The co-ordinates above have nothing at all to do with the location of the cache, which is a 35mm film canister containing a log book and (necessarily short) pencil, so it’s best to bring your own writing implement.
As an experienced geocacher and puzzle solver, you will be able to associate a different five digit number (abcde) with each of the dates mentioned in the co-ordinates below. The letter in brackets represents which of the five digits you need to choose, so if the number is 54321 and the letter is (c), you would choose 3, and if it is (e) the answer is 1.
The co-ordinates for this cache are:-
North 26 November 1990 (d), 04 July 1991 (b) degrees
23 February 1992 (e), 30 August 1993 (e) point
16 July 1996 (c), 06 November1997 (b), 07 October 1999 (b) minutes
East 12 September 1996 (e), 11 May 2000 (e), 16 July 2000 (d) degrees
30 January 2001 (a), 29 January 2003 (b) point
21 December 2003 (c), 20 March 2004 (d), 17 October 2007 (c) minutes
All should be clear now.
You can check your answers for this puzzle on Geochecker.com.