Prefer Time.current to Time.now

app/models/card/statuses.rb

@@ -20,7 +20,7 @@ module Card::Statuses
   private
     def update_created_at_on_publication
       if will_save_change_to_status? && status_in_database.inquiry.drafted?
-        self.created_at = Time.now
+        self.created_at = Time.current
       end
     end
 end

test/models/card/statuses_test.rb

@@ -65,6 +65,6 @@ class Card::StatusesTest < ActiveSupport::TestCase
 
     card.publish
 
-    assert_equal Time.now, card.created_at
+    assert_equal Time.current, card.created_at
   end
 end