The FIFA dates for 2014 to 2018 have changed according to the fifa website (draft of course):

http://www.fifa.com/mm/Document/WorldFootball/Calendar&Live/02/03/95/26/IMC2013-2018FIFAversionv28May2013_Neutral.pdf

2014
1 Match - 5 March
12 June - 13 July FIFA World Cup @ Brazil
2 Matches - 1-9 September
2 Matches - 6-14 October
2 Matches - 10-18 November

2015
9 - 31 January 2015 AFC Asian Cup @ Australia
17 January - 7 February CAF Africa Cup of Nations @ Morroco
2 Matches - 23-31 March
2 Matches - 8-16 June
14 June - 5 July CONCACAF Gold Cup @ ???
2 Matches 31 August -8 September
2 Matches 5-13 October
2 Matches 9-17 November

2016
2 Matches - 21-29 Match
2 Matches - 30 May-7 June (For none UEFA teams)
10 June - 10 July UEFA European Championship @ France
2 Matches - 29 August-6 September
2 Matches - 3-11 October
2 Matches - 7-18 November

2017
2 Matches - 20-28 March
2 Matches - 5-13 June
2 Matches - 28 August-5 September
2 Matches - 2-10 October
2 Matches - 6-14 November

2018
2 Matches - 19-27 March

Unconfirmed Dates
July 2015 CONMEBOL Copa América @ Chile
July 2016 CONMEBOL-CONCACAF Copa América Centenario @ United States
OFC Nations Cup