Is my E Thai visa valid if I enter on the last day before expiration?

Hi All , so I’m going to Thailand in late October, I recently applied here from the uk to the E Thai visa website for a 90 visa which I have received but my concerns are its valid from August and runs out 2nd of November?

Is that going to be ok for me

Are theses visas the type that as long as you go within in the validity of the visa I will get 90 days from day I land in Thailand

Or is that the Thai e visa embassy have put the wrong dates on , I recall when applying I put I was traveling in October

Any help please will be much appreciated

Thanks