Velakor Astro is a free Java J2ME MIDP CLDC 1.1/MIDP 2.0 software for mobiles such as Nokia, Motorola and Sony Ericsson that allows displays the sunrise and sunset time for any city in the world based on latitude, longitude and gmt offset. For a list of cities and their latitude, longitude, gmt offset, click here. For cities not listed:

1) Goto www.maporama.com
2) Enter your address in the Maps section and click GO
3) The map displayed will show the latitude/longitude in the bottom corner.