← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-03-13 Tue | 31 | — | unknown | 03:55–05:05 (good, 1.17 h) | 71.1° 08:55 | 9.06 | 2% | 47.0° |
| 2029-03-14 Wed | 33 | — | unknown | 03:50–05:05 (good, 1.25 h) | 71.1° 08:50 | 9.01 | 0% | 53.6° |
| 2029-03-15 Thu | 32 | — | unknown | 03:45–05:00 (good, 1.25 h) | 71.1° 08:45 | 8.96 | 1% | 61.3° |
| 2029-03-16 Fri | 33 | — | unknown | 03:40–05:00 (good, 1.33 h) | 71.1° 08:45 | 8.91 | 3% | 69.7° |
| 2029-03-17 Sat | 34 | — | unknown | 03:35–04:55 (good, 1.33 h) | 71.1° 08:40 | 8.86 | 7% | 78.5° |
| 2029-03-18 Sun | 35 | — | unknown | 03:35–04:55 (good, 1.33 h) | 71.1° 08:35 | 8.81 | 12% | 87.6° |
| 2029-03-19 Mon | 36 | — | unknown | 03:30–04:55 (good, 1.42 h) | 71.1° 08:30 | 8.76 | 19% | 96.8° |
| 2029-03-20 Tue | 36 | — | unknown | 03:25–04:50 (good, 1.42 h) | 71.1° 08:25 | 8.71 | 27% | 105.9° |
| 2029-03-21 Wed | 38 | — | unknown | 03:20–04:50 (good, 1.5 h) | 71.1° 08:25 | 8.66 | 36% | 114.9° |
| 2029-03-22 Thu | 39 | — | unknown | 03:20–04:50 (good, 1.5 h) | 71.1° 08:20 | 8.6 | 46% | 123.4° |
| 2029-03-23 Fri | 39 | — | unknown | 03:15–04:45 (good, 1.5 h) | 71.1° 08:15 | 8.55 | 56% | 131.0° |
| 2029-03-24 Sat | 40 | — | unknown | 04:10–05:45 (good, 1.58 h) | 71.1° 09:10 | 8.5 | 67% | 137.0° |
| 2029-03-25 Sun | 39 | — | unknown | 04:10–05:40 (good, 1.5 h) | 71.1° 09:05 | 8.45 | 77% | 140.2° |
| 2029-03-26 Mon | 39 | — | unknown | 04:10–05:40 (good, 1.5 h) | 71.1° 09:05 | 8.39 | 86% | 139.4° |
| 2029-03-27 Tue | 36 | — | unknown | 04:05–05:40 (good, 1.58 h) | 71.1° 09:00 | 8.34 | 93% | 134.6° |
| 2029-03-28 Wed | 36 | — | unknown | 04:05–05:35 (good, 1.5 h) | 71.1° 08:55 | 8.28 | 98% | 126.5° |
| 2029-03-29 Thu | 34 | — | unknown | 04:05–05:35 (good, 1.5 h) | 71.1° 08:50 | 8.23 | 100% | 116.5° |
| 2029-03-30 Fri | 31 | — | unknown | 04:05–05:35 (good, 1.5 h) | 71.1° 08:45 | 8.18 | 99% | 105.3° |
| 2029-03-31 Sat | 27 | — | unknown | 04:10–05:30 (good, 1.33 h) | 71.1° 08:45 | 8.12 | 95% | 93.7° |
| 2029-04-01 Sun | 26 | — | unknown | 04:20–05:30 (good, 1.17 h) | 71.1° 08:40 | 8.07 | 88% | 82.3° |
| 2029-04-02 Mon | 25 | — | unknown | 04:25–05:25 (good, 1.0 h) | 71.1° 08:35 | 8.01 | 80% | 71.3° |
| 2029-04-03 Tue | 26 | — | unknown | 04:10–05:25 (good, 1.25 h) | 71.1° 08:30 | 7.96 | 70% | 61.3° |
| 2029-04-04 Wed | 28 | — | unknown | 03:50–05:25 (good, 1.58 h) | 71.1° 08:30 | 7.9 | 59% | 52.5° |
| 2029-04-05 Thu | 31 | — | unknown | 03:40–05:20 (good, 1.67 h) | 71.1° 08:25 | 7.85 | 49% | 45.5° |
| 2029-04-06 Fri | 38 | — | unknown | 03:20–05:20 (good, 2.0 h) | 71.1° 08:20 | 7.79 | 39% | 41.0° |
| 2029-04-07 Sat | 44 | — | unknown | 03:15–05:15 (good, 2.0 h) | 71.1° 08:15 | 7.73 | 29% | 39.5° |
| 2029-04-08 Sun | 48 | — | unknown | 03:10–05:15 (good, 2.08 h) | 71.1° 08:10 | 7.68 | 21% | 41.2° |
| 2029-04-09 Mon | 53 | — | unknown | 03:05–05:15 (good, 2.17 h) | 71.1° 08:10 | 7.62 | 14% | 45.5° |
| 2029-04-10 Tue | 54 | — | unknown | 03:05–05:10 (good, 2.08 h) | 71.1° 08:05 | 7.56 | 8% | 51.7° |
| 2029-04-11 Wed | 56 | — | unknown | 03:00–05:10 (good, 2.17 h) | 71.1° 08:00 | 7.51 | 4% | 59.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-03-13&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.