← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-03-29 Tue | 18 | — | unknown | 21:20–21:50 (good, 0.5 h) | 72.6° 16:40 | 8.23 | 1% | 61.7° |
| 2033-03-30 Wed | 16 | — | unknown | 21:20–21:50 (good, 0.5 h) | 72.6° 16:35 | 8.18 | 0% | 46.7° |
| 2033-03-31 Thu | 13 | — | unknown | 21:25–21:45 (good, 0.33 h) | 72.6° 16:35 | 8.12 | 2% | 31.9° |
| 2033-04-01 Fri | 11 | — | unknown | 21:25–21:35 (good, 0.17 h) | 72.6° 16:30 | 8.07 | 7% | 17.8° |
| 2033-04-02 Sat | 9 | — | unknown | 21:25–21:30 (good, 0.08 h) | 72.6° 16:25 | 8.01 | 14% | 7.7° |
| 2033-04-03 Sun | 6 | — | unknown | 21:30–22:00 (marginal, 0.5 h) | 72.6° 16:20 | 7.96 | 23% | 14.3° |
| 2033-04-04 Mon | 4 | — | unknown | 21:30–21:55 (marginal, 0.42 h) | 72.6° 16:15 | 7.9 | 33% | 26.7° |
| 2033-04-05 Tue | 3 | — | unknown | 21:30–21:50 (marginal, 0.33 h) | 72.6° 16:15 | 7.84 | 43% | 39.4° |
| 2033-04-06 Wed | 2 | — | unknown | 21:30–21:45 (marginal, 0.25 h) | 72.6° 16:10 | 7.79 | 53% | 51.9° |
| 2033-04-07 Thu | 2 | — | unknown | 21:35–21:40 (marginal, 0.08 h) | 72.6° 16:05 | 7.73 | 63% | 64.1° |
| 2033-04-08 Fri | 1 | — | unknown | — | 72.6° 16:00 | 7.68 | 72% | 76.1° |
| 2033-04-09 Sat | 1 | — | unknown | — | 72.6° 15:55 | 7.62 | 80% | 87.9° |
| 2033-04-10 Sun | 1 | — | unknown | — | 72.6° 15:55 | 7.56 | 87% | 99.7° |
| 2033-04-11 Mon | 1 | — | unknown | — | 72.6° 15:50 | 7.51 | 93% | 111.4° |
| 2033-04-12 Tue | 1 | — | unknown | — | 72.6° 15:45 | 7.45 | 97% | 123.1° |
| 2033-04-13 Wed | 1 | — | unknown | — | 72.6° 15:40 | 7.39 | 99% | 134.8° |
| 2033-04-14 Thu | 0 | — | unknown | — | 72.6° 15:40 | 7.33 | 100% | 146.5° |
| 2033-04-15 Fri | 0 | — | unknown | — | 72.6° 15:35 | 7.28 | 99% | 158.1° |
| 2033-04-16 Sat | 0 | — | unknown | — | 72.6° 15:30 | 7.22 | 96% | 168.8° |
| 2033-04-17 Sun | 0 | — | unknown | — | 72.6° 15:25 | 7.16 | 91% | 171.6° |
| 2033-04-18 Mon | 0 | — | unknown | — | 72.6° 15:20 | 7.1 | 84% | 161.9° |
| 2033-04-19 Tue | 0 | — | unknown | — | 72.6° 15:20 | 7.04 | 76% | 149.9° |
| 2033-04-20 Wed | 0 | — | unknown | — | 72.6° 15:15 | 6.99 | 67% | 137.2° |
| 2033-04-21 Thu | 0 | — | unknown | — | 72.6° 15:10 | 6.93 | 56% | 124.0° |
| 2033-04-22 Fri | 0 | — | unknown | — | 72.6° 15:05 | 6.87 | 45% | 110.6° |
| 2033-04-23 Sat | 0 | — | unknown | — | 72.6° 15:00 | 6.81 | 34% | 96.7° |
| 2033-04-24 Sun | 0 | — | unknown | — | 72.6° 15:00 | 6.75 | 24% | 82.5° |
| 2033-04-25 Mon | 0 | — | unknown | — | 72.6° 14:55 | 6.69 | 14% | 68.0° |
| 2033-04-26 Tue | 0 | — | unknown | — | 72.6° 14:50 | 6.64 | 7% | 53.3° |
| 2033-04-27 Wed | 0 | — | unknown | — | 72.6° 14:45 | 6.58 | 2% | 38.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-03-29&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.