From the US Soccer website:

U.S. WOMEN TO FACE NEW ZEALAND IN SHENYANG; WIN CLINCHES SPOT IN QUARTERS:
The U.S. Olympic Women’s Soccer Team will face New Zealand on Tuesday, Aug. 12, at the Shenyang Olympic Sports Center Stadium with a win guaranteeing a spot in the quarterfinals. The USA currently sits second in Group G with three points behind Norway (six points) and a win over the Kiwis will clinch the second spot in the group, earning a quarterfinal match against the winner of Group F.

The match kicks off at 6:45 am. CT and will be broadcast live on MSNBC The USA could also qualify for the quarterfinals with a tie if Norway defeats Japan. That match will take place in Shanghai concurrently with the U.S. game.