Super weird: completed_todo_item.completed_at and todo_item.completed_at are different!!

Failures:

1) Completing todo items with completed items shows completed items as complete Failure/Error: expect(page).to have_content(completed_todo_item.completed_at) expected to find text "2016-05-16 11:09:58 -0700" in "2000-01-01 18:09:58 UTC Eggs Edit Delete" # ./spec/features/todo_items/complete_spec.rb:23:in block (4 levels) in <top (required)>' # ./spec/features/todo_items/complete_spec.rb:22:inblock (3 levels) in <top (required)>'

Here is the test:

it "shows completed items as complete" do
      visit_todo_list todo_list
      within dom_id_for(completed_todo_item) do
        expect(page).to have_content(completed_todo_item.completed_at)
      end
    end

and here is the index.html.erb output:

<% if todo_item.completed? %>
        <%= todo_item.completed_at %>
      <% else %>
        <%= link_to "Mark Complete", complete_todo_list_todo_item_path(todo_item), method: :patch %>
      <% end %>

The only thing I can think is that the printed value of .completed_at is different from the value stored in the db?!?

Has anyone ever seen this?