Local sky, right now

Zenith Sky Explorer

Choose a place and a moment, and this finds the point directly overhead — the zenith — and reads off its Right Ascension, Declination, and the constellation currently sitting at the top of the sky.

Where

Location

Timezone offset (hours from UTC)

Latitude (°N positive)

Longitude (°E positive)

When

Date

Time (local clock time)

Overhead

The brass marker on the outer ring shows where 0h–18h of Right Ascension currently sit; it points toward the zenith's position in Local Sidereal Time.

Readout

Right Ascension

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Declination

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Local Sidereal Time

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Coordinates used

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Constellation overhead

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On accuracy: the zenith's coordinates (RA = Local Sidereal Time, Dec = latitude) are exact for the date, time and location entered. The constellation shown is found by nearest-center matching against the 88 constellations' approximate midpoints, not the official IAU boundary polygons — reliable for most points, but it can occasionally call it differently right at a constellation border.