Importing .csv satellite trajectory w time data

Hi everyone, I have successfully imported this satellite data but it has flattened into a (2D) orbital path and what I’m trying to do is include the time data so it looks 3D…anyone know what the proper time units are for import and what is the best format-procedure?

The original file has two time formats (JDTDB, TDB) the former is Julian day number and latter is barycentric dynamical time…