References Sources: Time
Current time and time zones
Official U.S. Time
Local Times Around the World
"This guide attempts to list all of the world's countries, and many of its islands, with a pointer to the local time in the region." Also includes latitude and longitude.
The World Clock
World Time Server
World Time Zone Map from the U.S. Naval Observatory
Sunrise and sunset times
NOAA Sunrise/Sunset Calculator
Complete Sun and Moon Data for One Day from the U.S. Naval Observatory
Sun or Moon Rise/Set Table for One Year from the U.S. Naval Observatory
Other Astronomical Data from the U.S. Naval Observatory
Yahoo! list of time sources