← 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. |
|---|---|---|---|---|---|---|---|---|
| 2035-03-22 Thu | 14 | — | unknown | 20:10–21:40 (marginal, 1.5 h) | 42.9° 18:00 | 8.63 | 99% | 87.5° |
| 2035-03-23 Fri | 17 | — | unknown | 20:10–20:45 (good, 0.58 h) | 42.9° 17:55 | 8.58 | 100% | 99.6° |
| 2035-03-24 Sat | 19 | — | unknown | 20:15–20:55 (good, 0.67 h) | 42.9° 17:50 | 8.52 | 99% | 111.3° |
| 2035-03-25 Sun | 23 | — | unknown | 21:15–21:55 (good, 0.67 h) | 42.9° 18:45 | 8.47 | 96% | 122.6° |
| 2035-03-26 Mon | 22 | — | unknown | 21:15–22:00 (good, 0.75 h) | 42.9° 18:40 | 8.42 | 91% | 133.2° |
| 2035-03-27 Tue | 21 | — | unknown | 21:20–22:00 (good, 0.67 h) | 42.9° 18:40 | 8.36 | 85% | 142.9° |
| 2035-03-28 Wed | 19 | — | unknown | 21:20–21:55 (good, 0.58 h) | 42.9° 18:35 | 8.31 | 77% | 151.0° |
| 2035-03-29 Thu | 17 | — | unknown | 21:20–21:50 (good, 0.5 h) | 42.9° 18:30 | 8.26 | 69% | 155.9° |
| 2035-03-30 Fri | 15 | — | unknown | 21:20–21:45 (good, 0.42 h) | 42.9° 18:25 | 8.2 | 60% | 155.8° |
| 2035-03-31 Sat | 13 | — | unknown | 21:25–21:40 (good, 0.25 h) | 42.9° 18:25 | 8.15 | 50% | 150.7° |
| 2035-04-01 Sun | 12 | — | unknown | 21:25–21:40 (good, 0.25 h) | 42.9° 18:20 | 8.09 | 41% | 142.6° |
| 2035-04-02 Mon | 10 | — | unknown | 21:25–21:35 (good, 0.17 h) | 42.9° 18:15 | 8.04 | 31% | 132.8° |
| 2035-04-03 Tue | 9 | — | unknown | 21:25–21:30 (good, 0.08 h) | 42.9° 18:10 | 7.98 | 22% | 122.0° |
| 2035-04-04 Wed | 7 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 42.9° 18:05 | 7.93 | 14% | 110.5° |
| 2035-04-05 Thu | 6 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 42.9° 18:05 | 7.87 | 8% | 98.4° |
| 2035-04-06 Fri | 5 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 42.9° 18:00 | 7.82 | 3% | 85.9° |
| 2035-04-07 Sat | 4 | — | unknown | 20:55–21:15 (marginal, 0.33 h) | 42.9° 17:55 | 7.76 | 0% | 73.1° |
| 2035-04-08 Sun | 3 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 42.9° 17:50 | 7.7 | 0% | 60.2° |
| 2035-04-09 Mon | 2 | — | unknown | 21:00–21:05 (marginal, 0.08 h) | 42.9° 17:45 | 7.65 | 3% | 47.6° |
| 2035-04-10 Tue | 1 | — | unknown | — | 42.9° 17:45 | 7.59 | 8% | 36.0° |
| 2035-04-11 Wed | 1 | — | unknown | — | 42.9° 17:40 | 7.53 | 16% | 26.9° |
| 2035-04-12 Thu | 1 | — | unknown | — | 42.9° 17:35 | 7.48 | 26% | 23.6° |
| 2035-04-13 Fri | 0 | — | unknown | — | 42.9° 17:30 | 7.42 | 37% | 27.9° |
| 2035-04-14 Sat | 0 | — | unknown | — | 42.9° 17:30 | 7.36 | 48% | 37.2° |
| 2035-04-15 Sun | 0 | — | unknown | — | 42.9° 17:25 | 7.3 | 59% | 48.3° |
| 2035-04-16 Mon | 0 | — | unknown | — | 42.9° 17:20 | 7.25 | 70% | 60.2° |
| 2035-04-17 Tue | 0 | — | unknown | — | 42.9° 17:15 | 7.19 | 79% | 72.2° |
| 2035-04-18 Wed | 0 | — | unknown | — | 42.9° 17:10 | 7.13 | 87% | 84.2° |
| 2035-04-19 Thu | 0 | — | unknown | — | 42.9° 17:10 | 7.07 | 93% | 96.1° |
| 2035-04-20 Fri | 0 | — | unknown | — | 42.9° 17:05 | 7.01 | 97% | 107.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2035-03-22&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.