← 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. |
|---|---|---|---|---|---|---|---|---|
| 2034-03-30 Thu | 0 | — | unknown | — | 79.1° 14:25 | 8.19 | 86% | 113.4° |
| 2034-03-31 Fri | 0 | — | unknown | — | 79.1° 14:20 | 8.13 | 92% | 124.6° |
| 2034-04-01 Sat | 0 | — | unknown | — | 79.1° 14:15 | 8.08 | 97% | 135.3° |
| 2034-04-02 Sun | 0 | — | unknown | — | 79.1° 14:15 | 8.02 | 99% | 145.1° |
| 2034-04-03 Mon | 0 | — | unknown | — | 79.1° 14:10 | 7.97 | 100% | 153.2° |
| 2034-04-04 Tue | 0 | — | unknown | — | 79.1° 14:05 | 7.91 | 99% | 157.7° |
| 2034-04-05 Wed | 0 | — | unknown | — | 79.1° 14:00 | 7.86 | 96% | 156.7° |
| 2034-04-06 Thu | 0 | — | unknown | — | 79.1° 14:00 | 7.8 | 91% | 150.8° |
| 2034-04-07 Fri | 0 | — | unknown | — | 79.1° 13:55 | 7.75 | 85% | 142.2° |
| 2034-04-08 Sat | 0 | — | unknown | — | 79.1° 13:50 | 7.69 | 78% | 132.2° |
| 2034-04-09 Sun | 0 | — | unknown | — | 79.1° 13:45 | 7.63 | 70% | 121.6° |
| 2034-04-10 Mon | 0 | — | unknown | — | 79.1° 13:40 | 7.58 | 60% | 110.5° |
| 2034-04-11 Tue | 0 | — | unknown | — | 79.1° 13:40 | 7.52 | 50% | 99.0° |
| 2034-04-12 Wed | 0 | — | unknown | — | 79.1° 13:35 | 7.46 | 40% | 87.1° |
| 2034-04-13 Thu | 0 | — | unknown | — | 79.1° 13:30 | 7.4 | 30% | 74.8° |
| 2034-04-14 Fri | 0 | — | unknown | — | 79.1° 13:25 | 7.35 | 20% | 62.2° |
| 2034-04-15 Sat | 0 | — | unknown | — | 79.1° 13:20 | 7.29 | 12% | 49.6° |
| 2034-04-16 Sun | 0 | — | unknown | — | 79.1° 13:20 | 7.23 | 5% | 37.3° |
| 2034-04-17 Mon | 0 | — | unknown | — | 79.1° 13:15 | 7.17 | 1% | 26.9° |
| 2034-04-18 Tue | 0 | — | unknown | — | 79.1° 13:10 | 7.12 | 0% | 22.0° |
| 2034-04-19 Wed | 0 | — | unknown | — | 79.1° 13:05 | 7.06 | 2% | 26.1° |
| 2034-04-20 Thu | 0 | — | unknown | — | 79.1° 13:05 | 7.0 | 7% | 36.3° |
| 2034-04-21 Fri | 0 | — | unknown | — | 79.1° 13:00 | 6.94 | 14% | 48.5° |
| 2034-04-22 Sat | 0 | — | unknown | — | 79.1° 12:55 | 6.88 | 23% | 61.3° |
| 2034-04-23 Sun | 0 | — | unknown | — | 79.1° 12:50 | 6.83 | 33% | 74.1° |
| 2034-04-24 Mon | 0 | — | unknown | — | 79.1° 12:45 | 6.77 | 44% | 86.7° |
| 2034-04-25 Tue | 0 | — | unknown | — | 79.1° 12:45 | 6.71 | 55% | 98.8° |
| 2034-04-26 Wed | 0 | — | unknown | — | 79.1° 12:40 | 6.65 | 65% | 110.6° |
| 2034-04-27 Thu | 0 | — | unknown | — | 79.1° 12:35 | 6.59 | 74% | 122.0° |
| 2034-04-28 Fri | 0 | — | unknown | — | 79.1° 12:30 | 6.53 | 82% | 132.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2034-03-30&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.