If God's sitting on the circle of the Earth, and God's throne is in heaven, then "the circle of the Earth" describes something orbiting the Earth, not the Earth itself. The circle of the Earth isn't Discworld.
A Geocentrospheric Solution
Another Heliocentric #EpicFail
How would you rationalize this remarkable event, during which the sun went backwards for 40 minutes, in a heliocentric system? It's anyone's guess, but there are several steps required.
The Problem With Geocentrism
There's no question that the cosmological system described in the Bible is Geocentric. The problem with the word Geocentric, and with Geocentrism in general, is that it's irrevocably yoked to the flat Earth insanity.
Hezekiah Superstar
The sign of the sundial was a precursor to the main event: during the the night 185,000 soldiers of the Assyrian army became dead corpses. The Assyrian king fled to Damascus where he was killed by his own children.
The Sun Went Backwards
The sun going backwards is such a significant event that it's recorded twice in scripture in 2 Kings 20 and Isaiah 38:8. It's also referred to in 2 Chronicles 32:31 as "the wonder that was done in the land".
September 23rd
Jerusalem was besieged by the Assyrian army and King Hezekiah was sick and nearly died. Then the sun went backwards. The Assyrian army was wiped out and Hezekiah became internationally famous.