In the early days of the web, site owners could rank high in search engines by adding lots of search terms to web pages, whether they were relevant to the website or not. Search engines caught on and, over time, have refined their algorithms to favor high-quality content and sites. This means that SEO is now more complex than just adding the right words to your copy.
Hey Ted, thanks for the great questions! The peak times refer to your particular time zone, if you are targeting an audience that resides in the same zone as you. You can also use tools to find out when most of your audience is online. For example, Facebook has this built into their Page Insights. For Twitter, you can use https://followerwonk.com/. Many social posting tools also offer this functionality.