Is there any way to know what other products are scheduled to launch on a very particular day?

Hi Rajan! Unless you know and follow the maker, and they announce their launch via Twitter, email list or otherwise, there is no way of knowing this. I think that's part of what makes Product Hunt special though - a certain element of surprise. It's a good thing to launch alongside other cool products. It brings more people to the site, meaning more people can see your thing too! One thing you might want to look out for are launches and events by the big tech companies, like the Apple Event later on today for example.