Jan. 19

Four NFL teams will compete in two separate games today to see which will advance to the Feb. 2 Super Bowl XLVIII. The AFC and NFC Championship games represent the final time in an NFL season when teams can enjoy an official home field advantage. Both Seattle and Denver entered into the 2014 playoff season with the right to play their conference championships at home.

Jan. 20

The November agreement by a group of six world powers and Iran to limit the nation’s nuclear program will come into effect today. The United States, France, the United Kingdom, China, Russia, Germany, and Iran signed the deal, which dials down some of the economic sanctions imposed on Iran for pursuing a nuclear program. In exchange, Iran has promised to halve portions of their nuclear program.

Jan. 25

Members of the original development team, as well as corporate dignitaries and other fanboys, will be on hand when Apple celebrates the 30th anniversary of the Macintosh computer in Cupertino, Calif. Apple officially debuted their revolutionary personal computer on Jan. 24, 1984, just days after a memorable commercial directed by Ridley Scott aired during the Super Bowl.

Jan. 26

Rapper and television star LL Cool J will host the 56th Annual Grammy Awards, which will be broadcast live on CBS. Rapper Jay Z leads all musicians with nine award nominations. The National Academy of Recording Arts and Sciences, which presents the Grammy Awards, will name Carole King as their person of the year for her philanthropic work in 2013.

Jan. 31

Federal Reserve Vice Chair Janet Yellen will take over as Chairman of the Fed today when Ben Bernanke’s term expires. The Senate confirmed Yellen, 67, by a 56-26 vote. Along with Yellen, Clinton Administration Treasury Secretary Lawrence Summers had been rumored to succeed Bernanke, but his candidacy proved unpopular in the U.S. Senate. Yellen will become the first female to chair the Federal Reserve.