There are a number of challenge caches that require you to find six or more different types of caches in the same day.
Surrey Icon Challenge
WEST MIDLANDS ICON CHALLENGE
Jersey Icon Challenge
BUSY DAY!--WEST YORKSHIRE- ICON CHALLENGE
are all satisfied by the set of caches found on Thursday 8th October 2009.
8 icon challenge ( 2012 )
is satisfied by the set of caches found on Wednesday 29th February 2012 and Sunday 22nd July 2012.
Divergent: An Assiduous Cacher Challenge
is satisfied by any/all of the following sets of caches.
Oregon's Busy Day Challenge
is satisfied by the set found in Oregon on Thursday 15th August 2013.
Challenge Rule of 3 (Traditional, Multi & Unknown)
is satisfied by any/all of the following sets of caches found in 2012 or later.
8 Icon Challenge Cache
is satisfied by most of the following sets of caches.
8 Icon (In a second Country) Challenge Cache
is satisfied by the set of caches found on Tuesday 15th October 2013 in Copenhagen, Denmark.
Thursday 8th October 2009
Wednesday 29th February 2012
Sunday 22nd July 2012
Saturday 3rd August 2013
I've added in cache owners as this collection of caches also serves as qualification for
Thursday 15th August 2013 (Oregon, USA)
Tuesday 15th October 2013 (Copenhagen, Denmark)