The Eclipse starts exactly on time, according to the position of the Sun. But this light has a lag of about 8 minutes. It is historical. The field from the Sun, which is blocked by the core of the Moon, must be instantaneous or in real time. Therefore the Black Disk in the atmosphere may be offset to, or near, the leading edge of the Moon's position. None of the Moon would be visible during the entire Eclipse, which appears to be an optical illusion created in the electrified area of the ionosphere.
The true position of the Moon could perhaps be verified by laser beams directed at mirrors which are already on the Moon. This could be a done from locations perpendicularly north and south of the Eclipse line of travel. Knowledge of the Moons true position during an eclipse may tell us accurately if the Sun's interaction with our atmosphere is instantaneous or at our normal speed of light.
The Black Disk is shown here somewhat smaller than the Moon. The alignments work correctly. Because the Black Disk is located very close to us, the size is still sufficient to obscure a large amount of Space as well as the Sun and Moon.