Another interesting aspect of the timeline is the reference to the pyramids in WT literatures
Date of flood - 2370 BCE, 3rd milllenium B.C.E, 24th century B.C, but 630 years of that epoch preceeded it.
Here is a quote from the Insight book...
Later, during his stay in Egypt (Ge 12:10), Abraham may have witnessed some of the architectural splendors of that land. The Step Pyramid of King Djoser at Saqqara is supposed to date from the third millennium B.C.E. and is one of the earliest examples remaining of major constructions using cut stone. (PICTURE, Vol. 1, p. 530) The Great Pyramid of Khufu, built somewhat later at Giza, has a huge base of 5.3 ha (13 acres) and was made of some 2,300,000 blocks of limestone, each weighing 2.3 metric tons on the average. It was originally 147 m (482 ft) high. Not only the size but also the precision achieved makes it a project amazing even modern engineers. Several centuries later at Karnak, farther up the Nile, the Egyptians produced the largest known temple built by man. The roof of its great hall was supported by 134 enormous columns, each some 3 m (10 ft) in diameter,decorated with richly colored reliefs.
Wikipedia tells me that the Pyrimid of Djoser was built around 2667–2648 BC.
It also tells me that the Great Pyramid of Khufu was built around 2560 BC.
It also tells me about a number of other sites that were built at least 2400 BC - many of them outside of Africa and the Middle East. Loads of them are in North West Europe. South America has a building older than the Pyrimid of Djoser.
The WT is strangely silent on all of this. Somehow it ignores the continuity of the Egyptian dynasties through the destruction of the flood. In a time where there is still the possibility that mountains were forced up and extraordinary tectonic activity changed the shape of the world all these structures survived without significant damage. Amazing what God can do. How faith strengthening.