Test Fixtures - Oracle date

What is the proper way of setting a test fixture for a date field in Oracle db? I've tried various ways like switching the year and no luck.

My test fixture is:

first:   id: 1   department_id: 1   last_name: test1   first_name: first1   birth_date: 2004-01-26 00:00:00   country_of_origin: Canada   job_title: Programmer   created_on: 2004-01-26 00:00:00   created_by: testuser   updated_on: testuser   created_on: 2004-01-26 00:00:00   user_id: testuser

I keep on getting ActiveRecord::StatementInvalid: OCIError: ORA-01841: (full) year must be between -4713 and +9999, and not be 0....

This should work:

created_on: <%= Time.now.to_s(:db) %>

Thanks Nicholas. The reason why it didnt work for me was because a typo. I have 2 created_on fields which conflicted.