see this. http--www.nasdaq.com/symbol/spy/dividend-history. 2017 dividend
12/15/2017 | Cash | 1.351 | 12/14/2017 | 12/18/2017 | 1/31/2018 |
9/15/2017 | Cash | 1.235 | 9/14/2017 | 9/18/2017 | 10/31/2017 |
6/16/2017 | Cash | 1.183 | 6/16/2017 | 6/20/2017 | 7/31/2017 |
3/17/2017 | Cash | 1.033 | 5/22/2017 | 3/21/2017 | 4/28/2017 |