CREATE TABLE table_75882 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Game site" CLOB, "Record" CLOB, "Attendance" CLOB)

When did the Texans play at LP Field?
SELECT "Date" FROM table_75882 WHERE "Game site" = 'lp field'
SELECT "Date" FROM "table_75882" WHERE "Game site" = 'lp field'