The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the Wayback Machine.
Web wide crawl with initial seedlist and crawler configuration from October 2010
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20110106184748/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/systray
Systray is positioned on the left hand side of your computers tool bar. It contains many small icons that represent what programs are running. It also shows the time and if you click into any of the icons they will open up.