The race date filters allow you to research the past in a variety of ways, below the screen image is a description of each filter.

Filtering by Days, Weeks, Months & Years
Using the first date filter you can restrict your research to a number of days, weeks, months or years backwards from today's date.
Filtering by Years
The list of years allows you to restrict the search to one, two or multiple years by unticking each year. You can quickly untick or tick all years by right clicking inside the list.
Filtering out Months
Use the list of months to filter out any months you do not require by unticking them. You can quickly untick or tick all months by right clicking inside the list.
Filtering by Declaration Types
This filter allows you to only research horses, jockeys or trainers that had runners on the day you choose in the calendar box.
This is useful in many ways, for instance, you may want to find the horses running on a day that have good form on the prevailing going, whatever that might be, this tool makes that simple.
You can also use this to look at past runners on any day and research statistics that happened prior to the day you are seeking.
Filtering by Race
With the relevenat race declaration type selected, use this list to select a sepecifc race carded on the date selected in the calander
Filtering by Course
With the relevenat race declaration type selected, use this list to select a sepecifc cousre for the date selected in the calander