got h1b receipt, last date to attend interview

Hi,

I got the H1B receipt, it is valid from Oct 20, 2016 to Sep 20, 2017.

Have to attend the consulate interview, is there any specific time period within which you have to attend the interview?

Shall I attend the consulate interview for visa stamping by May 2017??

Please let me know regarding it.

Thanks

M.Prabhu