← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-03-27 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° |
| 2033-04-09 Sat | 1 | — | unknown | — | 42.9° 17:45 | 7.62 | 80% | 65.6° |
| 2033-04-10 Sun | 1 | — | unknown | — | 42.9° 17:40 | 7.56 | 87% | 76.3° |
| 2033-04-11 Mon | 1 | — | unknown | — | 42.9° 17:35 | 7.51 | 93% | 87.1° |
| 2033-04-12 Tue | 0 | — | unknown | — | 42.9° 17:35 | 7.45 | 97% | 97.9° |
| 2033-04-13 Wed | 0 | — | unknown | — | 42.9° 17:30 | 7.39 | 99% | 108.7° |
| 2033-04-14 Thu | 0 | — | unknown | — | 42.9° 17:25 | 7.33 | 100% | 119.4° |
| 2033-04-15 Fri | 0 | — | unknown | — | 42.9° 17:20 | 7.28 | 99% | 129.9° |
| 2033-04-16 Sat | 0 | — | unknown | — | 42.9° 17:20 | 7.22 | 96% | 139.9° |
| 2033-04-17 Sun | 0 | — | unknown | — | 42.9° 17:15 | 7.16 | 91% | 148.6° |
| 2033-04-18 Mon | 0 | — | unknown | — | 42.9° 17:10 | 7.1 | 84% | 154.7° |
| 2033-04-19 Tue | 0 | — | unknown | — | 42.9° 17:05 | 7.04 | 76% | 155.6° |
| 2033-04-20 Wed | 0 | — | unknown | — | 42.9° 17:00 | 6.99 | 67% | 150.6° |
| 2033-04-21 Thu | 0 | — | unknown | — | 42.9° 17:00 | 6.93 | 56% | 141.7° |
| 2033-04-22 Fri | 0 | — | unknown | — | 42.9° 16:55 | 6.87 | 45% | 130.7° |
| 2033-04-23 Sat | 0 | — | unknown | — | 42.9° 16:50 | 6.81 | 34% | 118.6° |
| 2033-04-24 Sun | 0 | — | unknown | — | 42.9° 16:45 | 6.75 | 24% | 105.7° |
| 2033-04-25 Mon | 0 | — | unknown | — | 42.9° 16:40 | 6.69 | 14% | 92.3° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-03-27&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.