← 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. |
|---|---|---|---|---|---|---|---|---|
| 2047-03-31 Sun | 10 | — | unknown | 21:25–21:30 (good, 0.08 h) | 72.6° 16:35 | 8.14 | 25% | 10.8° |
| 2047-04-01 Mon | 8 | — | unknown | 21:25–22:10 (marginal, 0.75 h) | 72.6° 16:30 | 8.09 | 33% | 22.9° |
| 2047-04-02 Tue | 6 | — | unknown | 21:25–22:05 (marginal, 0.67 h) | 72.6° 16:25 | 8.03 | 43% | 35.3° |
| 2047-04-03 Wed | 4 | — | unknown | 21:25–21:55 (marginal, 0.5 h) | 72.6° 16:25 | 7.98 | 53% | 48.0° |
| 2047-04-04 Thu | 3 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 72.6° 16:20 | 7.92 | 63% | 61.0° |
| 2047-04-05 Fri | 3 | — | unknown | 21:30–21:45 (marginal, 0.25 h) | 72.6° 16:15 | 7.87 | 74% | 74.6° |
| 2047-04-06 Sat | 3 | — | unknown | 21:30–21:45 (marginal, 0.25 h) | 72.6° 16:10 | 7.81 | 83% | 88.6° |
| 2047-04-07 Sun | 2 | — | unknown | 21:35–21:45 (marginal, 0.17 h) | 72.6° 16:05 | 7.75 | 91% | 103.1° |
| 2047-04-08 Mon | 2 | — | unknown | 21:35–21:40 (marginal, 0.08 h) | 72.6° 16:05 | 7.7 | 96% | 117.9° |
| 2047-04-09 Tue | 2 | — | unknown | 21:35–21:40 (marginal, 0.08 h) | 72.6° 16:00 | 7.64 | 99% | 133.1° |
| 2047-04-10 Wed | 1 | — | unknown | — | 72.6° 15:55 | 7.58 | 99% | 148.4° |
| 2047-04-11 Thu | 1 | — | unknown | 21:00–21:05 (marginal, 0.08 h) | 72.6° 15:50 | 7.53 | 96% | 163.6° |
| 2047-04-12 Fri | 1 | — | unknown | — | 72.6° 15:50 | 7.47 | 91% | 178.6° |
| 2047-04-13 Sat | 1 | — | unknown | — | 72.6° 15:45 | 7.41 | 83% | 166.7° |
| 2047-04-14 Sun | 1 | — | unknown | — | 72.6° 15:40 | 7.36 | 73% | 152.5° |
| 2047-04-15 Mon | 0 | — | unknown | — | 72.6° 15:35 | 7.3 | 63% | 138.7° |
| 2047-04-16 Tue | 0 | — | unknown | — | 72.6° 15:30 | 7.24 | 52% | 125.4° |
| 2047-04-17 Wed | 0 | — | unknown | — | 72.6° 15:30 | 7.18 | 42% | 112.4° |
| 2047-04-18 Thu | 0 | — | unknown | — | 72.6° 15:25 | 7.12 | 32% | 99.9° |
| 2047-04-19 Fri | 0 | — | unknown | — | 72.6° 15:20 | 7.07 | 23% | 87.5° |
| 2047-04-20 Sat | 0 | — | unknown | — | 72.6° 15:15 | 7.01 | 16% | 75.4° |
| 2047-04-21 Sun | 0 | — | unknown | — | 72.6° 15:10 | 6.95 | 10% | 63.4° |
| 2047-04-22 Mon | 0 | — | unknown | — | 72.6° 15:10 | 6.89 | 5% | 51.5° |
| 2047-04-23 Tue | 0 | — | unknown | — | 72.6° 15:05 | 6.83 | 2% | 39.7° |
| 2047-04-24 Wed | 0 | — | unknown | — | 72.6° 15:00 | 6.78 | 0% | 27.9° |
| 2047-04-25 Thu | 0 | — | unknown | — | 72.6° 14:55 | 6.72 | 1% | 16.1° |
| 2047-04-26 Fri | 0 | — | unknown | — | 72.6° 14:55 | 6.66 | 3% | 4.2° |
| 2047-04-27 Sat | 0 | — | unknown | — | 72.6° 14:50 | 6.6 | 7% | 7.8° |
| 2047-04-28 Sun | 0 | — | unknown | — | 72.6° 14:45 | 6.54 | 12% | 19.8° |
| 2047-04-29 Mon | 0 | — | unknown | — | 72.6° 14:40 | 6.48 | 19% | 32.1° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2047-03-31&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.