Earth Calendar
This not-for-profit site allows searching for holidays by date, country, and religion and also provides information on lunar phases and much more.

Heavenly Details
Provides information from the Old Farmer's Almanac with the dates and locations of solar and lunar eclipses for the year, as well as the days of the full moon for seven years.

Historic Events and Birth-Dates
Lists events and people who had/have birthdays today and you can also search for the same information for any date throughout the year.

The History Channel
The popular channel's homepage allows you to find out what important events occurred today, on your birthday, or any old day.  Also offers a world timeline and other fun features.

On This Day
From the New York Times, this site not only provides historical highlights and birthdays, but also links to relevent obits and articles from the New York Times.  Also has sections for teachers, parents, and students.

Popular Timelines
This section of the World History.com webpage lists all kinds of timelines that include timelines for history, science, people and current events.

Timelines - AlternaTime
This web site has links to just about every kind of timeline you could image.

Today's Calendar and Clock Page
Gives today's calendar date in a variety of calendars and has lots of links to other calendar pages.

The World Clock
Set your watch to the time! This Interactive World Clock calculates the local time and date for more than a hundred locations around the world.

Yahoo: Society and Culture: Holidays and Observances
From Yahoo you can link to pages for specific holidays...such as April Fools Day, Cinco de Mayo, Easter, Martin Luther King, Jr. Day, Ramadan, etc.

Yahoo: This Day In History
Find out what important events occurred today.