← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-04-26 Thu | 53 | — | unknown | 02:15–04:40 (good, 2.42 h) | 71.1° 07:00 | 6.64 | 96% | 110.6° |
| 2029-04-27 Fri | 47 | — | unknown | 02:20–04:40 (good, 2.33 h) | 71.1° 06:55 | 6.58 | 99% | 99.1° |
| 2029-04-28 Sat | 39 | — | unknown | 02:45–04:35 (good, 1.83 h) | 71.1° 06:55 | 6.52 | 100% | 87.4° |
| 2029-04-29 Sun | 35 | — | unknown | 03:20–04:35 (good, 1.25 h) | 71.1° 06:50 | 6.46 | 97% | 75.9° |
| 2029-04-30 Mon | 33 | — | unknown | 03:50–04:35 (good, 0.75 h) | 71.1° 06:45 | 6.41 | 91% | 65.1° |
| 2029-05-01 Tue | 31 | — | unknown | 03:55–04:30 (good, 0.58 h) | 71.1° 06:40 | 6.35 | 84% | 55.5° |
| 2029-05-02 Wed | 34 | — | unknown | 03:20–04:30 (good, 1.17 h) | 71.1° 06:40 | 6.29 | 75% | 47.5° |
| 2029-05-03 Thu | 40 | — | unknown | 02:00–04:25 (good, 2.42 h) | 71.1° 06:35 | 6.23 | 65% | 41.9° |
| 2029-05-04 Fri | 54 | — | unknown | 01:30–04:25 (good, 2.92 h) | 71.1° 06:30 | 6.17 | 55% | 39.4° |
| 2029-05-05 Sat | 62 | — | unknown | 01:25–04:25 (good, 3.0 h) | 71.1° 06:25 | 6.12 | 45% | 40.2° |
| 2029-05-06 Sun | 68 | — | unknown | 01:20–04:20 (good, 3.0 h) | 71.1° 06:20 | 6.06 | 35% | 43.9° |
| 2029-05-07 Mon | 74 | — | unknown | 01:15–04:20 (good, 3.08 h) | 71.1° 06:20 | 6.0 | 26% | 49.8° |
| 2029-05-08 Tue | 80 | — | unknown | 01:15–04:20 (good, 3.08 h) | 71.1° 06:15 | 5.95 | 19% | 57.1° |
| 2029-05-09 Wed | 84 | — | unknown | 01:10–04:15 (good, 3.08 h) | 71.1° 06:10 | 5.89 | 12% | 65.2° |
| 2029-05-10 Thu | 85 | — | unknown | 01:05–04:15 (good, 3.17 h) | 71.1° 06:05 | 5.83 | 6% | 73.9° |
| 2029-05-11 Fri | 87 | — | unknown | 01:00–04:15 (good, 3.25 h) | 71.1° 06:00 | 5.78 | 3% | 83.0° |
| 2029-05-12 Sat | 88 | — | unknown | 00:55–04:10 (good, 3.25 h) | 71.1° 06:00 | 5.72 | 0% | 92.2° |
| 2029-05-13 Sun | 90 | — | unknown | 00:55–04:10 (good, 3.25 h) | 71.1° 05:55 | 5.67 | 0% | 101.5° |
| 2029-05-14 Mon | 91 | — | unknown | 00:50–04:10 (good, 3.33 h) | 71.1° 05:50 | 5.62 | 2% | 110.7° |
| 2029-05-15 Tue | 90 | — | unknown | 00:45–04:05 (good, 3.33 h) | 71.1° 05:45 | 5.56 | 5% | 119.6° |
| 2029-05-16 Wed | 92 | — | unknown | 00:40–04:05 (good, 3.42 h) | 71.1° 05:45 | 5.51 | 11% | 127.7° |
| 2029-05-17 Thu | 94 | — | unknown | 00:40–04:05 (good, 3.42 h) | 71.1° 05:40 | 5.46 | 18% | 134.6° |
| 2029-05-18 Fri | 94 | — | unknown | 00:35–04:00 (good, 3.42 h) | 71.1° 05:35 | 5.41 | 26% | 139.3° |
| 2029-05-19 Sat | 95 | — | unknown | 00:30–04:00 (good, 3.5 h) | 71.1° 05:30 | 5.36 | 36% | 140.8° |
| 2029-05-20 Sun | 95 | — | unknown | 00:30–04:00 (good, 3.5 h) | 71.1° 05:25 | 5.31 | 47% | 138.6° |
| 2029-05-21 Mon | 96 | — | unknown | 00:25–04:00 (good, 3.58 h) | 71.1° 05:25 | 5.26 | 58% | 132.9° |
| 2029-05-22 Tue | 95 | — | unknown | 00:25–03:55 (good, 3.5 h) | 71.1° 05:20 | 5.21 | 70% | 124.7° |
| 2029-05-23 Wed | 93 | — | unknown | 00:25–03:55 (good, 3.5 h) | 71.1° 05:15 | 5.16 | 80% | 114.8° |
| 2029-05-24 Thu | 88 | — | unknown | 00:30–03:55 (good, 3.42 h) | 71.1° 05:10 | 5.11 | 88% | 103.8° |
| 2029-05-25 Fri | 67 | — | unknown | 00:30–03:55 (good, 3.42 h) | 71.1° 05:05 | 5.07 | 95% | 92.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-04-26&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.