← 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. |
|---|---|---|---|---|---|---|---|---|
| 2035-04-01 Sun | 0 | — | unknown | — | 79.1° 14:20 | 8.09 | 41% | 98.5° |
| 2035-04-02 Mon | 0 | — | unknown | — | 79.1° 14:15 | 8.04 | 31% | 87.3° |
| 2035-04-03 Tue | 0 | — | unknown | — | 79.1° 14:10 | 7.98 | 22% | 75.8° |
| 2035-04-04 Wed | 0 | — | unknown | — | 79.1° 14:05 | 7.93 | 14% | 64.2° |
| 2035-04-05 Thu | 0 | — | unknown | — | 79.1° 14:05 | 7.87 | 8% | 52.5° |
| 2035-04-06 Fri | 0 | — | unknown | — | 79.1° 14:00 | 7.82 | 3% | 41.0° |
| 2035-04-07 Sat | 0 | — | unknown | — | 79.1° 13:55 | 7.76 | 0% | 30.8° |
| 2035-04-08 Sun | 0 | — | unknown | — | 79.1° 13:50 | 7.7 | 0% | 24.1° |
| 2035-04-09 Mon | 0 | — | unknown | — | 79.1° 13:45 | 7.65 | 3% | 24.5° |
| 2035-04-10 Tue | 0 | — | unknown | — | 79.1° 13:45 | 7.59 | 8% | 32.0° |
| 2035-04-11 Wed | 0 | — | unknown | — | 79.1° 13:40 | 7.53 | 16% | 43.0° |
| 2035-04-12 Thu | 0 | — | unknown | — | 79.1° 13:35 | 7.48 | 26% | 55.4° |
| 2035-04-13 Fri | 0 | — | unknown | — | 79.1° 13:30 | 7.42 | 37% | 68.2° |
| 2035-04-14 Sat | 0 | — | unknown | — | 79.1° 13:25 | 7.36 | 48% | 81.1° |
| 2035-04-15 Sun | 0 | — | unknown | — | 79.1° 13:25 | 7.3 | 59% | 93.8° |
| 2035-04-16 Mon | 0 | — | unknown | — | 79.1° 13:20 | 7.25 | 70% | 106.3° |
| 2035-04-17 Tue | 0 | — | unknown | — | 79.1° 13:15 | 7.19 | 79% | 118.4° |
| 2035-04-18 Wed | 0 | — | unknown | — | 79.1° 13:10 | 7.13 | 87% | 130.0° |
| 2035-04-19 Thu | 0 | — | unknown | — | 79.1° 13:05 | 7.07 | 93% | 140.7° |
| 2035-04-20 Fri | 0 | — | unknown | — | 79.1° 13:05 | 7.01 | 97% | 149.8° |
| 2035-04-21 Sat | 0 | — | unknown | — | 79.1° 13:00 | 6.96 | 100% | 155.7° |
| 2035-04-22 Sun | 0 | — | unknown | — | 79.1° 12:55 | 6.9 | 100% | 156.3° |
| 2035-04-23 Mon | 0 | — | unknown | — | 79.1° 12:50 | 6.84 | 98% | 151.3° |
| 2035-04-24 Tue | 0 | — | unknown | — | 79.1° 12:50 | 6.78 | 94% | 143.3° |
| 2035-04-25 Wed | 0 | — | unknown | — | 79.1° 12:45 | 6.72 | 90% | 133.7° |
| 2035-04-26 Thu | 0 | — | unknown | — | 79.1° 12:40 | 6.67 | 83% | 123.5° |
| 2035-04-27 Fri | 0 | — | unknown | — | 79.1° 12:35 | 6.61 | 75% | 112.9° |
| 2035-04-28 Sat | 0 | — | unknown | — | 79.1° 12:30 | 6.55 | 67% | 102.2° |
| 2035-04-29 Sun | 0 | — | unknown | — | 79.1° 12:30 | 6.49 | 57% | 91.2° |
| 2035-04-30 Mon | 0 | — | unknown | — | 79.1° 12:25 | 6.43 | 48% | 80.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2035-04-01&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.