SunCalc - Find out where the sun will be at any time in any location
YOURLS - YOURLS is a website that contains all the tools you need to create and launch your very own URL shortener. URL shorteners like bitly or TinyURL are fine for public use, but they offer limited options in terms of URL customization.
Alpenglow - Never miss a incredible looking sunrise or sunset again
TinyURL - Are you sick of posting URLs in emails only to have it break when sent causing the recipient to...
Solaris Sky Calendar - An astronomy calendar right in your pocket
Sundial App - Sun & Moon times and alerts for iPhone, iPad, & Apple Watch