Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
Note: The first year recorded by this calendar is 1583, the
first full year of the Gregorian
calendar. 1753 was the first full year in which the U.S. (then a
British colony) began using the Gregorian calendar.
