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.
Try: an autumn deep-sky night · ← previous night · next night →
Night of Tuesday, 19 January 2027 · astronomical night 18:57 → 06:05 (11.14 h) · Moon 90% (waxing gibbous) · 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 |
|---|---|---|---|
| 17:15–19:00 | — nothing worth pointing at — | 1.75 | |
| 19:00–23:15 | M31 | 4.25 | 0.44 |
| 23:15–07:45 | — nothing worth pointing at — | 8.5 |
| target | astronomy | overall | best window | highest | Moon sep. | scheduled h |
|---|---|---|---|---|---|---|
| M31 Andromeda Galaxy | 28 | unknown | 19:00–23:15 (marginal) | 89.7° at 17:10 | 59.0° | 4.25 |
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-01-19"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"}.