If you live in the UK, northern Europe, or northern states of the USA, you can assume that most fruit trees prefer to be planted in full sun. Although you probably know which direction is north or south it is not always easy to know where the sun is during the growing season.
SunEarthTools.com have developed a handy mapping tool which shows you the position of the sun during the course of the day and any time of year at your exact location.
For more details visit the main SunEarthTools.com website.