Return a list of the dates of the third Thursday of each month, for every month in 2015 and 2016 (24 dates total, in chronological order).
Output
[Timestamp('2015-01-15 00:00:00'),
Timestamp('2015-02-19 00:00:00'),
Timestamp('2015-03-19 00:00:00'),
...
Timestamp('2016-12-15 00:00:00')]