← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-04-23 Thu | 52 | — | unknown | 02:20–04:45 (good, 2.42 h) | 87.2° 08:15 | 6.84 | 100% | 111.8° |
| 2043-04-24 Fri | 51 | — | unknown | 02:15–04:45 (good, 2.5 h) | 87.2° 08:10 | 6.78 | 100% | 107.1° |
| 2043-04-25 Sat | 49 | — | unknown | 02:15–04:45 (good, 2.5 h) | 87.2° 08:05 | 6.72 | 98% | 101.8° |
| 2043-04-26 Sun | 47 | — | unknown | 02:10–04:40 (good, 2.5 h) | 87.2° 08:00 | 6.66 | 94% | 96.0° |
| 2043-04-27 Mon | 47 | — | unknown | 02:10–04:40 (good, 2.5 h) | 87.2° 07:55 | 6.6 | 88% | 90.1° |
| 2043-04-28 Tue | 47 | — | unknown | 02:00–04:35 (good, 2.58 h) | 87.2° 07:55 | 6.54 | 82% | 84.1° |
| 2043-04-29 Wed | 50 | — | unknown | 01:55–04:35 (good, 2.67 h) | 87.2° 07:50 | 6.49 | 74% | 78.2° |
| 2043-04-30 Thu | 59 | — | unknown | 01:30–04:35 (good, 3.08 h) | 87.2° 07:45 | 6.43 | 64% | 72.7° |
| 2043-05-01 Fri | 65 | — | unknown | 01:25–04:30 (good, 3.08 h) | 87.2° 07:40 | 6.37 | 55% | 67.7° |
| 2043-05-02 Sat | 72 | — | unknown | 01:20–04:30 (good, 3.17 h) | 87.2° 07:35 | 6.31 | 44% | 63.6° |
| 2043-05-03 Sun | 77 | — | unknown | 01:20–04:30 (good, 3.17 h) | 87.2° 07:35 | 6.25 | 34% | 60.8° |
| 2043-05-04 Mon | 82 | — | unknown | 01:15–04:25 (good, 3.17 h) | 87.2° 07:30 | 6.2 | 24% | 59.7° |
| 2043-05-05 Tue | 85 | — | unknown | 01:10–04:25 (good, 3.25 h) | 87.2° 07:25 | 6.14 | 15% | 60.6° |
| 2043-05-06 Wed | 86 | — | unknown | 01:05–04:20 (good, 3.25 h) | 87.2° 07:20 | 6.08 | 7% | 63.5° |
| 2043-05-07 Thu | 88 | — | unknown | 01:05–04:20 (good, 3.25 h) | 87.2° 07:20 | 6.03 | 2% | 68.3° |
| 2043-05-08 Fri | 89 | — | unknown | 01:00–04:20 (good, 3.33 h) | 87.2° 07:15 | 5.97 | 0% | 74.5° |
| 2043-05-09 Sat | 89 | — | unknown | 00:55–04:15 (good, 3.33 h) | 87.2° 07:10 | 5.91 | 1% | 81.7° |
| 2043-05-10 Sun | 91 | — | unknown | 00:50–04:15 (good, 3.42 h) | 87.2° 07:05 | 5.86 | 5% | 89.3° |
| 2043-05-11 Mon | 93 | — | unknown | 00:45–04:15 (good, 3.5 h) | 87.2° 07:00 | 5.8 | 12% | 96.7° |
| 2043-05-12 Tue | 92 | — | unknown | 00:45–04:10 (good, 3.42 h) | 87.2° 07:00 | 5.75 | 20% | 103.6° |
| 2043-05-13 Wed | 94 | — | unknown | 00:45–04:10 (good, 3.42 h) | 87.2° 06:55 | 5.69 | 30% | 109.7° |
| 2043-05-14 Thu | 95 | — | unknown | 00:40–04:10 (good, 3.5 h) | 87.2° 06:50 | 5.64 | 40% | 114.5° |
| 2043-05-15 Fri | 94 | — | unknown | 00:40–04:05 (good, 3.42 h) | 87.2° 06:45 | 5.58 | 50% | 118.0° |
| 2043-05-16 Sat | 95 | — | unknown | 00:35–04:05 (good, 3.5 h) | 87.2° 06:40 | 5.53 | 61% | 120.0° |
| 2043-05-17 Sun | 94 | — | unknown | 00:35–04:05 (good, 3.5 h) | 87.2° 06:40 | 5.48 | 70% | 120.3° |
| 2043-05-18 Mon | 94 | — | unknown | 00:30–04:05 (good, 3.58 h) | 87.2° 06:35 | 5.43 | 79% | 119.1° |
| 2043-05-19 Tue | 84 | — | unknown | 00:30–04:00 (good, 3.5 h) | 87.2° 06:30 | 5.38 | 86% | 116.6° |
| 2043-05-20 Wed | 81 | — | unknown | 00:30–04:00 (good, 3.5 h) | 87.2° 06:25 | 5.33 | 92% | 112.9° |
| 2043-05-21 Thu | 77 | — | unknown | 00:30–04:00 (good, 3.5 h) | 87.2° 06:25 | 5.28 | 96% | 108.4° |
| 2043-05-22 Fri | 71 | — | unknown | 00:30–03:55 (good, 3.42 h) | 87.2° 06:20 | 5.23 | 99% | 103.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-04-23&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.