Only if certain presumed consistancies allowing for measurement are implemented. The violent and radical changes of a global flood the effects of which are unobservable and therefore unknowable make virtually impossible. This is not to mention the same presumptions regarding the unobservable past even if there have been long ages. Even apart from the flood of the bible, science itself reveals radical change in and of this world by observable plant and animal fossils, and geological formations and structuring.
Are you an expert enough about how all of this works that you can demonstrate how to take seeming evidence of 300,000 years of time, or especially 800,000 years, and show how it can fit in a 6,000 year old earth? Christians who are also scientist know how to take such variables into consideration and they still arrive at these long time periods, but you still want to insult them all and claim that your viewpoint is correct and they are all wrong.
I want to know what your expertise is regarding all of this that your opinion is authoritative.