The World Cup starts on Feb-14-2015 (Australia)/Feb-13-2015 (USA) with the first Pool A matchbetween hosts New Zealand and Sri Lanka, in Christchurch. The same day Australia take on England in Melbourne to start things off for Pool B.
There will be a total of 42 group stage matches to decide the 8 quarter finalists.
Pool A consists of: England, Australia, Sri Lanka, Bangladesh, New Zealand, Afghanistan, and Scotland.
Pool B will have: South Africa, India, Pakistan, West Indies, Zimbabwe, Ireland, and UAE.
The quarter finals will be held on 4 consecutive days (March 17-20) in Sydney, Melbourne, Adelaide, and Wellington respectively.
The two semi-finals will be on March 23rd and 25th in Auckland and Sydney, with the final slated for Sunday, March 29th (Aus)/Saturday, March 28th (USA) in Melbourne.
You can download the .ics calendar file from ESPNCrincinfo (here). This can be easily synced with the calendar of your choice (Outlook, Google Calendar, etc.) as well as your mobile calendars.