Real Housewives of Orange County Open Casting Call, 5 p.m.

In front of Macy's. Women who are open to sharing their family lives, professional endeavors and active social calendars for the cameras are invited to meet with casting producers, who are looking for strong and confident women residing in South Orange County. Interested women should live life unabashed, have a rich Southern California lifestyle and consider themselves influential in their community.

South Coast Plaza, 3333 Bristol St., Costa Mesa, CA; 714-241-1700

The Science of Hockey, 10 a.m.-close

Visitors will experience the colder side of science as they explore physics, physiology and flying pucks! No helmets required but the icy inter-actives won't be for rookies. Exhibition highlights will include a Zamboni Machine, Penalty Box, Broadcast Booth and more.

Discovery Science Center, 2500 N. Main St., Santa Ana, CA; 714-542-2823