← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-08-24 Sun | 3 | 76 | 2 | 04:55–05:00 (marginal, 0.08 h) | 42.9° 08:45 | 7.17 | 3% | 88.8° |
| 2025-08-25 Mon | 4 | 99 | 4 | 05:25–05:40 (marginal, 0.25 h) | 42.9° 08:40 | 7.23 | 7% | 99.2° |
| 2025-08-26 Tue | 4 | 100 | 4 | 04:50–05:05 (marginal, 0.25 h) | 42.9° 08:35 | 7.29 | 13% | 109.1° |
| 2025-08-27 Wed | 5 | 100 | 5 | 04:45–05:05 (marginal, 0.33 h) | 42.9° 08:30 | 7.34 | 20% | 118.7° |
| 2025-08-28 Thu | 7 | 100 | 7 | 04:40–05:05 (marginal, 0.42 h) | 42.9° 08:25 | 7.4 | 28% | 127.5° |
| 2025-08-29 Fri | 8 | 100 | 8 | 04:40–05:45 (marginal, 1.08 h) | 42.9° 08:25 | 7.46 | 37% | 135.4° |
| 2025-08-30 Sat | 9 | 0 | 0 | — | 42.9° 08:20 | 7.51 | 47% | 141.6° |
| 2025-08-31 Sun | 10 | 100 | 10 | 05:00–05:10 (good, 0.17 h) | 42.9° 08:15 | 7.57 | 56% | 145.4° |
| 2025-09-01 Mon | 12 | 100 | 12 | 04:55–05:10 (good, 0.25 h) | 42.9° 08:10 | 7.62 | 66% | 145.7° |
| 2025-09-02 Tue | 15 | 100 | 15 | 04:55–05:15 (good, 0.33 h) | 42.9° 08:05 | 7.68 | 75% | 142.4° |
| 2025-09-03 Wed | 16 | 48 | 8 | 04:30–05:00 (marginal, 0.5 h) | 42.9° 08:05 | 7.74 | 83% | 135.9° |
| 2025-09-04 Thu | 17 | 85 | 15 | 05:00–05:15 (good, 0.25 h) | 42.9° 08:00 | 7.79 | 90% | 127.3° |
| 2025-09-05 Fri | 20 | 54 | 11 | 04:25–05:20 (marginal, 0.92 h) | 42.9° 07:55 | 7.85 | 96% | 117.2° |
| 2025-09-06 Sat | 16 | 80 | 13 | 05:05–05:20 (good, 0.25 h) | 42.9° 07:50 | 7.9 | 99% | 106.2° |
| 2025-09-07 Sun | 14 | 0 | 0 | — | 42.9° 07:50 | 7.96 | 100% | 94.5° |
| 2025-09-08 Mon | 11 | 98 | 11 | 04:10–05:20 (marginal, 1.17 h) | 42.9° 07:45 | 8.01 | 98% | 82.5° |
| 2025-09-09 Tue | 9 | 99 | 9 | 04:15–05:25 (marginal, 1.17 h) | 42.9° 07:40 | 8.06 | 94% | 70.6° |
| 2025-09-10 Wed | 8 | 12 | 1 | — | 42.9° 07:35 | 8.12 | 87% | 59.1° |
| 2025-09-11 Thu | 7 | 58 | 4 | 04:15–05:00 (marginal, 0.75 h) | 42.9° 07:30 | 8.17 | 78% | 48.7° |
| 2025-09-12 Fri | 8 | 87 | 7 | 04:15–05:25 (marginal, 1.17 h) | 42.9° 07:30 | 8.23 | 67% | 40.1° |
| 2025-09-13 Sat | 12 | 100 | 12 | 03:50–05:30 (marginal, 1.67 h) | 42.9° 07:25 | 8.28 | 56% | 34.9° |
| 2025-09-14 Sun | 17 | 21 | 4 | 03:45–04:00 (marginal, 0.25 h) | 42.9° 07:20 | 8.33 | 44% | 34.3° |
| 2025-09-15 Mon | 23 | 100 | 23 | 04:25–05:30 (good, 1.08 h) | 42.9° 07:15 | 8.38 | 34% | 38.4° |
| 2025-09-16 Tue | 29 | 100 | 29 | 04:10–05:30 (good, 1.33 h) | 42.9° 07:10 | 8.44 | 24% | 45.7° |
| 2025-09-17 Wed | 35 | 92 | 32 | 04:05–05:35 (good, 1.5 h) | 42.9° 07:10 | 8.49 | 15% | 54.8° |
| 2025-09-18 Thu | 39 | 100 | 39 | 03:50–05:35 (good, 1.75 h) | 42.9° 07:05 | 8.54 | 8% | 64.8° |
| 2025-09-19 Fri | 43 | 97 | 42 | 03:50–05:35 (good, 1.75 h) | 42.9° 07:00 | 8.59 | 4% | 75.1° |
| 2025-09-20 Sat | 45 | 99 | 45 | 03:45–05:35 (good, 1.83 h) | 42.9° 06:55 | 8.64 | 1% | 85.5° |
| 2025-09-21 Sun | 47 | 100 | 47 | 03:40–05:40 (good, 2.0 h) | 42.9° 06:55 | 8.7 | 0% | 95.9° |
| 2025-09-22 Mon | 48 | 100 | 48 | 03:35–05:40 (good, 2.08 h) | 42.9° 06:50 | 8.75 | 1% | 106.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-08-24&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.