← 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. |
|---|---|---|---|---|---|---|---|---|
| 2030-03-08 Fri | 14 | — | unknown | 19:55–20:15 (good, 0.33 h) | 79.1° 14:50 | 9.32 | 20% | 17.9° |
| 2030-03-09 Sat | 10 | — | unknown | 19:55–20:00 (good, 0.08 h) | 79.1° 14:50 | 9.27 | 28% | 25.8° |
| 2030-03-10 Sun | 8 | — | unknown | 19:55–20:45 (marginal, 0.83 h) | 79.1° 14:45 | 9.22 | 37% | 35.8° |
| 2030-03-11 Mon | 6 | — | unknown | 20:00–20:40 (marginal, 0.67 h) | 79.1° 14:40 | 9.17 | 46% | 46.6° |
| 2030-03-12 Tue | 4 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 79.1° 14:35 | 9.12 | 56% | 57.9° |
| 2030-03-13 Wed | 4 | — | unknown | 20:00–20:25 (marginal, 0.42 h) | 79.1° 14:30 | 9.07 | 65% | 69.6° |
| 2030-03-14 Thu | 3 | — | unknown | 20:00–20:25 (marginal, 0.42 h) | 79.1° 14:30 | 9.02 | 74% | 81.6° |
| 2030-03-15 Fri | 3 | — | unknown | 20:05–20:25 (marginal, 0.33 h) | 79.1° 14:25 | 8.97 | 83% | 94.0° |
| 2030-03-16 Sat | 3 | — | unknown | 20:05–20:20 (marginal, 0.25 h) | 79.1° 14:20 | 8.92 | 90% | 106.8° |
| 2030-03-17 Sun | 3 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 79.1° 14:15 | 8.87 | 96% | 119.9° |
| 2030-03-18 Mon | 2 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 79.1° 14:10 | 8.82 | 99% | 133.2° |
| 2030-03-19 Tue | 1 | — | unknown | — | 79.1° 14:10 | 8.77 | 100% | 146.3° |
| 2030-03-20 Wed | 1 | — | unknown | — | 79.1° 14:05 | 8.72 | 98% | 158.0° |
| 2030-03-21 Thu | 1 | — | unknown | — | 79.1° 14:00 | 8.67 | 93% | 164.3° |
| 2030-03-22 Fri | 1 | — | unknown | — | 79.1° 13:55 | 8.62 | 86% | 159.2° |
| 2030-03-23 Sat | 1 | — | unknown | — | 79.1° 13:55 | 8.56 | 77% | 147.8° |
| 2030-03-24 Sun | 0 | — | unknown | — | 79.1° 13:50 | 8.51 | 66% | 134.8° |
| 2030-03-25 Mon | 0 | — | unknown | — | 79.1° 13:45 | 8.46 | 55% | 121.6° |
| 2030-03-26 Tue | 0 | — | unknown | — | 79.1° 13:40 | 8.41 | 44% | 108.4° |
| 2030-03-27 Wed | 0 | — | unknown | — | 79.1° 13:35 | 8.35 | 34% | 95.3° |
| 2030-03-28 Thu | 0 | — | unknown | — | 79.1° 13:35 | 8.3 | 24% | 82.5° |
| 2030-03-29 Fri | 0 | — | unknown | — | 79.1° 13:30 | 8.24 | 16% | 70.0° |
| 2030-03-30 Sat | 0 | — | unknown | — | 79.1° 13:25 | 8.19 | 9% | 57.7° |
| 2030-03-31 Sun | 0 | — | unknown | — | 79.1° 14:20 | 8.14 | 4% | 45.8° |
| 2030-04-01 Mon | 0 | — | unknown | — | 79.1° 14:15 | 8.08 | 1% | 34.5° |
| 2030-04-02 Tue | 0 | — | unknown | — | 79.1° 14:15 | 8.03 | 0% | 24.4° |
| 2030-04-03 Wed | 0 | — | unknown | — | 79.1° 14:10 | 7.97 | 1% | 17.1° |
| 2030-04-04 Thu | 0 | — | unknown | — | 79.1° 14:05 | 7.91 | 4% | 16.6° |
| 2030-04-05 Fri | 0 | — | unknown | — | 79.1° 14:00 | 7.86 | 8% | 23.2° |
| 2030-04-06 Sat | 0 | — | unknown | — | 79.1° 13:55 | 7.8 | 14% | 32.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2030-03-08&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.