I have just a simple question

Hi guys.

I'm looking around because I finally finished my post-apocalyptic book after two years. I would like to promote, but I'm not sure if I'm allowed to do it here. So before I just drop a link anywhere I want to know if it's okay with you? I checked the rules here but I don't know what is "Wednesday" (besides a weekday).

Thanks in advance for you kind response.