I'm still confused regarding testing.

We leave for SXM from Boston Saturday,10/16/21. Can I take the ID NOW test 72 hours prior to my departure? For example, on Wednesday 10/13? Or does that particular test have to be taken only within the 48 hour window on Thursday, the 14th?

Is the ID NOW the same as the BinaxNOW mentioned in Jazzgal's post?

Thanks.