You are downloading the Sunshine XAP file v188.8.131.52 for Windows Phone. Sunshine is a free and useful Business app: App Sunshine calculates the time of sunrise and sunset, length of day. To define a spot press button Current point or tap ... You can now download the offline XAP file to install & try it.
Download Locations for Sunshine 184.108.40.206 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Sunshine XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.