← 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. |
|---|---|---|---|---|---|---|---|---|
| 2034-04-01 Sat | 9 | — | unknown | 20:50–22:10 (marginal, 1.33 h) | 72.5° 16:30 | 8.08 | 97% | 111.9° |
| 2034-04-02 Sun | 8 | — | unknown | 20:50–22:05 (marginal, 1.25 h) | 72.5° 16:25 | 8.02 | 99% | 123.8° |
| 2034-04-03 Mon | 7 | — | unknown | 20:55–22:00 (marginal, 1.08 h) | 72.5° 16:20 | 7.97 | 100% | 135.6° |
| 2034-04-04 Tue | 6 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 72.5° 16:20 | 7.91 | 99% | 147.2° |
| 2034-04-05 Wed | 6 | — | unknown | 20:55–21:25 (marginal, 0.5 h) | 72.5° 16:15 | 7.86 | 96% | 158.4° |
| 2034-04-06 Thu | 5 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 72.5° 16:10 | 7.8 | 91% | 168.2° |
| 2034-04-07 Fri | 4 | — | unknown | 21:00–21:15 (marginal, 0.25 h) | 72.5° 16:05 | 7.75 | 85% | 170.7° |
| 2034-04-08 Sat | 3 | — | unknown | 21:00–21:15 (marginal, 0.25 h) | 72.5° 16:00 | 7.69 | 78% | 162.3° |
| 2034-04-09 Sun | 2 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 72.5° 16:00 | 7.63 | 70% | 151.2° |
| 2034-04-10 Mon | 2 | — | unknown | 21:00–21:05 (marginal, 0.08 h) | 72.5° 15:55 | 7.58 | 60% | 139.4° |
| 2034-04-11 Tue | 1 | — | unknown | — | 72.5° 15:50 | 7.52 | 50% | 127.1° |
| 2034-04-12 Wed | 1 | — | unknown | — | 72.5° 15:45 | 7.46 | 40% | 114.5° |
| 2034-04-13 Thu | 1 | — | unknown | — | 72.5° 15:40 | 7.4 | 30% | 101.4° |
| 2034-04-14 Fri | 1 | — | unknown | — | 72.5° 15:40 | 7.35 | 20% | 87.8° |
| 2034-04-15 Sat | 0 | — | unknown | — | 72.5° 15:35 | 7.29 | 12% | 73.7° |
| 2034-04-16 Sun | 0 | — | unknown | — | 72.5° 15:30 | 7.23 | 5% | 59.2° |
| 2034-04-17 Mon | 0 | — | unknown | — | 72.5° 15:25 | 7.17 | 1% | 44.5° |
| 2034-04-18 Tue | 0 | — | unknown | — | 72.5° 15:25 | 7.12 | 0% | 29.8° |
| 2034-04-19 Wed | 0 | — | unknown | — | 72.5° 15:20 | 7.06 | 2% | 15.8° |
| 2034-04-20 Thu | 0 | — | unknown | — | 72.5° 15:15 | 7.0 | 7% | 8.7° |
| 2034-04-21 Fri | 0 | — | unknown | — | 72.5° 15:10 | 6.94 | 14% | 18.5° |
| 2034-04-22 Sat | 0 | — | unknown | — | 72.5° 15:05 | 6.88 | 23% | 32.0° |
| 2034-04-23 Sun | 0 | — | unknown | — | 72.5° 15:05 | 6.83 | 33% | 45.6° |
| 2034-04-24 Mon | 0 | — | unknown | — | 72.5° 15:00 | 6.77 | 44% | 58.9° |
| 2034-04-25 Tue | 0 | — | unknown | — | 72.5° 14:55 | 6.71 | 55% | 71.8° |
| 2034-04-26 Wed | 0 | — | unknown | — | 72.5° 14:50 | 6.65 | 65% | 84.5° |
| 2034-04-27 Thu | 0 | — | unknown | — | 72.5° 14:45 | 6.59 | 74% | 96.8° |
| 2034-04-28 Fri | 0 | — | unknown | — | 72.5° 14:45 | 6.53 | 82% | 108.9° |
| 2034-04-29 Sat | 0 | — | unknown | — | 72.5° 14:40 | 6.48 | 89% | 120.9° |
| 2034-04-30 Sun | 0 | — | unknown | — | 72.5° 14:35 | 6.42 | 94% | 132.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2034-04-01&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.