← 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. |
|---|---|---|---|---|---|---|---|---|
| 2045-03-04 Sat | 23 | — | unknown | 04:25–05:20 (good, 0.92 h) | 87.2° 10:30 | 9.49 | 96% | 121.5° |
| 2045-03-05 Sun | 24 | — | unknown | 04:25–05:20 (good, 0.92 h) | 87.2° 10:25 | 9.44 | 91% | 117.5° |
| 2045-03-06 Mon | 24 | — | unknown | 04:20–05:15 (good, 0.92 h) | 87.3° 10:20 | 9.4 | 84% | 112.1° |
| 2045-03-07 Tue | 24 | — | unknown | 04:15–05:15 (good, 1.0 h) | 87.3° 10:15 | 9.35 | 75% | 105.9° |
| 2045-03-08 Wed | 25 | — | unknown | 04:15–05:15 (good, 1.0 h) | 87.2° 10:10 | 9.3 | 66% | 99.2° |
| 2045-03-09 Thu | 25 | — | unknown | 04:05–05:10 (good, 1.08 h) | 87.2° 10:10 | 9.25 | 56% | 92.4° |
| 2045-03-10 Fri | 27 | — | unknown | 04:00–05:10 (good, 1.17 h) | 87.3° 10:05 | 9.2 | 46% | 85.7° |
| 2045-03-11 Sat | 30 | — | unknown | 03:55–05:10 (good, 1.25 h) | 87.3° 10:00 | 9.16 | 37% | 79.2° |
| 2045-03-12 Sun | 32 | — | unknown | 03:40–05:05 (good, 1.42 h) | 87.2° 09:55 | 9.11 | 28% | 73.1° |
| 2045-03-13 Mon | 36 | — | unknown | 03:35–05:05 (good, 1.5 h) | 87.2° 09:50 | 9.06 | 20% | 67.6° |
| 2045-03-14 Tue | 37 | — | unknown | 03:35–05:00 (good, 1.42 h) | 87.2° 09:50 | 9.01 | 13% | 62.9° |
| 2045-03-15 Wed | 38 | — | unknown | 03:30–05:00 (good, 1.5 h) | 87.3° 09:45 | 8.96 | 7% | 59.3° |
| 2045-03-16 Thu | 40 | — | unknown | 03:25–05:00 (good, 1.58 h) | 87.3° 09:40 | 8.91 | 3% | 57.0° |
| 2045-03-17 Fri | 40 | — | unknown | 03:20–04:55 (good, 1.58 h) | 87.2° 09:35 | 8.86 | 1% | 56.4° |
| 2045-03-18 Sat | 41 | — | unknown | 03:20–04:55 (good, 1.58 h) | 87.2° 09:35 | 8.8 | 0% | 57.5° |
| 2045-03-19 Sun | 42 | — | unknown | 03:15–04:55 (good, 1.67 h) | 87.2° 09:30 | 8.75 | 2% | 60.3° |
| 2045-03-20 Mon | 42 | — | unknown | 03:10–04:50 (good, 1.67 h) | 87.3° 09:25 | 8.7 | 5% | 64.7° |
| 2045-03-21 Tue | 44 | — | unknown | 03:05–04:50 (good, 1.75 h) | 87.3° 09:20 | 8.65 | 11% | 70.4° |
| 2045-03-22 Wed | 45 | — | unknown | 03:00–04:50 (good, 1.83 h) | 87.2° 09:15 | 8.6 | 18% | 76.9° |
| 2045-03-23 Thu | 44 | — | unknown | 03:00–04:45 (good, 1.75 h) | 87.2° 09:15 | 8.54 | 27% | 84.1° |
| 2045-03-24 Fri | 46 | — | unknown | 02:55–04:45 (good, 1.83 h) | 87.3° 09:10 | 8.49 | 38% | 91.7° |
| 2045-03-25 Sat | 46 | — | unknown | 02:50–05:40 (good, 1.83 h) | 87.3° 10:05 | 8.44 | 49% | 99.3° |
| 2045-03-26 Sun | 47 | — | unknown | 03:55–05:40 (good, 1.75 h) | 87.3° 10:00 | 8.39 | 60% | 106.6° |
| 2045-03-27 Mon | 47 | — | unknown | 03:50–05:40 (good, 1.83 h) | 87.2° 09:55 | 8.33 | 71% | 113.2° |
| 2045-03-28 Tue | 46 | — | unknown | 03:50–05:35 (good, 1.75 h) | 87.2° 09:55 | 8.28 | 81% | 118.6° |
| 2045-03-29 Wed | 43 | — | unknown | 03:45–05:35 (good, 1.83 h) | 87.3° 09:50 | 8.22 | 89% | 122.3° |
| 2045-03-30 Thu | 42 | — | unknown | 03:45–05:35 (good, 1.83 h) | 87.3° 09:45 | 8.17 | 95% | 123.7° |
| 2045-03-31 Fri | 42 | — | unknown | 03:40–05:30 (good, 1.83 h) | 87.2° 09:40 | 8.12 | 99% | 122.7° |
| 2045-04-01 Sat | 42 | — | unknown | 03:35–05:30 (good, 1.92 h) | 87.2° 09:35 | 8.06 | 100% | 119.4° |
| 2045-04-02 Sun | 40 | — | unknown | 03:35–05:25 (good, 1.83 h) | 87.2° 09:35 | 8.01 | 98% | 114.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2045-03-04&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.