,--------------------+--------+--------+----------.
| Task               | Start  | End    | Duration |
+--------------------+--------+--------+----------+
| Week first day     | Nov 9  | Nov 9  | 1 day    |
+--------------------+--------+--------+----------+
| Task 7 days        | Nov 9  | Nov 15 | 7 days   |
+--------------------+--------+--------+----------+
| Task 6 days        | Nov 9  | Nov 14 | 6 days   |
+--------------------+--------+--------+----------+
| Task 5 days        | Nov 9  | Nov 13 | 5 days   |
+--------------------+--------+--------+----------+
| Task 4 days        | Nov 9  | Nov 12 | 4 days   |
+--------------------+--------+--------+----------+
| Task 3 days        | Nov 9  | Nov 11 | 3 days   |
+--------------------+--------+--------+----------+
| Task 2 days        | Nov 9  | Nov 10 | 2 days   |
+--------------------+--------+--------+----------+
| Task 1 day         | Nov 9  | Nov 9  | 1 day    |
+--------------------+--------+--------+----------+
| Week last day      | Nov 15 | Nov 15 | 1 day    |
+--------------------+--------+--------+----------+
| NextWeek first day | Nov 16 | Nov 16 | 1 day    |
`--------------------+--------+--------+----------'