The 5 days ARE the test of the foreign server. These 5 days are described: "if we are able to hold five days of tests with no issues". This important test is the test "originally" called "third test" or "third phase test." It is very clear that this foreign server test will be held from Monday Nov 19 to Friday Nov 23.
The final Alpha phase is the Global Test starting Nov 26. Now these dates are subject to change if the testing reveals major problems.