← 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. |
|---|---|---|---|---|---|---|---|---|
| 2046-05-28 Mon | 0 | — | unknown | — | 79.2° 10:30 | 4.94 | 39% | 44.1° |
| 2046-05-29 Tue | 0 | — | unknown | — | 79.2° 10:25 | 4.9 | 30% | 33.3° |
| 2046-05-30 Wed | 0 | — | unknown | — | 79.2° 10:20 | 4.86 | 21% | 23.2° |
| 2046-05-31 Thu | 1 | — | unknown | — | 79.2° 10:20 | 4.83 | 14% | 15.6° |
| 2046-06-01 Fri | 1 | — | unknown | — | 79.2° 10:15 | 4.79 | 8% | 15.5° |
| 2046-06-02 Sat | 1 | — | unknown | — | 79.2° 10:10 | 4.75 | 3% | 23.3° |
| 2046-06-03 Sun | 1 | — | unknown | — | 79.2° 10:05 | 4.72 | 1% | 34.2° |
| 2046-06-04 Mon | 1 | — | unknown | — | 79.2° 10:00 | 4.69 | 0% | 46.4° |
| 2046-06-05 Tue | 2 | — | unknown | 04:30–04:35 (marginal, 0.08 h) | 79.2° 10:00 | 4.66 | 2% | 59.1° |
| 2046-06-06 Wed | 2 | — | unknown | 04:25–04:30 (marginal, 0.08 h) | 79.2° 09:55 | 4.63 | 6% | 72.2° |
| 2046-06-07 Thu | 2 | — | unknown | 04:25–04:30 (marginal, 0.08 h) | 79.2° 09:50 | 4.6 | 12% | 85.6° |
| 2046-06-08 Fri | 2 | — | unknown | 04:20–04:30 (marginal, 0.17 h) | 79.2° 09:45 | 4.58 | 21% | 99.1° |
| 2046-06-09 Sat | 3 | — | unknown | 04:15–04:30 (marginal, 0.25 h) | 79.2° 09:40 | 4.55 | 31% | 112.7° |
| 2046-06-10 Sun | 3 | — | unknown | 04:10–04:30 (marginal, 0.33 h) | 79.2° 09:40 | 4.53 | 42% | 126.3° |
| 2046-06-11 Mon | 3 | — | unknown | 04:05–04:30 (marginal, 0.42 h) | 79.2° 09:35 | 4.51 | 53% | 139.6° |
| 2046-06-12 Tue | 4 | — | unknown | 04:05–04:30 (marginal, 0.42 h) | 79.2° 09:30 | 4.49 | 65% | 152.3° |
| 2046-06-13 Wed | 5 | — | unknown | 04:00–04:30 (marginal, 0.5 h) | 79.2° 09:25 | 4.48 | 75% | 162.8° |
| 2046-06-14 Thu | 6 | — | unknown | 03:55–04:30 (marginal, 0.58 h) | 79.2° 09:25 | 4.46 | 84% | 165.2° |
| 2046-06-15 Fri | 7 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.2° 09:20 | 4.45 | 92% | 157.0° |
| 2046-06-16 Sat | 6 | — | unknown | 03:55–04:30 (marginal, 0.58 h) | 79.2° 09:15 | 4.44 | 97% | 145.1° |
| 2046-06-17 Sun | 7 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.2° 09:10 | 4.43 | 99% | 132.5° |
| 2046-06-18 Mon | 8 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.2° 09:05 | 4.43 | 100% | 119.8° |
| 2046-06-19 Tue | 8 | — | unknown | 03:05–03:40 (marginal, 0.58 h) | 79.2° 09:05 | 4.42 | 98% | 107.1° |
| 2046-06-20 Wed | 7 | — | unknown | 03:05–03:40 (marginal, 0.58 h) | 79.2° 09:00 | 4.42 | 94% | 94.7° |
| 2046-06-21 Thu | 7 | — | unknown | 03:00–03:40 (marginal, 0.67 h) | 79.2° 08:55 | 4.42 | 88% | 82.6° |
| 2046-06-22 Fri | 7 | — | unknown | 03:00–03:40 (marginal, 0.67 h) | 79.2° 08:50 | 4.43 | 81% | 70.7° |
| 2046-06-23 Sat | 7 | — | unknown | 02:55–03:40 (marginal, 0.75 h) | 79.2° 08:45 | 4.43 | 73% | 59.1° |
| 2046-06-24 Sun | 8 | — | unknown | 02:50–03:40 (marginal, 0.83 h) | 79.2° 08:45 | 4.44 | 64% | 47.7° |
| 2046-06-25 Mon | 9 | — | unknown | 02:45–03:40 (marginal, 0.92 h) | 79.2° 08:40 | 4.45 | 55% | 36.7° |
| 2046-06-26 Tue | 12 | — | unknown | 02:40–03:40 (marginal, 1.0 h) | 79.2° 08:35 | 4.46 | 45% | 26.3° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2046-05-28&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.