The BeiDou-2 system began offering services for the Asia-Pacific region in December 2012. At this time, the system could provide positioning data between longitude 55°E to 180°E and from latitude 55°S to 55°N.
During which month of 2015 did the BeiDou-3 system begin offering services to Japan?
{'text': 'December', 'answer_start': 75}