- Flights' ground floor works across the antimeridian. The viewer-distance
  check behind the 150 km floor radius and its copy in the photoreal mesh-floor
  sampler subtracted longitudes without wrapping, so two points 21 km apart
  across 180° measured about 38,000 km and low or grounded aircraft just across
  the line from the viewer were never floored. A contact's display corridor
  walked a segment across 180° the long way round, spending its cell budget on
  ground behind the contact, and a contact on the seam lost its cell hysteresis.
  SEARCH NEARBY SITES on a view across 180° searched Google Places around
  longitude 0, on the far side of the globe, with a radius sized from the view's
  height alone; it now searches the view (Aditya, @Rohilalala, #1173).