← 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. |
|---|---|---|---|---|---|---|---|---|
| 2028-02-26 Sat | 24 | — | unknown | 04:40–05:30 (good, 0.83 h) | 87.2° 10:55 | 9.8 | 2% | 54.6° |
| 2028-02-27 Sun | 26 | — | unknown | 04:35–05:30 (good, 0.92 h) | 87.3° 10:50 | 9.76 | 6% | 56.8° |
| 2028-02-28 Mon | 26 | — | unknown | 04:30–05:25 (good, 0.92 h) | 87.2° 10:45 | 9.71 | 11% | 60.6° |
| 2028-02-29 Tue | 28 | — | unknown | 04:25–05:25 (good, 1.0 h) | 87.2° 10:40 | 9.67 | 18% | 65.6° |
| 2028-03-01 Wed | 28 | — | unknown | 04:25–05:25 (good, 1.0 h) | 87.2° 10:40 | 9.62 | 26% | 71.7° |
| 2028-03-02 Thu | 29 | — | unknown | 04:20–05:25 (good, 1.08 h) | 87.2° 10:35 | 9.58 | 35% | 78.6° |
| 2028-03-03 Fri | 30 | — | unknown | 04:15–05:20 (good, 1.08 h) | 87.3° 10:30 | 9.53 | 45% | 86.0° |
| 2028-03-04 Sat | 30 | — | unknown | 04:10–05:20 (good, 1.17 h) | 87.2° 10:25 | 9.48 | 56% | 93.8° |
| 2028-03-05 Sun | 32 | — | unknown | 04:05–05:20 (good, 1.25 h) | 87.2° 10:20 | 9.44 | 67% | 101.7° |
| 2028-03-06 Mon | 31 | — | unknown | 04:15–05:15 (good, 1.0 h) | 87.2° 10:20 | 9.39 | 77% | 109.3° |
| 2028-03-07 Tue | 31 | — | unknown | 04:10–05:15 (good, 1.08 h) | 87.3° 10:15 | 9.34 | 86% | 116.3° |
| 2028-03-08 Wed | 29 | — | unknown | 04:05–05:15 (good, 1.17 h) | 87.2° 10:10 | 9.29 | 93% | 121.8° |
| 2028-03-09 Thu | 28 | — | unknown | 04:05–05:10 (good, 1.08 h) | 87.2° 10:05 | 9.25 | 98% | 125.2° |
| 2028-03-10 Fri | 28 | — | unknown | 04:00–05:10 (good, 1.17 h) | 87.2° 10:05 | 9.2 | 100% | 125.8° |
| 2028-03-11 Sat | 28 | — | unknown | 03:55–05:05 (good, 1.17 h) | 87.2° 10:00 | 9.15 | 99% | 123.5° |
| 2028-03-12 Sun | 29 | — | unknown | 03:55–05:05 (good, 1.17 h) | 87.3° 09:55 | 9.1 | 95% | 118.9° |
| 2028-03-13 Mon | 28 | — | unknown | 03:50–05:05 (good, 1.25 h) | 87.2° 09:50 | 9.05 | 88% | 112.7° |
| 2028-03-14 Tue | 28 | — | unknown | 03:50–05:00 (good, 1.17 h) | 87.2° 09:45 | 9.0 | 80% | 105.5° |
| 2028-03-15 Wed | 28 | — | unknown | 03:45–05:00 (good, 1.25 h) | 87.2° 09:45 | 8.95 | 70% | 97.9° |
| 2028-03-16 Thu | 29 | — | unknown | 03:40–05:00 (good, 1.33 h) | 87.2° 09:40 | 8.9 | 60% | 90.3° |
| 2028-03-17 Fri | 30 | — | unknown | 03:35–04:55 (good, 1.33 h) | 87.3° 09:35 | 8.85 | 50% | 82.9° |
| 2028-03-18 Sat | 33 | — | unknown | 03:30–04:55 (good, 1.42 h) | 87.2° 09:30 | 8.8 | 41% | 75.9° |
| 2028-03-19 Sun | 36 | — | unknown | 03:10–04:55 (good, 1.75 h) | 87.2° 09:25 | 8.75 | 31% | 69.5° |
| 2028-03-20 Mon | 39 | — | unknown | 03:10–04:50 (good, 1.67 h) | 87.2° 09:25 | 8.7 | 23% | 63.9° |
| 2028-03-21 Tue | 43 | — | unknown | 03:05–04:50 (good, 1.75 h) | 87.3° 09:20 | 8.64 | 16% | 59.3° |
| 2028-03-22 Wed | 45 | — | unknown | 03:00–04:50 (good, 1.83 h) | 87.2° 09:15 | 8.59 | 9% | 56.1° |
| 2028-03-23 Thu | 45 | — | unknown | 02:55–04:45 (good, 1.83 h) | 87.2° 09:10 | 8.54 | 5% | 54.3° |
| 2028-03-24 Fri | 46 | — | unknown | 02:55–04:45 (good, 1.83 h) | 87.2° 09:10 | 8.49 | 2% | 54.3° |
| 2028-03-25 Sat | 46 | — | unknown | 02:50–05:40 (good, 1.83 h) | 87.2° 10:05 | 8.43 | 0% | 56.1° |
| 2028-03-26 Sun | 48 | — | unknown | 03:45–05:40 (good, 1.92 h) | 87.3° 10:00 | 8.38 | 1% | 59.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2028-02-26&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.