When using Table view, you can select a date range from the dropdown Date range menu.
When you select Custom from the menu, you'll then have the option to set the start date and end date. These dates set the range, and then you can move to different dates while maintaining the selected range.
Use the arrows to move forward or backward in time while maintaining the same date range (e.g. six months). Click on Today to go to the date range over the current date.
You can also use the date picker to move to a different date while maintaining the same range:
The calendar administrator can select Custom as the default date range.