← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-05-11 Wed | 3 | — | unknown | 04:05–04:15 (marginal, 0.17 h) | 89.7° 10:45 | 5.78 | 94% | 146.2° |
| 2033-05-12 Thu | 3 | — | unknown | 04:45–04:55 (marginal, 0.17 h) | 89.8° 10:40 | 5.72 | 98% | 144.6° |
| 2033-05-13 Fri | 3 | — | unknown | 04:00–04:10 (marginal, 0.17 h) | 89.7° 10:35 | 5.67 | 100% | 139.8° |
| 2033-05-14 Sat | 4 | — | unknown | 03:55–04:10 (marginal, 0.25 h) | 89.5° 10:30 | 5.62 | 100% | 132.4° |
| 2033-05-15 Sun | 4 | — | unknown | 03:50–04:05 (marginal, 0.25 h) | 89.6° 10:30 | 5.56 | 98% | 123.5° |
| 2033-05-16 Mon | 4 | — | unknown | 03:45–04:05 (marginal, 0.33 h) | 89.7° 10:25 | 5.51 | 94% | 113.6° |
| 2033-05-17 Tue | 4 | — | unknown | 03:45–04:05 (marginal, 0.33 h) | 89.7° 10:20 | 5.46 | 87% | 103.0° |
| 2033-05-18 Wed | 4 | — | unknown | 03:40–04:00 (marginal, 0.33 h) | 89.6° 10:15 | 5.41 | 80% | 92.0° |
| 2033-05-19 Thu | 4 | — | unknown | 03:35–04:00 (marginal, 0.42 h) | 89.5° 10:15 | 5.35 | 70% | 80.9° |
| 2033-05-20 Fri | 5 | — | unknown | 03:30–04:00 (marginal, 0.5 h) | 89.6° 10:10 | 5.3 | 60% | 69.7° |
| 2033-05-21 Sat | 6 | — | unknown | 03:30–04:00 (marginal, 0.5 h) | 89.8° 10:05 | 5.26 | 48% | 58.7° |
| 2033-05-22 Sun | 7 | — | unknown | 03:25–03:55 (marginal, 0.5 h) | 89.7° 10:00 | 5.21 | 37% | 48.6° |
| 2033-05-23 Mon | 8 | — | unknown | 03:20–03:55 (marginal, 0.58 h) | 89.6° 09:55 | 5.16 | 26% | 40.1° |
| 2033-05-24 Tue | 11 | — | unknown | 03:50–03:55 (good, 0.08 h) | 89.5° 09:55 | 5.11 | 16% | 34.7° |
| 2033-05-25 Wed | 12 | — | unknown | 03:45–03:55 (good, 0.17 h) | 89.7° 09:50 | 5.07 | 9% | 34.4° |
| 2033-05-26 Thu | 12 | — | unknown | 03:40–03:50 (good, 0.17 h) | 89.8° 09:45 | 5.02 | 3% | 39.1° |
| 2033-05-27 Fri | 14 | — | unknown | 03:35–03:50 (good, 0.25 h) | 89.7° 09:40 | 4.98 | 0% | 47.3° |
| 2033-05-28 Sat | 15 | — | unknown | 03:35–03:50 (good, 0.25 h) | 89.5° 09:35 | 4.94 | 0% | 57.3° |
| 2033-05-29 Sun | 16 | — | unknown | 03:30–03:50 (good, 0.33 h) | 89.6° 09:35 | 4.9 | 3% | 68.1° |
| 2033-05-30 Mon | 17 | — | unknown | 03:25–03:45 (good, 0.33 h) | 89.7° 09:30 | 4.86 | 8% | 79.1° |
| 2033-05-31 Tue | 18 | — | unknown | 03:20–03:45 (good, 0.42 h) | 89.7° 09:25 | 4.82 | 14% | 90.0° |
| 2033-06-01 Wed | 19 | — | unknown | 03:20–03:45 (good, 0.42 h) | 89.6° 09:20 | 4.79 | 22% | 100.6° |
| 2033-06-02 Thu | 21 | — | unknown | 03:15–03:45 (good, 0.5 h) | 89.5° 09:20 | 4.75 | 31% | 110.7° |
| 2033-06-03 Fri | 23 | — | unknown | 03:10–03:45 (good, 0.58 h) | 89.6° 09:15 | 4.72 | 40% | 120.3° |
| 2033-06-04 Sat | 23 | — | unknown | 03:05–03:45 (good, 0.67 h) | 89.8° 09:10 | 4.68 | 50% | 129.1° |
| 2033-06-05 Sun | 24 | — | unknown | 03:00–03:40 (good, 0.67 h) | 89.7° 09:05 | 4.65 | 59% | 136.7° |
| 2033-06-06 Mon | 25 | — | unknown | 03:00–03:40 (good, 0.67 h) | 89.6° 09:00 | 4.63 | 68% | 142.6° |
| 2033-06-07 Tue | 26 | — | unknown | 03:00–03:40 (good, 0.67 h) | 89.5° 09:00 | 4.6 | 76% | 145.8° |
| 2033-06-08 Wed | 27 | — | unknown | 03:00–03:40 (good, 0.67 h) | 89.7° 08:55 | 4.57 | 84% | 145.4° |
| 2033-06-09 Thu | 25 | — | unknown | 02:55–03:40 (good, 0.75 h) | 89.8° 08:50 | 4.55 | 91% | 141.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-05-11&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.