Apple just announced on its Investor Page that it would report its Q1 2013 earnings Jan. 23. As it does once a quarter, Apple will issue a press release at 4:30 p.m. EST with the numbers and follow with a conference call at 5 p.m. EST to discuss the results with CEO Tim Cook, CFO Peter Oppenheimer, and more. The report will give us a close look into how Apple fared during the holiday shopping season and its outlook for 2013. As of the last earnings report in October, Oppenheimer said he expected revenue of about $52 billion and diluted earnings per share of about $11.75 for Q1 2013. Past numbers, questions from investors on the conference call typically bring out new, interesting pieces of information from Apple, and you bet 9to5mac will provide full coverage. [Apple]