President is impeached and convicted - at what precise moment does he lose power?

[I_Love_Me_Vol.I]

@Saint_Cad

With a 50/50 split, McConnell will cease being majority leader when they first meet after noon January 20th when Kamala Harris takes her seat as President of the Senate.

But will it be a 50/50 split by noon January 20? When do the new senators from Georgia get seated?