Google added a new "Sunrise and Sunset" feature for search, that gives the precise times of sunsets and sunrises for any location around the world.
"Unlike the weather, sunrises and sunsets are quite predictable, and as a result, we don't use a data source. Instead, we calculate sunrise and sunset times based on latitude, longitude and the current time. This calculation has been of interest to astronomers and mathematicians for millennia, so they've had time to get it just right. And for most locations, it's accurate to within a single minute," said Google.