← 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. |
|---|---|---|---|---|---|---|---|---|
| 2036-03-16 Sun | 17 | — | unknown | 04:40–05:00 (good, 0.33 h) | 71.1° 08:40 | 8.9 | 77% | 74.7° |
| 2036-03-17 Mon | 18 | — | unknown | 04:25–04:55 (good, 0.5 h) | 71.1° 08:40 | 8.85 | 68% | 65.6° |
| 2036-03-18 Tue | 20 | — | unknown | 04:00–04:55 (good, 0.92 h) | 71.1° 08:35 | 8.8 | 58% | 57.4° |
| 2036-03-19 Wed | 23 | — | unknown | 03:50–04:55 (good, 1.08 h) | 71.1° 08:30 | 8.74 | 48% | 50.3° |
| 2036-03-20 Thu | 25 | — | unknown | 03:40–04:50 (good, 1.17 h) | 71.1° 08:25 | 8.69 | 39% | 44.7° |
| 2036-03-21 Fri | 30 | — | unknown | 03:20–04:50 (good, 1.5 h) | 71.1° 08:20 | 8.64 | 30% | 41.3° |
| 2036-03-22 Sat | 35 | — | unknown | 03:15–04:45 (good, 1.5 h) | 71.1° 08:20 | 8.59 | 22% | 40.5° |
| 2036-03-23 Sun | 39 | — | unknown | 03:15–04:45 (good, 1.5 h) | 71.1° 08:15 | 8.54 | 14% | 42.6° |
| 2036-03-24 Mon | 40 | — | unknown | 03:10–04:45 (good, 1.58 h) | 71.1° 08:10 | 8.48 | 8% | 47.2° |
| 2036-03-25 Tue | 40 | — | unknown | 03:05–04:40 (good, 1.58 h) | 71.1° 08:05 | 8.43 | 4% | 53.7° |
| 2036-03-26 Wed | 42 | — | unknown | 03:00–04:40 (good, 1.67 h) | 71.1° 08:00 | 8.38 | 1% | 61.7° |
| 2036-03-27 Thu | 43 | — | unknown | 02:55–04:40 (good, 1.75 h) | 71.1° 08:00 | 8.32 | 0% | 70.7° |
| 2036-03-28 Fri | 44 | — | unknown | 02:55–04:35 (good, 1.67 h) | 71.1° 07:55 | 8.27 | 1% | 80.3° |
| 2036-03-29 Sat | 45 | — | unknown | 02:50–05:35 (good, 1.75 h) | 71.1° 08:50 | 8.21 | 5% | 90.3° |
| 2036-03-30 Sun | 44 | — | unknown | 03:45–05:30 (good, 1.75 h) | 71.1° 08:45 | 8.16 | 10% | 100.5° |
| 2036-03-31 Mon | 46 | — | unknown | 03:40–05:30 (good, 1.83 h) | 71.1° 08:45 | 8.11 | 18% | 110.5° |
| 2036-04-01 Tue | 48 | — | unknown | 03:35–05:30 (good, 1.92 h) | 71.1° 08:40 | 8.05 | 27% | 120.1° |
| 2036-04-02 Wed | 47 | — | unknown | 03:35–05:25 (good, 1.83 h) | 71.1° 08:35 | 8.0 | 38% | 128.6° |
| 2036-04-03 Thu | 49 | — | unknown | 03:30–05:25 (good, 1.92 h) | 71.1° 08:30 | 7.94 | 49% | 135.3° |
| 2036-04-04 Fri | 48 | — | unknown | 03:30–05:20 (good, 1.83 h) | 71.1° 08:25 | 7.88 | 61% | 139.0° |
| 2036-04-05 Sat | 49 | — | unknown | 03:25–05:20 (good, 1.92 h) | 71.1° 08:25 | 7.83 | 72% | 138.9° |
| 2036-04-06 Sun | 49 | — | unknown | 03:25–05:20 (good, 1.92 h) | 71.1° 08:20 | 7.77 | 81% | 134.8° |
| 2036-04-07 Mon | 44 | — | unknown | 03:25–05:15 (good, 1.83 h) | 71.1° 08:15 | 7.72 | 89% | 127.8° |
| 2036-04-08 Tue | 43 | — | unknown | 03:20–05:15 (good, 1.92 h) | 71.1° 08:10 | 7.66 | 95% | 118.9° |
| 2036-04-09 Wed | 38 | — | unknown | 03:25–05:15 (good, 1.83 h) | 71.1° 08:05 | 7.6 | 99% | 109.1° |
| 2036-04-10 Thu | 33 | — | unknown | 03:30–05:10 (good, 1.67 h) | 71.1° 08:05 | 7.55 | 100% | 98.9° |
| 2036-04-11 Fri | 29 | — | unknown | 04:05–05:10 (good, 1.08 h) | 71.1° 08:00 | 7.49 | 98% | 88.6° |
| 2036-04-12 Sat | 26 | — | unknown | 04:35–05:05 (good, 0.5 h) | 71.1° 07:55 | 7.43 | 95% | 78.6° |
| 2036-04-13 Sun | 24 | — | unknown | 04:55–05:05 (good, 0.17 h) | 71.1° 07:50 | 7.38 | 89% | 69.2° |
| 2036-04-14 Mon | 25 | — | unknown | 05:00–05:05 (good, 0.08 h) | 71.1° 07:50 | 7.32 | 82% | 60.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-03-16&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.