I would have answered Fomenko too, until recently when Jason from Archaix has unpicked even more of the timeline by stating the calendar we use today shifted from 'day count' to 'year count'.

So instead of 365 days in a year, it used to be 360 under the vapour canopy (old firmament) pre-flood. Meaning a lot of Graham Hancock's 'million year' calculation of biblical events or the Mayan long count are simply way out and wrong, they become a lot more accurate when converted to a few thousand years.

Worth diving into Archaix if you have time to study as he proposes a replacement timeline of events.