← 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. |
|---|---|---|---|---|---|---|---|---|
| 2035-03-19 Mon | 13 | — | unknown | 20:05–21:45 (marginal, 1.67 h) | 72.5° 16:20 | 8.78 | 82% | 69.9° |
| 2035-03-20 Tue | 15 | — | unknown | 20:10–21:45 (marginal, 1.58 h) | 72.5° 16:20 | 8.73 | 90% | 83.5° |
| 2035-03-21 Wed | 18 | — | unknown | 20:10–20:45 (good, 0.58 h) | 72.5° 16:15 | 8.68 | 96% | 96.9° |
| 2035-03-22 Thu | 21 | — | unknown | 20:10–21:00 (good, 0.83 h) | 72.5° 16:10 | 8.63 | 99% | 110.1° |
| 2035-03-23 Fri | 23 | — | unknown | 20:10–21:05 (good, 0.92 h) | 72.5° 16:05 | 8.58 | 100% | 123.0° |
| 2035-03-24 Sat | 22 | — | unknown | 20:15–21:05 (good, 0.83 h) | 72.5° 16:00 | 8.52 | 99% | 135.6° |
| 2035-03-25 Sun | 24 | — | unknown | 21:15–22:00 (good, 0.75 h) | 72.5° 17:00 | 8.47 | 96% | 147.8° |
| 2035-03-26 Mon | 23 | — | unknown | 21:15–22:05 (good, 0.83 h) | 72.5° 16:55 | 8.42 | 91% | 159.3° |
| 2035-03-27 Tue | 22 | — | unknown | 21:20–22:00 (good, 0.67 h) | 72.5° 16:50 | 8.36 | 85% | 168.8° |
| 2035-03-28 Wed | 20 | — | unknown | 21:20–21:55 (good, 0.58 h) | 72.5° 16:45 | 8.31 | 77% | 169.3° |
| 2035-03-29 Thu | 19 | — | unknown | 21:20–21:55 (good, 0.58 h) | 72.5° 16:40 | 8.26 | 69% | 160.5° |
| 2035-03-30 Fri | 17 | — | unknown | 21:20–21:50 (good, 0.5 h) | 72.5° 16:40 | 8.2 | 60% | 149.5° |
| 2035-03-31 Sat | 14 | — | unknown | 21:25–21:45 (good, 0.33 h) | 72.5° 16:35 | 8.15 | 50% | 138.1° |
| 2035-04-01 Sun | 13 | — | unknown | 21:25–21:40 (good, 0.25 h) | 72.5° 16:30 | 8.09 | 41% | 126.4° |
| 2035-04-02 Mon | 11 | — | unknown | 21:25–21:35 (good, 0.17 h) | 72.5° 16:25 | 8.04 | 31% | 114.4° |
| 2035-04-03 Tue | 10 | — | unknown | 21:25–21:35 (good, 0.17 h) | 72.5° 16:25 | 7.98 | 22% | 102.1° |
| 2035-04-04 Wed | 7 | — | unknown | 20:55–21:55 (marginal, 1.0 h) | 72.5° 16:20 | 7.93 | 14% | 89.4° |
| 2035-04-05 Thu | 7 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 72.5° 16:15 | 7.87 | 8% | 76.4° |
| 2035-04-06 Fri | 6 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 72.5° 16:10 | 7.82 | 3% | 62.9° |
| 2035-04-07 Sat | 4 | — | unknown | 20:55–21:20 (marginal, 0.42 h) | 72.5° 16:05 | 7.76 | 0% | 49.2° |
| 2035-04-08 Sun | 3 | — | unknown | 21:00–21:15 (marginal, 0.25 h) | 72.5° 16:05 | 7.7 | 0% | 35.3° |
| 2035-04-09 Mon | 2 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 72.5° 16:00 | 7.65 | 3% | 21.6° |
| 2035-04-10 Tue | 2 | — | unknown | — | 72.5° 15:55 | 7.59 | 8% | 10.4° |
| 2035-04-11 Wed | 1 | — | unknown | — | 72.5° 15:50 | 7.53 | 16% | 13.2° |
| 2035-04-12 Thu | 1 | — | unknown | — | 72.5° 15:45 | 7.48 | 26% | 25.7° |
| 2035-04-13 Fri | 0 | — | unknown | — | 72.5° 15:45 | 7.42 | 37% | 39.4° |
| 2035-04-14 Sat | 0 | — | unknown | — | 72.5° 15:40 | 7.36 | 48% | 53.1° |
| 2035-04-15 Sun | 0 | — | unknown | — | 72.5° 15:35 | 7.3 | 59% | 66.8° |
| 2035-04-16 Mon | 0 | — | unknown | — | 72.5° 15:30 | 7.25 | 70% | 80.2° |
| 2035-04-17 Tue | 0 | — | unknown | — | 72.5° 15:30 | 7.19 | 79% | 93.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2035-03-19&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.