← 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. |
|---|---|---|---|---|---|---|---|---|
| 2036-04-15 Tue | 37 | — | unknown | 02:55–05:00 (good, 2.08 h) | 87.2° 08:40 | 7.26 | 74% | 76.9° |
| 2036-04-16 Wed | 40 | — | unknown | 02:45–05:00 (good, 2.25 h) | 87.2° 08:35 | 7.2 | 66% | 71.3° |
| 2036-04-17 Thu | 44 | — | unknown | 02:35–04:55 (good, 2.33 h) | 87.2° 08:35 | 7.14 | 56% | 66.5° |
| 2036-04-18 Fri | 53 | — | unknown | 02:15–04:55 (good, 2.67 h) | 87.2° 08:30 | 7.09 | 47% | 62.6° |
| 2036-04-19 Sat | 60 | — | unknown | 02:10–04:55 (good, 2.75 h) | 87.2° 08:25 | 7.03 | 37% | 59.9° |
| 2036-04-20 Sun | 66 | — | unknown | 02:05–04:50 (good, 2.75 h) | 87.2° 08:20 | 6.97 | 28% | 58.6° |
| 2036-04-21 Mon | 70 | — | unknown | 02:05–04:50 (good, 2.75 h) | 87.2° 08:20 | 6.91 | 20% | 58.8° |
| 2036-04-22 Tue | 71 | — | unknown | 02:00–04:45 (good, 2.75 h) | 87.2° 08:15 | 6.85 | 13% | 60.6° |
| 2036-04-23 Wed | 73 | — | unknown | 01:55–04:45 (good, 2.83 h) | 87.2° 08:10 | 6.8 | 7% | 63.9° |
| 2036-04-24 Thu | 74 | — | unknown | 01:50–04:45 (good, 2.92 h) | 87.2° 08:05 | 6.74 | 3% | 68.6° |
| 2036-04-25 Fri | 75 | — | unknown | 01:45–04:40 (good, 2.92 h) | 87.2° 08:00 | 6.68 | 0% | 74.4° |
| 2036-04-26 Sat | 76 | — | unknown | 01:45–04:40 (good, 2.92 h) | 87.2° 08:00 | 6.62 | 0% | 81.0° |
| 2036-04-27 Sun | 77 | — | unknown | 01:40–04:40 (good, 3.0 h) | 87.2° 07:55 | 6.56 | 3% | 88.1° |
| 2036-04-28 Mon | 78 | — | unknown | 01:35–04:35 (good, 3.0 h) | 87.2° 07:50 | 6.5 | 8% | 95.4° |
| 2036-04-29 Tue | 80 | — | unknown | 01:30–04:35 (good, 3.08 h) | 87.2° 07:45 | 6.45 | 15% | 102.5° |
| 2036-04-30 Wed | 80 | — | unknown | 01:25–04:30 (good, 3.08 h) | 87.2° 07:40 | 6.39 | 25% | 109.1° |
| 2036-05-01 Thu | 81 | — | unknown | 01:25–04:30 (good, 3.08 h) | 87.2° 07:40 | 6.33 | 35% | 114.6° |
| 2036-05-02 Fri | 82 | — | unknown | 01:25–04:30 (good, 3.08 h) | 87.2° 07:35 | 6.27 | 46% | 118.7° |
| 2036-05-03 Sat | 81 | — | unknown | 01:20–04:25 (good, 3.08 h) | 87.2° 07:30 | 6.21 | 58% | 121.0° |
| 2036-05-04 Sun | 81 | — | unknown | 01:20–04:25 (good, 3.08 h) | 87.2° 07:25 | 6.16 | 69% | 121.2° |
| 2036-05-05 Mon | 81 | — | unknown | 01:20–04:25 (good, 3.08 h) | 87.2° 07:25 | 6.1 | 78% | 119.4° |
| 2036-05-06 Tue | 71 | — | unknown | 01:20–04:20 (good, 3.0 h) | 87.2° 07:20 | 6.04 | 87% | 115.9° |
| 2036-05-07 Wed | 66 | — | unknown | 01:20–04:20 (good, 3.0 h) | 87.2° 07:15 | 5.99 | 93% | 110.9° |
| 2036-05-08 Thu | 61 | — | unknown | 01:20–04:20 (good, 3.0 h) | 87.2° 07:10 | 5.93 | 98% | 105.0° |
| 2036-05-09 Fri | 55 | — | unknown | 01:25–04:15 (good, 2.83 h) | 87.2° 07:05 | 5.87 | 100% | 98.6° |
| 2036-05-10 Sat | 51 | — | unknown | 01:45–04:15 (good, 2.5 h) | 87.2° 07:05 | 5.82 | 99% | 92.0° |
| 2036-05-11 Sun | 48 | — | unknown | 02:05–04:15 (good, 2.17 h) | 87.2° 07:00 | 5.76 | 97% | 85.4° |
| 2036-05-12 Mon | 46 | — | unknown | 02:05–04:10 (good, 2.08 h) | 87.2° 06:55 | 5.71 | 93% | 79.1° |
| 2036-05-13 Tue | 47 | — | unknown | 01:40–04:10 (good, 2.5 h) | 87.2° 06:50 | 5.65 | 87% | 73.3° |
| 2036-05-14 Wed | 50 | — | unknown | 01:05–04:10 (good, 3.08 h) | 87.2° 06:45 | 5.6 | 80% | 68.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-04-15&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.