The 2015 calendar:

15/03 Australia
29/03 Malaysia
05/04 Bahrain
19/04 China
10/05 Spain
24/05 Monaco
07/06 Canada
21/06 Austria
05/07 Britain
19/07 Germany *
26/07 Hungary
23/08 Belgium
06/09 Italy
20/09 Singapore
27/09 Japan
11/10 Russia
25/10 USA
01/11 Mexico
15/11 Brazil
29/11 Abu Dhabi

* contract with either Hockenheim or Nurburgring for the race on July 19, yet to be resolved