Nodrog, pull the minute hand off and move it back by 15 minutes and put it back on. If it is off by 5 minutes after that you need to pull it again and adjust it by putting a square object, like a small square file, in the hand bushing and move the hand backward on the bushing. If it does not have a bushing in the hand for some reason then you will have to get a profession to adjust it from inside.
Stevens Clocks, June 2009