← 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. |
|---|---|---|---|---|---|---|---|---|
| 2034-03-09 Thu | 15 | — | unknown | 19:55–20:20 (good, 0.42 h) | 79.1° 14:50 | 9.27 | 80% | 155.4° |
| 2034-03-10 Fri | 14 | — | unknown | 19:55–20:15 (good, 0.33 h) | 79.1° 14:45 | 9.22 | 72% | 148.5° |
| 2034-03-11 Sat | 11 | — | unknown | 20:00–20:10 (good, 0.17 h) | 79.1° 14:40 | 9.17 | 63% | 139.4° |
| 2034-03-12 Sun | 10 | — | unknown | 20:00–20:10 (good, 0.17 h) | 79.1° 14:35 | 9.12 | 53% | 129.1° |
| 2034-03-13 Mon | 8 | — | unknown | 20:00–20:05 (good, 0.08 h) | 79.1° 14:30 | 9.07 | 44% | 118.2° |
| 2034-03-14 Tue | 7 | — | unknown | 19:30–20:30 (marginal, 1.0 h) | 79.1° 14:30 | 9.02 | 34% | 106.7° |
| 2034-03-15 Wed | 5 | — | unknown | 20:05–20:25 (marginal, 0.33 h) | 79.1° 14:25 | 8.97 | 24% | 94.7° |
| 2034-03-16 Thu | 4 | — | unknown | 20:05–20:20 (marginal, 0.25 h) | 79.1° 14:20 | 8.92 | 16% | 82.3° |
| 2034-03-17 Fri | 4 | — | unknown | 19:30–19:50 (marginal, 0.33 h) | 79.1° 14:15 | 8.87 | 8% | 69.6° |
| 2034-03-18 Sat | 3 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 79.1° 14:10 | 8.82 | 3% | 56.6° |
| 2034-03-19 Sun | 2 | — | unknown | 19:35–19:40 (marginal, 0.08 h) | 79.1° 14:10 | 8.77 | 0% | 43.8° |
| 2034-03-20 Mon | 1 | — | unknown | — | 79.1° 14:05 | 8.72 | 0% | 32.1° |
| 2034-03-21 Tue | 1 | — | unknown | — | 79.1° 14:00 | 8.67 | 3% | 23.7° |
| 2034-03-22 Wed | 1 | — | unknown | — | 79.1° 13:55 | 8.61 | 9% | 22.7° |
| 2034-03-23 Thu | 1 | — | unknown | — | 79.1° 13:55 | 8.56 | 17% | 29.9° |
| 2034-03-24 Fri | 0 | — | unknown | — | 79.1° 13:50 | 8.51 | 27% | 40.8° |
| 2034-03-25 Sat | 0 | — | unknown | — | 79.1° 13:45 | 8.46 | 38% | 53.0° |
| 2034-03-26 Sun | 0 | — | unknown | — | 79.1° 14:40 | 8.4 | 49% | 65.4° |
| 2034-03-27 Mon | 0 | — | unknown | — | 79.1° 14:35 | 8.35 | 60% | 77.7° |
| 2034-03-28 Tue | 0 | — | unknown | — | 79.1° 14:35 | 8.3 | 70% | 89.9° |
| 2034-03-29 Wed | 0 | — | unknown | — | 79.1° 14:30 | 8.24 | 79% | 101.8° |
| 2034-03-30 Thu | 0 | — | unknown | — | 79.1° 14:25 | 8.19 | 86% | 113.4° |
| 2034-03-31 Fri | 0 | — | unknown | — | 79.1° 14:20 | 8.13 | 92% | 124.6° |
| 2034-04-01 Sat | 0 | — | unknown | — | 79.1° 14:15 | 8.08 | 97% | 135.3° |
| 2034-04-02 Sun | 0 | — | unknown | — | 79.1° 14:15 | 8.02 | 99% | 145.1° |
| 2034-04-03 Mon | 0 | — | unknown | — | 79.1° 14:10 | 7.97 | 100% | 153.2° |
| 2034-04-04 Tue | 0 | — | unknown | — | 79.1° 14:05 | 7.91 | 99% | 157.7° |
| 2034-04-05 Wed | 0 | — | unknown | — | 79.1° 14:00 | 7.86 | 96% | 156.7° |
| 2034-04-06 Thu | 0 | — | unknown | — | 79.1° 14:00 | 7.8 | 91% | 150.8° |
| 2034-04-07 Fri | 0 | — | unknown | — | 79.1° 13:55 | 7.75 | 85% | 142.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2034-03-09&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.