← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-04-07 Tue | 58 | — | unknown | 03:00–05:20 (good, 2.33 h) | 87.2° 09:15 | 7.76 | 5% | 59.9° |
| 2043-04-08 Wed | 58 | — | unknown | 02:55–05:15 (good, 2.33 h) | 87.2° 09:10 | 7.7 | 1% | 61.7° |
| 2043-04-09 Thu | 59 | — | unknown | 02:55–05:15 (good, 2.33 h) | 87.2° 09:10 | 7.64 | 0% | 65.5° |
| 2043-04-10 Fri | 59 | — | unknown | 02:50–05:10 (good, 2.33 h) | 87.2° 09:05 | 7.59 | 2% | 71.0° |
| 2043-04-11 Sat | 61 | — | unknown | 02:45–05:10 (good, 2.42 h) | 87.2° 09:00 | 7.53 | 7% | 77.6° |
| 2043-04-12 Sun | 63 | — | unknown | 02:40–05:10 (good, 2.5 h) | 87.2° 08:55 | 7.47 | 14% | 84.9° |
| 2043-04-13 Mon | 62 | — | unknown | 02:35–05:05 (good, 2.5 h) | 87.2° 08:50 | 7.41 | 23% | 92.2° |
| 2043-04-14 Tue | 63 | — | unknown | 02:35–05:05 (good, 2.5 h) | 87.2° 08:50 | 7.36 | 34% | 99.2° |
| 2043-04-15 Wed | 63 | — | unknown | 02:35–05:00 (good, 2.42 h) | 87.2° 08:45 | 7.3 | 45% | 105.6° |
| 2043-04-16 Thu | 63 | — | unknown | 02:35–05:00 (good, 2.42 h) | 87.2° 08:40 | 7.24 | 55% | 111.1° |
| 2043-04-17 Fri | 64 | — | unknown | 02:30–05:00 (good, 2.5 h) | 87.2° 08:35 | 7.18 | 66% | 115.5° |
| 2043-04-18 Sat | 63 | — | unknown | 02:25–04:55 (good, 2.5 h) | 87.2° 08:30 | 7.13 | 75% | 118.5° |
| 2043-04-19 Sun | 58 | — | unknown | 02:25–04:55 (good, 2.5 h) | 87.2° 08:30 | 7.07 | 83% | 120.1° |
| 2043-04-20 Mon | 57 | — | unknown | 02:20–04:50 (good, 2.5 h) | 87.2° 08:25 | 7.01 | 90% | 120.0° |
| 2043-04-21 Tue | 57 | — | unknown | 02:20–04:50 (good, 2.5 h) | 87.2° 08:20 | 6.95 | 95% | 118.5° |
| 2043-04-22 Wed | 55 | — | unknown | 02:20–04:50 (good, 2.5 h) | 87.2° 08:15 | 6.89 | 98% | 115.7° |
| 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° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-04-07&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.