[Lazarus] Date format conversion function?

[Howard Lee Harkness]

I am using SQLite in a small application, and using TDateEdit to pick
a date. The date is returned in the Text field (I can't find a
DateTime property in this control) in the format 'mm/dd/yyyy', and to
use INSERT in SQLite, it wants dates in the format 'yyyy-mm-dd'. Yes,
I can write a reformatting function, but I would expect one to be
already available somewhere.

I'm having some trouble believing that there is no such function in
Lazarus, but I just can't find it. If somebody here knows where such a
function (or equivalent functionality in a class) may be found, please
enlighten me.

TIA!
-- 
Howard Lee Harkness
(214) 390-4896