Bill Ritter

The fourth and final day of the Democratic National Convention will be called to order at 5:00 PM EST on Thursday, with a theme of "Change You Can Believe In."

The final day's events will take place at INVESCO Field at Mile High, where over 70,000 people are expected to attend.

Featured speakers will include Colorado Gov. Bill Ritter (D), former Vermont Gov. and Democratic National Committee chairman Howard Dean (D), New Mexico Gov. Bill Richardson (D), U.S. Rep. and U.S. Senate candidate Mark Udall (D-Colo.), Virginia Gov. Tim Kaine (D), former Vice President Al Gore (D) and U.S. Sen. Dick Durbin (D).

U.S. Sen. Barack Obama (D-Ill.), the Democratic presidential nominee, is scheduled to address the convention at 10 p.m. EST.

The full schedule is below.

A two-day conference on creating clean energy technology -- co-hosted by U.S. Sen. Harry Reid (D-Searchlight) -- will bring prominent politicians from around the country to Las Vegas, beginning Monday.

The National Clean Energy Summit will feature presentations from former president Bill Clinton, New York Mayor Michael Bloomberg and billionaire political advocate T. Boone Pickens.

The summit, scheduled to be held at the University of Nevada Las Vegas, begins with a keynote speech from Clinton Monday afternoon and continues with a series of panels Tuesday.

Western governors, including Arizona's Janet Napolitano (D), Colorado's Bill Ritter (D) and Utah's Jon Huntsman (R), are on the list of panelists, as is state Sen. Dina Titus (D-Henderson), who is challenging for U.S. Rep. Jon Porter's (R-Henderson) seat in Congress.