Question: What is the start date and time of the walk that ends March 28, 2005, 11:31?
Schema: create table table_22385461_6 (start___utc__ varchar, end__utc_ varchar, PRIMARY KEY (start___utc__))
SQL: select start___utc__ from table_22385461_6 where end__utc_ = "march 28, 2005, 11:31"