Feature request: Latitude/longitude format conversion

Latitude and logitude may be found amongst EXIF data and elsewhere but may not be in the form required by programs such as Google Earth. Conversion can be tedious, especially if it involves conversion between decimal fractions and minutes and seconds and can be error prone if, for example, you can't remember whether positive longitude is East or West (and perhaps for our antipodean friends, whether South is positive or negative).

The ideal solution would parse virtually any input format and generate a range of formats required by common GIS systems, and possibly a flexible format along the lines of the Unix date command.