[O] tsia-up sorting strategy sorts agenda by date and ignores time. How can I change that?

[Arkady Grudzinsky]

Hi,

I'd like to sort my tasks in agenda by inactive creation
timestamp which includes the time portion.  I have found that
tsia-up strategy ignores the time portion of the timestamp.  Is
there a way to take time into account?

Thanks.

-- 
Arkady