← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-03-11 Wed | 89 | — | unknown | 01:45–05:10 (good, 3.42 h) | 87.1° 07:40 | 9.18 | 0% | 83.1° |
| 2043-03-12 Thu | 89 | — | unknown | 01:40–05:05 (good, 3.42 h) | 87.1° 07:35 | 9.13 | 3% | 88.8° |
| 2043-03-13 Fri | 91 | — | unknown | 01:40–05:05 (good, 3.42 h) | 87.1° 07:30 | 9.08 | 9% | 94.5° |
| 2043-03-14 Sat | 92 | — | unknown | 01:35–05:05 (good, 3.5 h) | 87.1° 07:30 | 9.03 | 17% | 100.0° |
| 2043-03-15 Sun | 92 | — | unknown | 01:30–05:00 (good, 3.5 h) | 87.1° 07:25 | 8.98 | 27% | 104.8° |
| 2043-03-16 Mon | 94 | — | unknown | 01:25–05:00 (good, 3.58 h) | 87.1° 07:20 | 8.93 | 38% | 108.7° |
| 2043-03-17 Tue | 93 | — | unknown | 01:30–05:00 (good, 3.5 h) | 87.1° 07:15 | 8.88 | 49% | 111.4° |
| 2043-03-18 Wed | 92 | — | unknown | 01:25–04:55 (good, 3.5 h) | 87.1° 07:15 | 8.83 | 60% | 112.8° |
| 2043-03-19 Thu | 89 | — | unknown | 01:25–04:55 (good, 3.5 h) | 87.1° 07:10 | 8.78 | 70% | 112.9° |
| 2043-03-20 Fri | 87 | — | unknown | 01:25–04:50 (good, 3.42 h) | 87.1° 07:05 | 8.73 | 79% | 111.7° |
| 2043-03-21 Sat | 75 | — | unknown | 01:25–04:50 (good, 3.42 h) | 87.1° 07:00 | 8.68 | 87% | 109.3° |
| 2043-03-22 Sun | 71 | — | unknown | 01:25–04:50 (good, 3.42 h) | 87.1° 06:55 | 8.62 | 93% | 106.0° |
| 2043-03-23 Mon | 65 | — | unknown | 01:30–04:45 (good, 3.25 h) | 87.1° 06:55 | 8.57 | 97% | 102.1° |
| 2043-03-24 Tue | 61 | — | unknown | 01:45–04:45 (good, 3.0 h) | 87.1° 06:50 | 8.52 | 100% | 97.7° |
| 2043-03-25 Wed | 57 | — | unknown | 02:00–04:45 (good, 2.75 h) | 87.1° 06:45 | 8.47 | 100% | 93.1° |
| 2043-03-26 Thu | 54 | — | unknown | 02:10–04:40 (good, 2.5 h) | 87.1° 06:40 | 8.41 | 98% | 88.4° |
| 2043-03-27 Fri | 53 | — | unknown | 02:10–04:40 (good, 2.5 h) | 87.1° 06:35 | 8.36 | 95% | 83.8° |
| 2043-03-28 Sat | 53 | — | unknown | 01:55–05:35 (good, 2.67 h) | 87.1° 07:35 | 8.31 | 90% | 79.4° |
| 2043-03-29 Sun | 55 | — | unknown | 02:15–05:35 (good, 3.33 h) | 87.1° 07:30 | 8.25 | 84% | 75.5° |
| 2043-03-30 Mon | 60 | — | unknown | 01:55–05:35 (good, 3.67 h) | 87.1° 07:25 | 8.2 | 76% | 72.1° |
| 2043-03-31 Tue | 70 | — | unknown | 01:25–05:30 (good, 4.08 h) | 87.1° 07:20 | 8.14 | 68% | 69.5° |
| 2043-04-01 Wed | 83 | — | unknown | 01:25–05:30 (good, 4.08 h) | 87.1° 07:20 | 8.09 | 58% | 67.7° |
| 2043-04-02 Thu | 94 | — | unknown | 01:20–05:30 (good, 4.17 h) | 87.1° 07:15 | 8.03 | 49% | 67.0° |
| 2043-04-03 Fri | 99 | — | unknown | 01:15–05:25 (good, 4.17 h) | 87.1° 07:10 | 7.98 | 38% | 67.4° |
| 2043-04-04 Sat | 100 | — | unknown | 01:10–05:25 (good, 4.25 h) | 87.1° 07:05 | 7.92 | 29% | 69.0° |
| 2043-04-05 Sun | 100 | — | unknown | 01:10–05:20 (good, 4.17 h) | 87.1° 07:00 | 7.87 | 19% | 71.8° |
| 2043-04-06 Mon | 100 | — | unknown | 01:05–05:20 (good, 4.25 h) | 87.1° 07:00 | 7.81 | 11% | 75.7° |
| 2043-04-07 Tue | 100 | — | unknown | 01:00–05:20 (good, 4.33 h) | 87.1° 06:55 | 7.76 | 5% | 80.6° |
| 2043-04-08 Wed | 100 | — | unknown | 00:55–05:15 (good, 4.33 h) | 87.1° 06:50 | 7.7 | 1% | 86.1° |
| 2043-04-09 Thu | 100 | — | unknown | 00:50–05:15 (good, 4.42 h) | 87.1° 06:45 | 7.64 | 0% | 92.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-03-11&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.