← 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. |
|---|---|---|---|---|---|---|---|---|
| 2048-03-21 Sat | 14 | — | unknown | 20:10–21:45 (marginal, 1.58 h) | 42.9° 18:00 | 8.64 | 43% | 29.4° |
| 2048-03-22 Sun | 10 | — | unknown | 20:10–21:35 (marginal, 1.42 h) | 42.9° 17:55 | 8.58 | 52% | 30.9° |
| 2048-03-23 Mon | 8 | — | unknown | 20:15–21:20 (marginal, 1.08 h) | 42.9° 17:50 | 8.53 | 62% | 36.2° |
| 2048-03-24 Tue | 7 | — | unknown | 20:15–21:10 (marginal, 0.92 h) | 42.9° 17:50 | 8.48 | 71% | 44.2° |
| 2048-03-25 Wed | 7 | — | unknown | 20:15–21:05 (marginal, 0.83 h) | 42.9° 17:45 | 8.42 | 80% | 53.8° |
| 2048-03-26 Thu | 7 | — | unknown | 20:15–21:10 (marginal, 0.92 h) | 42.9° 17:40 | 8.37 | 88% | 64.5° |
| 2048-03-27 Fri | 8 | — | unknown | 20:20–21:10 (marginal, 0.83 h) | 42.9° 17:35 | 8.32 | 94% | 76.0° |
| 2048-03-28 Sat | 9 | — | unknown | 20:20–21:15 (marginal, 0.92 h) | 42.9° 17:30 | 8.26 | 98% | 88.1° |
| 2048-03-29 Sun | 11 | — | unknown | 20:45–22:20 (marginal, 1.58 h) | 42.9° 18:30 | 8.21 | 100% | 100.5° |
| 2048-03-30 Mon | 10 | — | unknown | 21:25–21:30 (good, 0.08 h) | 42.9° 18:25 | 8.15 | 99% | 113.0° |
| 2048-03-31 Tue | 12 | — | unknown | 21:25–21:40 (good, 0.25 h) | 42.9° 18:20 | 8.1 | 95% | 125.1° |
| 2048-04-01 Wed | 10 | — | unknown | 21:25–21:35 (good, 0.17 h) | 42.9° 18:15 | 8.05 | 89% | 136.3° |
| 2048-04-02 Thu | 9 | — | unknown | 21:25–21:30 (good, 0.08 h) | 42.9° 18:10 | 7.99 | 80% | 145.4° |
| 2048-04-03 Fri | 7 | — | unknown | 21:30–22:00 (marginal, 0.5 h) | 42.9° 18:10 | 7.93 | 70% | 150.4° |
| 2048-04-04 Sat | 6 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 42.9° 18:05 | 7.88 | 59% | 149.4° |
| 2048-04-05 Sun | 5 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 42.9° 18:00 | 7.82 | 48% | 143.2° |
| 2048-04-06 Mon | 4 | — | unknown | 21:30–21:45 (marginal, 0.25 h) | 42.9° 17:55 | 7.77 | 37% | 134.1° |
| 2048-04-07 Tue | 3 | — | unknown | 21:35–21:45 (marginal, 0.17 h) | 42.9° 17:50 | 7.71 | 27% | 123.7° |
| 2048-04-08 Wed | 3 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 42.9° 17:50 | 7.65 | 18% | 112.7° |
| 2048-04-09 Thu | 2 | — | unknown | 21:00–21:05 (marginal, 0.08 h) | 42.9° 17:45 | 7.6 | 11% | 101.5° |
| 2048-04-10 Fri | 1 | — | unknown | — | 42.9° 17:40 | 7.54 | 5% | 90.4° |
| 2048-04-11 Sat | 1 | — | unknown | — | 42.9° 17:35 | 7.48 | 2% | 79.4° |
| 2048-04-12 Sun | 1 | — | unknown | — | 42.9° 17:35 | 7.43 | 0% | 68.7° |
| 2048-04-13 Mon | 1 | — | unknown | — | 42.9° 17:30 | 7.37 | 1% | 58.5° |
| 2048-04-14 Tue | 0 | — | unknown | — | 42.9° 17:25 | 7.31 | 3% | 48.9° |
| 2048-04-15 Wed | 0 | — | unknown | — | 42.9° 17:20 | 7.25 | 7% | 40.3° |
| 2048-04-16 Thu | 0 | — | unknown | — | 42.9° 17:15 | 7.2 | 12% | 33.5° |
| 2048-04-17 Fri | 0 | — | unknown | — | 42.9° 17:15 | 7.14 | 19% | 29.6° |
| 2048-04-18 Sat | 0 | — | unknown | — | 42.9° 17:10 | 7.08 | 27% | 29.7° |
| 2048-04-19 Sun | 0 | — | unknown | — | 42.9° 17:05 | 7.02 | 36% | 33.9° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2048-03-21&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.