Overhead

Small-radius monitor

What is above me?

1.0 NM

Observer position

Input source

Radius, nautical miles

Latitude

Longitude

Refresh interval, seconds

API base

0.5 NM = very local 1.0 NM = default 2.0 NM = wider catch

Browser geolocation can keep the observer point current while you move.

No checks yet

Tap “I HEAR A PLANE” when you hear one. The monitor records the closest aircraft at that moment.

External injection:

window.overhead.setPosition(lat, lon)

window.postMessage({type:"overhead-position", lat, lon}, "*")