← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-03-18 Sun | 41 | — | unknown | 03:20–04:55 (good, 1.58 h) | 87.3° 09:30 | 8.81 | 12% | 70.6° |
| 2029-03-19 Mon | 42 | — | unknown | 03:15–04:55 (good, 1.67 h) | 87.3° 09:30 | 8.76 | 19% | 77.2° |
| 2029-03-20 Tue | 42 | — | unknown | 03:10–04:50 (good, 1.67 h) | 87.3° 09:25 | 8.71 | 27% | 84.2° |
| 2029-03-21 Wed | 44 | — | unknown | 03:05–04:50 (good, 1.75 h) | 87.3° 09:20 | 8.66 | 36% | 91.6° |
| 2029-03-22 Thu | 45 | — | unknown | 03:00–04:50 (good, 1.83 h) | 87.3° 09:15 | 8.6 | 46% | 99.0° |
| 2029-03-23 Fri | 44 | — | unknown | 03:00–04:45 (good, 1.75 h) | 87.3° 09:15 | 8.55 | 56% | 106.4° |
| 2029-03-24 Sat | 45 | — | unknown | 04:00–05:45 (good, 1.75 h) | 87.3° 10:10 | 8.5 | 67% | 113.4° |
| 2029-03-25 Sun | 45 | — | unknown | 04:00–05:40 (good, 1.67 h) | 87.3° 10:05 | 8.45 | 77% | 119.6° |
| 2029-03-26 Mon | 45 | — | unknown | 03:55–05:40 (good, 1.75 h) | 87.3° 10:00 | 8.39 | 86% | 124.3° |
| 2029-03-27 Tue | 41 | — | unknown | 03:55–05:40 (good, 1.75 h) | 87.3° 09:55 | 8.34 | 93% | 126.8° |
| 2029-03-28 Wed | 40 | — | unknown | 03:50–05:35 (good, 1.75 h) | 87.3° 09:55 | 8.28 | 98% | 126.4° |
| 2029-03-29 Thu | 40 | — | unknown | 03:50–05:35 (good, 1.75 h) | 87.3° 09:50 | 8.23 | 100% | 123.2° |
| 2029-03-30 Fri | 40 | — | unknown | 03:45–05:35 (good, 1.83 h) | 87.3° 09:45 | 8.18 | 99% | 117.6° |
| 2029-03-31 Sat | 37 | — | unknown | 03:45–05:30 (good, 1.75 h) | 87.3° 09:40 | 8.12 | 95% | 110.3° |
| 2029-04-01 Sun | 36 | — | unknown | 03:45–05:30 (good, 1.75 h) | 87.3° 09:35 | 8.07 | 88% | 102.1° |
| 2029-04-02 Mon | 34 | — | unknown | 03:40–05:25 (good, 1.75 h) | 87.3° 09:35 | 8.01 | 80% | 93.5° |
| 2029-04-03 Tue | 35 | — | unknown | 03:35–05:25 (good, 1.83 h) | 87.3° 09:30 | 7.96 | 70% | 85.1° |
| 2029-04-04 Wed | 38 | — | unknown | 03:30–05:25 (good, 1.92 h) | 87.3° 09:25 | 7.9 | 59% | 77.1° |
| 2029-04-05 Thu | 41 | — | unknown | 03:20–05:20 (good, 2.0 h) | 87.3° 09:20 | 7.85 | 49% | 69.8° |
| 2029-04-06 Fri | 46 | — | unknown | 03:05–05:20 (good, 2.25 h) | 87.3° 09:20 | 7.79 | 39% | 63.6° |
| 2029-04-07 Sat | 50 | — | unknown | 03:00–05:15 (good, 2.25 h) | 87.3° 09:15 | 7.73 | 29% | 58.5° |
| 2029-04-08 Sun | 55 | — | unknown | 02:55–05:15 (good, 2.33 h) | 87.3° 09:10 | 7.68 | 21% | 55.0° |
| 2029-04-09 Mon | 59 | — | unknown | 02:50–05:15 (good, 2.42 h) | 87.3° 09:05 | 7.62 | 14% | 53.2° |
| 2029-04-10 Tue | 60 | — | unknown | 02:45–05:10 (good, 2.42 h) | 87.3° 09:00 | 7.56 | 8% | 53.2° |
| 2029-04-11 Wed | 61 | — | unknown | 02:45–05:10 (good, 2.42 h) | 87.3° 09:00 | 7.51 | 4% | 55.1° |
| 2029-04-12 Thu | 62 | — | unknown | 02:40–05:05 (good, 2.42 h) | 87.3° 08:55 | 7.45 | 1% | 58.6° |
| 2029-04-13 Fri | 63 | — | unknown | 02:35–05:05 (good, 2.5 h) | 87.3° 08:50 | 7.39 | 0% | 63.3° |
| 2029-04-14 Sat | 65 | — | unknown | 02:30–05:05 (good, 2.58 h) | 87.3° 08:45 | 7.33 | 1% | 69.1° |
| 2029-04-15 Sun | 65 | — | unknown | 02:30–05:00 (good, 2.5 h) | 87.3° 08:40 | 7.28 | 4% | 75.6° |
| 2029-04-16 Mon | 66 | — | unknown | 02:25–05:00 (good, 2.58 h) | 87.3° 08:40 | 7.22 | 8% | 82.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-03-18&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.