Parking close by the start point for this cache is limited, so I have given a waypoint for you to put your car and walk to the site. This should take you only 10 minutes at the most.
Once at the published co-ordinates, look carefully at the sign the cache is named after. Find the date and let this be ABCD.
The cache is located at
N51 AC.(B-A)(C-A)B
W001 C(A+D).(B-C)(D+A)(C+D)