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The "Jumper" at the top of the window allows you to:
1) Skip back a week
2) Skip back one day
3) View today
4) Skip forward one day
5) Skip forward one week. 

Alternatively, you can select a date from the calender on the right-hand side of the window. The "Calendar" allows you to view any date using the < and > buttons. NB: Sundays and Bank Holidays are show in Green