← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-04-28 Sat | 0 | — | unknown | — | 79.1° 12:30 | 6.52 | 100% | 160.3° |
| 2029-04-29 Sun | 0 | — | unknown | — | 79.1° 12:25 | 6.46 | 97% | 148.5° |
| 2029-04-30 Mon | 0 | — | unknown | — | 79.1° 12:20 | 6.41 | 91% | 135.2° |
| 2029-05-01 Tue | 0 | — | unknown | — | 79.1° 12:20 | 6.35 | 84% | 121.8° |
| 2029-05-02 Wed | 0 | — | unknown | — | 79.1° 12:15 | 6.29 | 75% | 108.7° |
| 2029-05-03 Thu | 0 | — | unknown | — | 79.1° 12:10 | 6.23 | 65% | 95.9° |
| 2029-05-04 Fri | 0 | — | unknown | — | 79.1° 12:05 | 6.17 | 55% | 83.5° |
| 2029-05-05 Sat | 0 | — | unknown | — | 79.1° 12:00 | 6.12 | 45% | 71.5° |
| 2029-05-06 Sun | 0 | — | unknown | — | 79.1° 11:55 | 6.06 | 35% | 59.8° |
| 2029-05-07 Mon | 0 | — | unknown | — | 79.1° 11:50 | 6.0 | 26% | 48.4° |
| 2029-05-08 Tue | 0 | — | unknown | — | 79.1° 11:45 | 5.95 | 19% | 37.4° |
| 2029-05-09 Wed | 0 | — | unknown | — | 79.1° 11:45 | 5.89 | 12% | 27.1° |
| 2029-05-10 Thu | 0 | — | unknown | — | 79.1° 11:40 | 5.83 | 6% | 18.4° |
| 2029-05-11 Fri | 0 | — | unknown | — | 79.1° 11:35 | 5.78 | 3% | 14.8° |
| 2029-05-12 Sat | 0 | — | unknown | — | 79.1° 11:30 | 5.72 | 0% | 19.4° |
| 2029-05-13 Sun | 0 | — | unknown | — | 79.1° 11:25 | 5.67 | 0% | 28.6° |
| 2029-05-14 Mon | 0 | — | unknown | — | 79.1° 11:25 | 5.62 | 2% | 39.5° |
| 2029-05-15 Tue | 0 | — | unknown | — | 79.1° 11:20 | 5.56 | 5% | 51.0° |
| 2029-05-16 Wed | 0 | — | unknown | — | 79.1° 11:15 | 5.51 | 11% | 63.0° |
| 2029-05-17 Thu | 0 | — | unknown | — | 79.1° 11:10 | 5.46 | 18% | 75.3° |
| 2029-05-18 Fri | 0 | — | unknown | — | 79.1° 11:05 | 5.41 | 26% | 87.8° |
| 2029-05-19 Sat | 0 | — | unknown | — | 79.1° 11:05 | 5.36 | 36% | 100.7° |
| 2029-05-20 Sun | 0 | — | unknown | — | 79.1° 11:00 | 5.31 | 47% | 113.7° |
| 2029-05-21 Mon | 0 | — | unknown | — | 79.1° 10:55 | 5.26 | 58% | 127.0° |
| 2029-05-22 Tue | 0 | — | unknown | — | 79.1° 10:50 | 5.21 | 70% | 140.3° |
| 2029-05-23 Wed | 0 | — | unknown | — | 79.1° 10:50 | 5.16 | 80% | 153.0° |
| 2029-05-24 Thu | 0 | — | unknown | — | 79.1° 10:45 | 5.11 | 88% | 163.2° |
| 2029-05-25 Fri | 0 | — | unknown | — | 79.1° 10:40 | 5.07 | 95% | 163.8° |
| 2029-05-26 Sat | 0 | — | unknown | — | 79.1° 10:35 | 5.03 | 99% | 154.0° |
| 2029-05-27 Sun | 0 | — | unknown | — | 79.1° 10:30 | 4.98 | 100% | 141.1° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-04-28&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.