← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-03-04 Fri | 19 | — | unknown | 19:50–20:30 (good, 0.67 h) | 79.1° 15:05 | 9.49 | 18% | 20.6° |
| 2033-03-05 Sat | 15 | — | unknown | 19:50–20:15 (good, 0.42 h) | 79.1° 15:00 | 9.45 | 28% | 26.7° |
| 2033-03-06 Sun | 12 | — | unknown | 19:50–20:05 (good, 0.25 h) | 79.1° 15:00 | 9.4 | 38% | 36.9° |
| 2033-03-07 Mon | 9 | — | unknown | 19:55–20:55 (marginal, 1.0 h) | 79.1° 14:55 | 9.35 | 49% | 48.4° |
| 2033-03-08 Tue | 8 | — | unknown | 19:55–20:45 (marginal, 0.83 h) | 79.1° 14:50 | 9.31 | 59% | 60.1° |
| 2033-03-09 Wed | 7 | — | unknown | 19:55–20:40 (marginal, 0.75 h) | 79.1° 14:45 | 9.26 | 69% | 71.8° |
| 2033-03-10 Thu | 6 | — | unknown | 19:55–20:40 (marginal, 0.75 h) | 79.1° 14:45 | 9.21 | 78% | 83.3° |
| 2033-03-11 Fri | 6 | — | unknown | 20:00–20:40 (marginal, 0.67 h) | 79.1° 14:40 | 9.16 | 85% | 94.8° |
| 2033-03-12 Sat | 6 | — | unknown | 20:00–20:35 (marginal, 0.58 h) | 79.1° 14:35 | 9.11 | 91% | 106.0° |
| 2033-03-13 Sun | 6 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 79.1° 14:30 | 9.06 | 96% | 117.1° |
| 2033-03-14 Mon | 6 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 79.1° 14:25 | 9.01 | 99% | 127.9° |
| 2033-03-15 Tue | 4 | — | unknown | 20:05–20:25 (marginal, 0.33 h) | 79.1° 14:25 | 8.96 | 100% | 138.3° |
| 2033-03-16 Wed | 4 | — | unknown | 20:05–20:20 (marginal, 0.25 h) | 79.1° 14:20 | 8.91 | 99% | 147.9° |
| 2033-03-17 Thu | 3 | — | unknown | 19:35–19:50 (marginal, 0.25 h) | 79.1° 14:15 | 8.86 | 97% | 155.7° |
| 2033-03-18 Fri | 3 | — | unknown | 19:35–19:45 (marginal, 0.17 h) | 79.1° 14:10 | 8.81 | 93% | 159.6° |
| 2033-03-19 Sat | 2 | — | unknown | 19:35–19:40 (marginal, 0.08 h) | 79.1° 14:05 | 8.76 | 87% | 157.2° |
| 2033-03-20 Sun | 1 | — | unknown | — | 79.1° 14:05 | 8.71 | 80% | 149.9° |
| 2033-03-21 Mon | 1 | — | unknown | — | 79.1° 14:00 | 8.65 | 71% | 140.2° |
| 2033-03-22 Tue | 1 | — | unknown | — | 79.1° 13:55 | 8.6 | 62% | 129.2° |
| 2033-03-23 Wed | 1 | — | unknown | — | 79.1° 13:50 | 8.55 | 52% | 117.4° |
| 2033-03-24 Thu | 0 | — | unknown | — | 79.1° 13:50 | 8.5 | 41% | 105.1° |
| 2033-03-25 Fri | 0 | — | unknown | — | 79.1° 13:45 | 8.44 | 30% | 92.2° |
| 2033-03-26 Sat | 0 | — | unknown | — | 79.1° 13:40 | 8.39 | 20% | 78.9° |
| 2033-03-27 Sun | 0 | — | unknown | — | 79.1° 14:35 | 8.34 | 12% | 65.3° |
| 2033-03-28 Mon | 0 | — | unknown | — | 79.1° 14:30 | 8.28 | 5% | 51.7° |
| 2033-03-29 Tue | 0 | — | unknown | — | 79.1° 14:30 | 8.23 | 1% | 38.5° |
| 2033-03-30 Wed | 0 | — | unknown | — | 79.1° 14:25 | 8.18 | 0% | 27.1° |
| 2033-03-31 Thu | 0 | — | unknown | — | 79.1° 14:20 | 8.12 | 2% | 20.6° |
| 2033-04-01 Fri | 0 | — | unknown | — | 79.1° 14:15 | 8.07 | 7% | 23.5° |
| 2033-04-02 Sat | 0 | — | unknown | — | 79.1° 14:10 | 8.01 | 14% | 32.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-03-04&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.