Galilean transformation is not completely Newtonian

Hundreds of thousands of physicists, for more than a century, when they talk about space and time, “know by heart” that: according to Newton, space and time are absolute. But Newton also defined relative space and time. I invite physicists to (re)read Newton’s
 description of relative space and time, where they will see that the equation <mml:math display="inline"> <mml:mi>t</mml:mi> <mml:mo>′</mml:mo> <mml:mo>=</mml:mo> <mml:mi>t</mml:mi> </mml:math> , which is imputed in the current
 Galilean transformation, has nothing to do with Newton’s contribution on this issue.