Yes, it is possible to create a continuous date range in Excel. Here are the steps to achieve this:

1. Type the first date range in two separate cells. For example, in cell A1, type 9/14/09 and in cell B1, type 9/20/09.
2. Type the second date range in two separate cells, below the first date range. For example, in cell A2, type 9/21/09 and in cell B2, type 9/27/09.
3. Select both cells containing the first date range (A1:B1) and the second date range (A2:B2).
4. Click and drag the fill handle (a small square at the bottom right corner of the selection) down the column to automatically fill in the continuous date ranges for the rest of the year.
5. If the dates do not continue to fill in, right-click on the fill handle and select "Fill Series" from the drop-down menu.
6. If you want to change the date range to a different week, simply type the new dates in the appropriate cells and repeat steps 3-5.

By following these steps, you can easily create a continuous date range in Excel and have it automatically fill in for the rest of the year.