Each geocacher can earn Souvenirs by finding caches on specific days, as defined by Groundspeak. I’ve now collected a few, and thought I would gather the list here, in the order they were acquired, along with a link to the logs of caches which earned me them.

Earned on 13/09/2008

Earned on 30/06/2009

Earned on 10/10/2010

Earned on 20/08/2011

Earned on 26/01/2012

Earned on 29/02/2012

Earned on 02/09/2012

Earned on 13/07/2013

Earned on 01/08/2013

Earned on 07/08/2013

Earned on 26/08/2013

Earned on 01/08/2014