← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-04-23 Sat | 0 | — | unknown | — | 79.1° 12:50 | 6.81 | 34% | 70.1° |
| 2033-04-24 Sun | 0 | — | unknown | — | 79.1° 12:45 | 6.75 | 24% | 56.9° |
| 2033-04-25 Mon | 0 | — | unknown | — | 79.1° 12:40 | 6.69 | 14% | 43.9° |
| 2033-04-26 Tue | 0 | — | unknown | — | 79.1° 12:40 | 6.64 | 7% | 31.7° |
| 2033-04-27 Wed | 0 | — | unknown | — | 79.1° 12:35 | 6.58 | 2% | 22.6° |
| 2033-04-28 Thu | 0 | — | unknown | — | 79.1° 12:30 | 6.52 | 0% | 21.0° |
| 2033-04-29 Fri | 0 | — | unknown | — | 79.1° 12:25 | 6.46 | 1% | 28.1° |
| 2033-04-30 Sat | 0 | — | unknown | — | 79.1° 12:20 | 6.4 | 5% | 39.2° |
| 2033-05-01 Sun | 0 | — | unknown | — | 79.1° 12:20 | 6.35 | 11% | 51.4° |
| 2033-05-02 Mon | 0 | — | unknown | — | 79.1° 12:15 | 6.29 | 18% | 63.8° |
| 2033-05-03 Tue | 0 | — | unknown | — | 79.1° 12:10 | 6.23 | 27% | 76.1° |
| 2033-05-04 Wed | 0 | — | unknown | — | 79.1° 12:05 | 6.17 | 37% | 88.0° |
| 2033-05-05 Thu | 0 | — | unknown | — | 79.1° 12:00 | 6.12 | 46% | 99.6° |
| 2033-05-06 Fri | 0 | — | unknown | — | 79.1° 11:55 | 6.06 | 56% | 110.9° |
| 2033-05-07 Sat | 0 | — | unknown | — | 79.1° 11:50 | 6.0 | 66% | 122.0° |
| 2033-05-08 Sun | 0 | — | unknown | — | 79.1° 11:45 | 5.95 | 74% | 132.6° |
| 2033-05-09 Mon | 0 | — | unknown | — | 79.1° 11:45 | 5.89 | 82% | 142.7° |
| 2033-05-10 Tue | 0 | — | unknown | — | 79.1° 11:40 | 5.83 | 89% | 151.7° |
| 2033-05-11 Wed | 0 | — | unknown | — | 79.1° 11:35 | 5.78 | 94% | 158.1° |
| 2033-05-12 Thu | 0 | — | unknown | — | 79.1° 11:30 | 5.72 | 98% | 159.2° |
| 2033-05-13 Fri | 0 | — | unknown | — | 79.1° 11:25 | 5.67 | 100% | 154.1° |
| 2033-05-14 Sat | 0 | — | unknown | — | 79.1° 11:25 | 5.62 | 100% | 145.3° |
| 2033-05-15 Sun | 0 | — | unknown | — | 79.1° 11:20 | 5.56 | 98% | 134.7° |
| 2033-05-16 Mon | 0 | — | unknown | — | 79.1° 11:15 | 5.51 | 94% | 123.2° |
| 2033-05-17 Tue | 0 | — | unknown | — | 79.1° 11:10 | 5.46 | 87% | 111.2° |
| 2033-05-18 Wed | 0 | — | unknown | — | 79.1° 11:10 | 5.41 | 80% | 98.8° |
| 2033-05-19 Thu | 0 | — | unknown | — | 79.1° 11:05 | 5.35 | 70% | 86.2° |
| 2033-05-20 Fri | 0 | — | unknown | — | 79.1° 11:00 | 5.3 | 60% | 73.4° |
| 2033-05-21 Sat | 0 | — | unknown | — | 79.1° 10:55 | 5.26 | 48% | 60.5° |
| 2033-05-22 Sun | 0 | — | unknown | — | 79.1° 10:50 | 5.21 | 37% | 47.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-04-23&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.