← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-04-10 Sun | 0 | — | unknown | — | 79.1° 13:40 | 7.56 | 87% | 125.1° |
| 2033-04-11 Mon | 0 | — | unknown | — | 79.1° 13:35 | 7.51 | 93% | 135.6° |
| 2033-04-12 Tue | 0 | — | unknown | — | 79.1° 13:35 | 7.45 | 97% | 145.5° |
| 2033-04-13 Wed | 0 | — | unknown | — | 79.1° 13:30 | 7.39 | 99% | 153.9° |
| 2033-04-14 Thu | 0 | — | unknown | — | 79.1° 13:25 | 7.33 | 100% | 159.1° |
| 2033-04-15 Fri | 0 | — | unknown | — | 79.1° 13:20 | 7.28 | 99% | 158.4° |
| 2033-04-16 Sat | 0 | — | unknown | — | 79.1° 13:15 | 7.22 | 96% | 152.0° |
| 2033-04-17 Sun | 0 | — | unknown | — | 79.1° 13:15 | 7.16 | 91% | 142.6° |
| 2033-04-18 Mon | 0 | — | unknown | — | 79.1° 13:10 | 7.1 | 84% | 131.9° |
| 2033-04-19 Tue | 0 | — | unknown | — | 79.1° 13:05 | 7.04 | 76% | 120.4° |
| 2033-04-20 Wed | 0 | — | unknown | — | 79.1° 13:00 | 6.99 | 67% | 108.4° |
| 2033-04-21 Thu | 0 | — | unknown | — | 79.1° 13:00 | 6.93 | 56% | 95.9° |
| 2033-04-22 Fri | 0 | — | unknown | — | 79.1° 12:55 | 6.87 | 45% | 83.2° |
| 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° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-04-10&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.