sql server & entity framework date comparison

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SQL-Server

DateTime

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hey all
i have a scenario where i need to check if there are any records in a certain table with a date that is equal chosen in a calendar
here is my query:

var test = (from c in db.Courses
                            where c.StartDate < DateTime.Today.Date
                            select c.CourseID).ToList();

No matter what value i compare to, the result is always null

where have i gone wrong ??
Thanks