← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-03-10 Thu | 10 | — | unknown | 19:55–21:55 (marginal, 2.0 h) | 42.9° 18:45 | 9.21 | 78% | 37.8° |
| 2033-03-11 Fri | 10 | — | unknown | 20:00–21:50 (marginal, 1.83 h) | 42.9° 18:40 | 9.16 | 85% | 47.5° |
| 2033-03-12 Sat | 12 | — | unknown | 20:00–21:55 (marginal, 1.92 h) | 42.9° 18:35 | 9.11 | 91% | 57.8° |
| 2033-03-13 Sun | 14 | — | unknown | 20:00–22:00 (marginal, 2.0 h) | 42.9° 18:30 | 9.06 | 96% | 68.4° |
| 2033-03-14 Mon | 18 | — | unknown | 20:00–22:05 (marginal, 2.08 h) | 42.9° 18:30 | 9.01 | 99% | 79.2° |
| 2033-03-15 Tue | 22 | — | unknown | 20:05–20:45 (good, 0.67 h) | 42.9° 18:25 | 8.96 | 100% | 89.9° |
| 2033-03-16 Wed | 26 | — | unknown | 20:05–21:15 (good, 1.17 h) | 42.9° 18:20 | 8.91 | 99% | 100.8° |
| 2033-03-17 Thu | 29 | — | unknown | 20:05–21:20 (good, 1.25 h) | 42.9° 18:15 | 8.86 | 97% | 111.5° |
| 2033-03-18 Fri | 34 | — | unknown | 20:05–21:25 (good, 1.33 h) | 42.9° 18:10 | 8.81 | 93% | 122.1° |
| 2033-03-19 Sat | 33 | — | unknown | 20:10–21:25 (good, 1.25 h) | 42.9° 18:10 | 8.76 | 87% | 132.4° |
| 2033-03-20 Sun | 31 | — | unknown | 20:10–21:25 (good, 1.25 h) | 42.9° 18:05 | 8.71 | 80% | 142.1° |
| 2033-03-21 Mon | 30 | — | unknown | 20:10–21:20 (good, 1.17 h) | 42.9° 18:00 | 8.65 | 71% | 150.4° |
| 2033-03-22 Tue | 28 | — | unknown | 20:10–21:15 (good, 1.08 h) | 42.9° 17:55 | 8.6 | 62% | 155.5° |
| 2033-03-23 Wed | 26 | — | unknown | 20:15–21:10 (good, 0.92 h) | 42.9° 17:50 | 8.55 | 52% | 154.9° |
| 2033-03-24 Thu | 25 | — | unknown | 20:15–21:05 (good, 0.83 h) | 42.9° 17:50 | 8.5 | 41% | 148.5° |
| 2033-03-25 Fri | 24 | — | unknown | 20:15–21:05 (good, 0.83 h) | 42.9° 17:45 | 8.44 | 30% | 138.6° |
| 2033-03-26 Sat | 22 | — | unknown | 20:15–21:00 (good, 0.75 h) | 42.9° 17:40 | 8.39 | 20% | 126.8° |
| 2033-03-27 Sun | 20 | — | unknown | 21:20–21:55 (good, 0.58 h) | 42.9° 18:35 | 8.34 | 12% | 113.9° |
| 2033-03-28 Mon | 18 | — | unknown | 21:20–21:50 (good, 0.5 h) | 42.9° 18:30 | 8.28 | 5% | 100.4° |
| 2033-03-29 Tue | 17 | — | unknown | 21:20–21:50 (good, 0.5 h) | 42.9° 18:30 | 8.23 | 1% | 86.6° |
| 2033-03-30 Wed | 15 | — | unknown | 21:20–21:45 (good, 0.42 h) | 42.9° 18:25 | 8.18 | 0% | 72.7° |
| 2033-03-31 Thu | 12 | — | unknown | 21:25–21:40 (good, 0.25 h) | 42.9° 18:20 | 8.12 | 2% | 59.2° |
| 2033-04-01 Fri | 10 | — | unknown | 21:25–21:35 (good, 0.17 h) | 42.9° 18:15 | 8.07 | 7% | 46.4° |
| 2033-04-02 Sat | 8 | — | unknown | 20:50–22:05 (marginal, 1.25 h) | 42.9° 18:15 | 8.01 | 14% | 35.2° |
| 2033-04-03 Sun | 6 | — | unknown | 21:30–22:00 (marginal, 0.5 h) | 42.9° 18:10 | 7.96 | 23% | 26.9° |
| 2033-04-04 Mon | 4 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 42.9° 18:05 | 7.9 | 33% | 24.0° |
| 2033-04-05 Tue | 3 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 42.9° 18:00 | 7.84 | 43% | 27.6° |
| 2033-04-06 Wed | 2 | — | unknown | 21:30–21:35 (marginal, 0.08 h) | 42.9° 17:55 | 7.79 | 53% | 35.3° |
| 2033-04-07 Thu | 1 | — | unknown | — | 42.9° 17:55 | 7.73 | 63% | 44.8° |
| 2033-04-08 Fri | 1 | — | unknown | — | 42.9° 17:50 | 7.68 | 72% | 55.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-03-10&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.