Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.
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Night of Sunday, 31 January 2027 · astronomical night 19:10 → 05:58 (10.8 h) · Moon 27% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown
Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight. Download: schedule CSV · targets CSV · JSON
| local | target | hours | mean quality |
|---|---|---|---|
| 17:30–18:40 | — nothing worth pointing at — | 1.17 | |
| 18:40–23:05 | M31 | 4.42 | 0.77 |
| 23:05–07:35 | — nothing worth pointing at — | 8.5 |
| target | astronomy | overall | best window | highest | Moon sep. | scheduled h |
|---|---|---|---|---|---|---|
| M31 Andromeda Galaxy | 86 | unknown | 19:15–22:30 (good) | 89.5° at 16:25 | 131.9° | 4.42 |
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-01-31"targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.