← 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. |
|---|---|---|---|---|---|---|---|---|
| 2045-02-21 Tue | 68 | — | unknown | 02:55–05:35 (good, 2.67 h) | 87.1° 08:50 | 9.98 | 22% | 92.8° |
| 2045-02-22 Wed | 69 | — | unknown | 02:50–05:35 (good, 2.75 h) | 87.1° 08:45 | 9.94 | 32% | 98.1° |
| 2045-02-23 Thu | 71 | — | unknown | 02:45–05:35 (good, 2.83 h) | 87.1° 08:40 | 9.9 | 42% | 103.2° |
| 2045-02-24 Fri | 71 | — | unknown | 02:45–05:30 (good, 2.75 h) | 87.1° 08:35 | 9.85 | 53% | 107.7° |
| 2045-02-25 Sat | 72 | — | unknown | 02:45–05:30 (good, 2.75 h) | 87.1° 08:35 | 9.81 | 64% | 111.3° |
| 2045-02-26 Sun | 70 | — | unknown | 02:45–05:30 (good, 2.75 h) | 87.1° 08:30 | 9.76 | 74% | 113.8° |
| 2045-02-27 Mon | 68 | — | unknown | 02:45–05:25 (good, 2.67 h) | 87.1° 08:25 | 9.72 | 84% | 114.7° |
| 2045-02-28 Tue | 61 | — | unknown | 02:45–05:25 (good, 2.67 h) | 87.1° 08:20 | 9.67 | 92% | 113.9° |
| 2045-03-01 Wed | 58 | — | unknown | 02:45–05:25 (good, 2.67 h) | 87.1° 08:20 | 9.63 | 97% | 111.4° |
| 2045-03-02 Thu | 54 | — | unknown | 02:45–05:25 (good, 2.67 h) | 87.1° 08:15 | 9.58 | 100% | 107.4° |
| 2045-03-03 Fri | 51 | — | unknown | 02:45–05:20 (good, 2.58 h) | 87.1° 08:10 | 9.54 | 99% | 102.4° |
| 2045-03-04 Sat | 48 | — | unknown | 02:50–05:20 (good, 2.5 h) | 87.1° 08:05 | 9.49 | 96% | 96.8° |
| 2045-03-05 Sun | 48 | — | unknown | 02:50–05:20 (good, 2.5 h) | 87.1° 08:00 | 9.44 | 91% | 91.0° |
| 2045-03-06 Mon | 48 | — | unknown | 02:35–05:15 (good, 2.67 h) | 87.1° 08:00 | 9.4 | 84% | 85.3° |
| 2045-03-07 Tue | 50 | — | unknown | 02:25–05:15 (good, 2.83 h) | 87.1° 07:55 | 9.35 | 75% | 80.0° |
| 2045-03-08 Wed | 54 | — | unknown | 02:15–05:15 (good, 3.0 h) | 87.1° 07:50 | 9.3 | 66% | 75.3° |
| 2045-03-09 Thu | 60 | — | unknown | 02:10–05:10 (good, 3.0 h) | 87.1° 07:45 | 9.25 | 56% | 71.4° |
| 2045-03-10 Fri | 67 | — | unknown | 01:50–05:10 (good, 3.33 h) | 87.1° 07:40 | 9.2 | 46% | 68.3° |
| 2045-03-11 Sat | 76 | — | unknown | 01:45–05:10 (good, 3.42 h) | 87.1° 07:40 | 9.16 | 37% | 66.3° |
| 2045-03-12 Sun | 82 | — | unknown | 01:40–05:05 (good, 3.42 h) | 87.1° 07:35 | 9.11 | 28% | 65.4° |
| 2045-03-13 Mon | 89 | — | unknown | 01:35–05:05 (good, 3.5 h) | 87.1° 07:30 | 9.06 | 20% | 65.5° |
| 2045-03-14 Tue | 91 | — | unknown | 01:30–05:00 (good, 3.5 h) | 87.1° 07:25 | 9.01 | 13% | 66.8° |
| 2045-03-15 Wed | 93 | — | unknown | 01:30–05:00 (good, 3.5 h) | 87.1° 07:25 | 8.96 | 7% | 69.1° |
| 2045-03-16 Thu | 93 | — | unknown | 01:25–05:00 (good, 3.58 h) | 87.1° 07:20 | 8.91 | 3% | 72.4° |
| 2045-03-17 Fri | 94 | — | unknown | 01:20–04:55 (good, 3.58 h) | 87.1° 07:15 | 8.86 | 1% | 76.4° |
| 2045-03-18 Sat | 96 | — | unknown | 01:15–04:55 (good, 3.67 h) | 87.1° 07:10 | 8.8 | 0% | 81.1° |
| 2045-03-19 Sun | 97 | — | unknown | 01:15–04:55 (good, 3.67 h) | 87.1° 07:05 | 8.75 | 2% | 86.2° |
| 2045-03-20 Mon | 97 | — | unknown | 01:10–04:50 (good, 3.67 h) | 87.1° 07:05 | 8.7 | 5% | 91.6° |
| 2045-03-21 Tue | 98 | — | unknown | 01:05–04:50 (good, 3.75 h) | 87.1° 07:00 | 8.65 | 11% | 97.0° |
| 2045-03-22 Wed | 99 | — | unknown | 01:00–04:50 (good, 3.83 h) | 87.1° 06:55 | 8.6 | 18% | 102.1° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2045-02-21&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.