user: Question: What day was United States the opposing team?
Columns: ['Opposing Team', 'Against', 'Date', 'Venue', 'Status', 'Report']
Types: ['text', 'real', 'text', 'text', 'text', 'text']
Sample row: ['Canada', 10.0, '02/06/2001', "Fletcher's Fields , Markham", 'First Test', 'BBC report']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opposing Team" = 'United States';