todsacerdotiGitHub's Historic Uptime
Even better IMO is this status page: https://mrshu.github.io/github-statuses/
"The Missing GitHub Status Page" with overall aggregate percentages. Currently at 90.84% over the last 90 days. It was at 90.00% a couple days ago.
These are two pages telling two different things, albeit with the same stats. The information is presented by OP in a way to show the results of the Microsoft acquisition.