the.com/highsun
That blinding overhead hour when shadows quit and shade becomes a competitive sport.
means The period around midday when the sun is highest in the sky and light is at its harshest.
from A transparent compound of high and sun, echoing older folk timekeeping like highnoon, when people marked the day by the sun's position rather than a clock face.
Shortest shadowsYour shadow shrinks nearly to nothing here.
Peak UVMost sunburns are earned around this hour.
Not hottestAir stays warming for hours after.