown | 02:15–03:40 (good, 1.42 h) | 89.8° 08:20 | 4.43 | 0% | 62.9° |
| 2042-06-18 Wed | 41 | — | unknown | 02:10–03:40 (good, 1.5 h) | 89.8° 08:15 | 4.43 | 2% | 74.0° |
| 2042-06-19 Thu | 42 | — | unknown | 02:10–03:40 (good, 1.5 h) | 89.6° 08:10 | 4.42 | 6% | 85.2° |
| 2042-06-20 Fri | 44 | — | unknown | 02:05–03:40 (good, 1.58 h) | 89.6° 08:10 | 4.42 | 11% | 96.1° |
| 2042-06-21 Sat | 46 | — | unknown | 02:00–03:40 (good, 1.67 h) | 89.7° 08:05 | 4.42 | 18% | 106.6° |
| 2042-06-22 Sun | 47 | — | unknown | 01:55–03:40 (good, 1.75 h) | 89.8° 08:00 | 4.42 | 26% | 116.6° |
| 2042-06-23 Mon | 48 | — | unknown | 01:50–03:40 (good, 1.83 h) | 89.7° 07:55 | 4.43 | 36% | 126.0° |
| 2042-06-24 Tue | 50 | — | unknown | 01:50–03:40 (good, 1.83 h) | 89.5° 07:50 | 4.44 | 45% | 134.4° |
| 2042-06-25 Wed | 52 | — | unknown | 01:45–03:40 (good, 1.92 h) | 89.6° 07:50 | 4.44 | 54% | 141.2° |
| 2042-06-26 Thu | 54 | — | unknown | 01:45–03:40 (good, 1.92 h) | 89.8° 07:45 | 4.46 | 64% | 145.8° |
| 2042-06-27 Fri | 55 | — | unknown | 01:45–03:40 (good, 1.92 h) | 89.8° 07:40 | 4.47 | 72% | 147.1° |
| 2042-06-28 Sat | 56 | — | unknown | 01:40–03:40 (good, 2.0 h) | 89.7° 07:35 | 4.48 | 81% | 144.5° |
| 2042-06-29 Sun | 57 | — | unknown | 01:40–03:40 (good, 2.0 h) | 89.5° 07:35 | 4.5 | 88% | 138.8° |
| 2042-06-30 Mon | 58 | — | unknown | 01:35–03:45 (good, 2.17 h) | 89.7° 07:30 | 4.52 | 94% | 130.7° |
| 2042-07-01 Tue | 53 | — | unknown | 01:30–03:45 (good, 2.25 h) | 89.8° 07:25 | 4.54 | 98% | 121.2° |
| 2042-07-02 Wed | 49 | — | unknown | 01:35–03:45 (good, 2.17 h) | 89.8° 07:20 | 4.56 | 100% | 110.7° |
| 2042-07-03 Thu | 43 | — | unknown | 01:35–03:45 (good, 2.17 h) | 89.6° 07:15 | 4.59 | 99% | 99.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2042-06-04&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.