There are three kinds of reports:
Month-to-date unit sales: There's a drop-down list for Amazon.com, Amazon UK, Amazon DE, Amazon FR, Amazon ES, and Amazon IT.
These are updated either in real-time or close to it. A sale reported here can show up as much as five hours before the sales number on the public pages updates.
Prior Six Weeks Royalties. These show the sales on a weekly basis Sunday-to-Saturday, updated each Sunday.
Prior Months Royalties. This is a spreadsheet showing the official sales and income, posted on or about the 15th of the following month.