← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-04-09 Mon | 59 | — | unknown | 02:50–05:15 (good, 2.42 h) | 87.2° 09:05 | 7.62 | 14% | 53.3° |
| 2029-04-10 Tue | 60 | — | unknown | 02:45–05:10 (good, 2.42 h) | 87.2° 09:00 | 7.56 | 8% | 53.3° |
| 2029-04-11 Wed | 61 | — | unknown | 02:45–05:10 (good, 2.42 h) | 87.2° 09:00 | 7.51 | 4% | 55.2° |
| 2029-04-12 Thu | 62 | — | unknown | 02:40–05:05 (good, 2.42 h) | 87.2° 08:55 | 7.45 | 1% | 58.6° |
| 2029-04-13 Fri | 63 | — | unknown | 02:35–05:05 (good, 2.5 h) | 87.2° 08:50 | 7.39 | 0% | 63.4° |
| 2029-04-14 Sat | 65 | — | unknown | 02:30–05:05 (good, 2.58 h) | 87.2° 08:45 | 7.33 | 1% | 69.1° |
| 2029-04-15 Sun | 65 | — | unknown | 02:25–05:00 (good, 2.58 h) | 87.2° 08:40 | 7.28 | 4% | 75.6° |
| 2029-04-16 Mon | 66 | — | unknown | 02:25–05:00 (good, 2.58 h) | 87.2° 08:40 | 7.22 | 8% | 82.6° |
| 2029-04-17 Tue | 68 | — | unknown | 02:20–05:00 (good, 2.67 h) | 87.2° 08:35 | 7.16 | 14% | 89.9° |
| 2029-04-18 Wed | 68 | — | unknown | 02:15–04:55 (good, 2.67 h) | 87.2° 08:30 | 7.1 | 22% | 97.3° |
| 2029-04-19 Thu | 69 | — | unknown | 02:10–04:55 (good, 2.75 h) | 87.2° 08:25 | 7.05 | 31% | 104.6° |
| 2029-04-20 Fri | 69 | — | unknown | 02:10–04:50 (good, 2.67 h) | 87.2° 08:25 | 6.99 | 40% | 111.6° |
| 2029-04-21 Sat | 70 | — | unknown | 02:10–04:50 (good, 2.67 h) | 87.2° 08:20 | 6.93 | 51% | 117.8° |
| 2029-04-22 Sun | 70 | — | unknown | 02:05–04:50 (good, 2.75 h) | 87.2° 08:15 | 6.87 | 62% | 122.9° |
| 2029-04-23 Mon | 70 | — | unknown | 02:05–04:45 (good, 2.67 h) | 87.2° 08:10 | 6.81 | 73% | 126.2° |
| 2029-04-24 Tue | 70 | — | unknown | 02:00–04:45 (good, 2.75 h) | 87.2° 08:05 | 6.75 | 82% | 127.0° |
| 2029-04-25 Wed | 63 | — | unknown | 02:00–04:40 (good, 2.67 h) | 87.2° 08:05 | 6.7 | 90% | 125.0° |
| 2029-04-26 Thu | 63 | — | unknown | 01:55–04:40 (good, 2.75 h) | 87.2° 08:00 | 6.64 | 96% | 120.5° |
| 2029-04-27 Fri | 59 | — | unknown | 02:00–04:40 (good, 2.67 h) | 87.2° 07:55 | 6.58 | 99% | 113.8° |
| 2029-04-28 Sat | 53 | — | unknown | 02:00–04:35 (good, 2.58 h) | 87.2° 07:50 | 6.52 | 100% | 105.8° |
| 2029-04-29 Sun | 49 | — | unknown | 02:00–04:35 (good, 2.58 h) | 87.2° 07:45 | 6.46 | 97% | 97.1° |
| 2029-04-30 Mon | 47 | — | unknown | 02:00–04:35 (good, 2.58 h) | 87.2° 07:45 | 6.41 | 91% | 88.4° |
| 2029-05-01 Tue | 45 | — | unknown | 01:55–04:30 (good, 2.58 h) | 87.2° 07:40 | 6.35 | 84% | 79.9° |
| 2029-05-02 Wed | 47 | — | unknown | 01:45–04:30 (good, 2.75 h) | 87.2° 07:35 | 6.29 | 75% | 72.1° |
| 2029-05-03 Thu | 53 | — | unknown | 01:15–04:25 (good, 3.17 h) | 87.2° 07:30 | 6.23 | 65% | 65.3° |
| 2029-05-04 Fri | 62 | — | unknown | 01:15–04:25 (good, 3.17 h) | 87.2° 07:30 | 6.17 | 55% | 59.7° |
| 2029-05-05 Sat | 69 | — | unknown | 01:10–04:25 (good, 3.25 h) | 87.2° 07:25 | 6.12 | 45% | 55.6° |
| 2029-05-06 Sun | 75 | — | unknown | 01:05–04:20 (good, 3.25 h) | 87.2° 07:20 | 6.06 | 35% | 53.4° |
| 2029-05-07 Mon | 80 | — | unknown | 01:00–04:20 (good, 3.33 h) | 87.2° 07:15 | 6.0 | 26% | 52.9° |
| 2029-05-08 Tue | 86 | — | unknown | 00:55–04:20 (good, 3.42 h) | 87.2° 07:10 | 5.95 | 19% | 54.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-04-09&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.