Gerald Kelleher wrote:
Tomorrow is the day when there are two distinct noon events and also two
distinct midnight events. Daily local noon is when a location is exactly
midway in its daily trek between the circle of illumination but this
doesn't happen at the North or South poles where the Sun comes into view
once on the Equinox and sets on the opposite Equinox.

At 5:20 AM tomorrow it will be local noon at the North pole and local
midnight at the South pole as those locations turn to the central Sun,
within context of the orbital day/night cycle and its rotational cause.

The area where the Sun remains constantly in view is reaching its maximum
an coincident with the Arctic circle and after the Solstice the area will
shrink once more to the point before the September Equinox when only the
local horizon at the North pole remains where the Sun is constantly in view.

Unlike the plethora of graphics trundled out at the moment relating to
the Solstice there is so much research to do working with the planet's
two distinct rotations in isolation and in combination.


Local noon is when the sun crosses the meridian. At the poles all meridians
converge. It's always local noon if the sun is visible at a pole.