archive.is Memento, 3 years 15 days after

http://archive.md/20130115035624/http://www.billboard.biz/bbbiz/charts/yearendcharts/2011/pop-digital-songs-yearend

15 Jan 2013 03:56:24 GMT  [ +3 years 15 days from requested date ]

Internet Archive Memento, 5 years 92 days after

https://web.archive.org/web/20150402130709/http://www.billboard.biz/bbbiz/charts/yearendcharts/2011/pop-digital-songs-yearend

02 Apr 2015 13:07:09 GMT  [ +5 years 92 days from requested date ]