← 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. |
|---|---|---|---|---|---|---|---|---|
| 2048-03-28 Sat | 14 | — | unknown | 20:20–20:40 (good, 0.33 h) | 72.6° 15:45 | 8.26 | 98% | 114.0° |
| 2048-03-29 Sun | 15 | — | unknown | 21:20–21:40 (good, 0.33 h) | 72.6° 16:40 | 8.21 | 100% | 128.3° |
| 2048-03-30 Mon | 12 | — | unknown | 21:25–21:40 (good, 0.25 h) | 72.6° 16:35 | 8.15 | 99% | 142.8° |
| 2048-03-31 Tue | 13 | — | unknown | 21:25–21:45 (good, 0.33 h) | 72.6° 16:30 | 8.1 | 95% | 157.4° |
| 2048-04-01 Wed | 11 | — | unknown | 21:25–21:40 (good, 0.25 h) | 72.6° 16:30 | 8.05 | 89% | 172.1° |
| 2048-04-02 Thu | 10 | — | unknown | 21:25–21:35 (good, 0.17 h) | 72.6° 16:25 | 7.99 | 80% | 173.0° |
| 2048-04-03 Fri | 8 | — | unknown | 20:55–22:00 (marginal, 1.08 h) | 72.6° 16:20 | 7.93 | 70% | 158.6° |
| 2048-04-04 Sat | 7 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 72.6° 16:15 | 7.88 | 59% | 144.4° |
| 2048-04-05 Sun | 6 | — | unknown | 20:55–21:25 (marginal, 0.5 h) | 72.6° 16:10 | 7.82 | 48% | 130.4° |
| 2048-04-06 Mon | 5 | — | unknown | 20:55–21:20 (marginal, 0.42 h) | 72.6° 16:10 | 7.77 | 37% | 116.7° |
| 2048-04-07 Tue | 3 | — | unknown | 21:00–21:15 (marginal, 0.25 h) | 72.6° 16:05 | 7.71 | 27% | 103.3° |
| 2048-04-08 Wed | 3 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 72.6° 16:00 | 7.65 | 18% | 90.1° |
| 2048-04-09 Thu | 2 | — | unknown | 21:00–21:10 (marginal, 0.17 h) | 72.6° 15:55 | 7.6 | 11% | 77.1° |
| 2048-04-10 Fri | 1 | — | unknown | 21:00–21:05 (marginal, 0.08 h) | 72.6° 15:55 | 7.54 | 5% | 64.3° |
| 2048-04-11 Sat | 1 | — | unknown | — | 72.6° 15:50 | 7.48 | 2% | 51.7° |
| 2048-04-12 Sun | 1 | — | unknown | — | 72.6° 15:45 | 7.43 | 0% | 39.3° |
| 2048-04-13 Mon | 1 | — | unknown | — | 72.6° 15:40 | 7.37 | 1% | 27.0° |
| 2048-04-14 Tue | 0 | — | unknown | — | 72.6° 15:35 | 7.31 | 3% | 15.0° |
| 2048-04-15 Wed | 0 | — | unknown | — | 72.6° 15:35 | 7.25 | 7% | 3.4° |
| 2048-04-16 Thu | 0 | — | unknown | — | 72.6° 15:30 | 7.2 | 12% | 9.0° |
| 2048-04-17 Fri | 0 | — | unknown | — | 72.6° 15:25 | 7.14 | 19% | 20.8° |
| 2048-04-18 Sat | 0 | — | unknown | — | 72.6° 15:20 | 7.08 | 27% | 32.6° |
| 2048-04-19 Sun | 0 | — | unknown | — | 72.6° 15:15 | 7.02 | 36% | 44.5° |
| 2048-04-20 Mon | 0 | — | unknown | — | 72.6° 15:15 | 6.96 | 45% | 56.6° |
| 2048-04-21 Tue | 0 | — | unknown | — | 72.6° 15:10 | 6.91 | 55% | 68.9° |
| 2048-04-22 Wed | 0 | — | unknown | — | 72.6° 15:05 | 6.85 | 65% | 81.5° |
| 2048-04-23 Thu | 0 | — | unknown | — | 72.6° 15:00 | 6.79 | 75% | 94.6° |
| 2048-04-24 Fri | 0 | — | unknown | — | 72.6° 15:00 | 6.73 | 83% | 108.0° |
| 2048-04-25 Sat | 0 | — | unknown | — | 72.6° 14:55 | 6.67 | 91% | 122.0° |
| 2048-04-26 Sun | 0 | — | unknown | — | 72.6° 14:50 | 6.61 | 96% | 136.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2048-03-28&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.