← 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. |
|---|---|---|---|---|---|---|---|---|
| 2035-03-17 Sat | 40 | — | unknown | 03:25–05:00 (good, 1.58 h) | 87.3° 09:40 | 8.88 | 62% | 110.7° |
| 2035-03-18 Sun | 40 | — | unknown | 03:25–04:55 (good, 1.5 h) | 87.3° 09:35 | 8.83 | 73% | 116.5° |
| 2035-03-19 Mon | 40 | — | unknown | 03:25–04:55 (good, 1.5 h) | 87.3° 09:30 | 8.78 | 82% | 120.7° |
| 2035-03-20 Tue | 37 | — | unknown | 03:20–04:55 (good, 1.58 h) | 87.3° 09:25 | 8.73 | 90% | 123.0° |
| 2035-03-21 Wed | 35 | — | unknown | 03:20–04:50 (good, 1.5 h) | 87.3° 09:25 | 8.68 | 96% | 123.3° |
| 2035-03-22 Thu | 35 | — | unknown | 03:15–04:50 (good, 1.58 h) | 87.3° 09:20 | 8.63 | 99% | 121.5° |
| 2035-03-23 Fri | 34 | — | unknown | 03:15–04:45 (good, 1.5 h) | 87.3° 09:15 | 8.58 | 100% | 117.9° |
| 2035-03-24 Sat | 33 | — | unknown | 04:15–05:45 (good, 1.5 h) | 87.3° 10:10 | 8.52 | 99% | 113.1° |
| 2035-03-25 Sun | 31 | — | unknown | 04:15–05:45 (good, 1.5 h) | 87.3° 10:05 | 8.47 | 96% | 107.4° |
| 2035-03-26 Mon | 29 | — | unknown | 04:15–05:40 (good, 1.42 h) | 87.3° 10:05 | 8.42 | 91% | 101.1° |
| 2035-03-27 Tue | 29 | — | unknown | 04:15–05:40 (good, 1.42 h) | 87.3° 10:00 | 8.36 | 85% | 94.6° |
| 2035-03-28 Wed | 30 | — | unknown | 04:10–05:40 (good, 1.5 h) | 87.3° 09:55 | 8.31 | 77% | 88.0° |
| 2035-03-29 Thu | 31 | — | unknown | 04:05–05:35 (good, 1.5 h) | 87.3° 09:50 | 8.26 | 69% | 81.5° |
| 2035-03-30 Fri | 33 | — | unknown | 03:55–05:35 (good, 1.67 h) | 87.3° 09:45 | 8.2 | 60% | 75.4° |
| 2035-03-31 Sat | 35 | — | unknown | 03:45–05:30 (good, 1.75 h) | 87.3° 09:45 | 8.15 | 50% | 69.7° |
| 2035-04-01 Sun | 39 | — | unknown | 03:40–05:30 (good, 1.83 h) | 87.3° 09:40 | 8.09 | 41% | 64.6° |
| 2035-04-02 Mon | 45 | — | unknown | 03:20–05:30 (good, 2.17 h) | 87.3° 09:35 | 8.04 | 31% | 60.5° |
| 2035-04-03 Tue | 50 | — | unknown | 03:15–05:25 (good, 2.17 h) | 87.3° 09:30 | 7.98 | 22% | 57.7° |
| 2035-04-04 Wed | 54 | — | unknown | 03:15–05:25 (good, 2.17 h) | 87.3° 09:30 | 7.93 | 14% | 56.6° |
| 2035-04-05 Thu | 55 | — | unknown | 03:10–05:20 (good, 2.17 h) | 87.3° 09:25 | 7.87 | 8% | 57.4° |
| 2035-04-06 Fri | 56 | — | unknown | 03:05–05:20 (good, 2.25 h) | 87.3° 09:20 | 7.82 | 3% | 60.3° |
| 2035-04-07 Sat | 58 | — | unknown | 03:00–05:20 (good, 2.33 h) | 87.3° 09:15 | 7.76 | 0% | 64.9° |
| 2035-04-08 Sun | 58 | — | unknown | 02:55–05:15 (good, 2.33 h) | 87.3° 09:10 | 7.7 | 0% | 71.1° |
| 2035-04-09 Mon | 59 | — | unknown | 02:55–05:15 (good, 2.33 h) | 87.3° 09:10 | 7.65 | 3% | 78.3° |
| 2035-04-10 Tue | 59 | — | unknown | 02:50–05:10 (good, 2.33 h) | 87.3° 09:05 | 7.59 | 8% | 86.2° |
| 2035-04-11 Wed | 61 | — | unknown | 02:45–05:10 (good, 2.42 h) | 87.3° 09:00 | 7.53 | 16% | 94.2° |
| 2035-04-12 Thu | 62 | — | unknown | 02:40–05:10 (good, 2.5 h) | 87.3° 08:55 | 7.48 | 26% | 102.0° |
| 2035-04-13 Fri | 63 | — | unknown | 02:35–05:05 (good, 2.5 h) | 87.3° 08:50 | 7.42 | 37% | 109.1° |
| 2035-04-14 Sat | 63 | — | unknown | 02:35–05:05 (good, 2.5 h) | 87.3° 08:50 | 7.36 | 48% | 115.2° |
| 2035-04-15 Sun | 63 | — | unknown | 02:35–05:00 (good, 2.42 h) | 87.3° 08:45 | 7.3 | 59% | 119.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2035-03-17&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.