Every year, the Chicago River is dyed green on St. Patricks Day.

Here's a look at some of the news events on tap for this weekend:

Saturday, March 13

- Thousands are expected to converge on Chicago's South Side for the annual St. Patrick’s Day parade  and celebration, which includes dyeing the Chicago River green.

- Actor Alan Cumming will host the Gay and Lesbian Alliance Against Defamation (GLAAD) ceremony in New York recognizing the media for fair and accurate representation of members of the lesbian, gay, bisexual and transgender community, and the issues that affect them. 

Sunday

- Don't forget to set your clocks ahead before you go to bed tonight.  Daylight Savings Time begins at 2 a.m. ET on Sunday.

- It's Pi day, when math students of all ages and other aficionados celebrate the number with pi recitations, pie-baking, pie-eating contests and math-related activities.  Read more

- NBC's 'Celebrity Apprentice' premieres tonight.  The line-up includes former Illinois Gov. Rod Blagojevich, who faces federal charges of allegedly trying to receive financial favors in exchange for an appointment to the U.S. Senate seat vacated by Barack Obama when he became president. There is a status hearing for his fraud and corruption trial scheduled on Wednesday.

- Anti-government protesters are expected to flood Thailand's capital this weekend.  Donning red shirts, the protesters began rallying on Friday in support of the former prime minister who was ousted in a bloodless military coup in 2006.