The Apple event will be held in the Steve Jobs Theater in Cupertino, California and begin at 10 a.m. PT, which is 1 p.m. ET. If it's like the last few years' iPhone events, it will likely last for about two hours.
Rumors circulating in the days leading up to the event suggest that Apple will launch a new anniversary phone, potentially called the iPhone 8, iPhone X or iPhone Edition, and announce updates to the current iPhone 7 and 7 Plus models.
The presentation will stream through Apple's website. To watch online, you will need an iPhone, iPad or iPod running on iOS 7 or later, or a Mac that has its OS X and Safari updated. If you're a PC user running Windows 10, you can watch through Microsoft's Edge browser.