How many solar eclipse during  January 15-16 and august 21-22 on august 21, 2017?
create table table_25287007_2 (january_15_16 varchar, august_21_22 varchar, PRIMARY KEY (january_15_16))
select january_15_16 from table_25287007_2 where august_21_22 = "august 21, 2017"