[whpalmer4]

I set my default due time to 5pm (a not completely unreasonable choice for tasks involving other people, which is a prime reason for something having a due date) so using "today" (or just the date) gets me the more conservative due time, and for something I know I want to get done this day but know that I've got the evening available, I have the "tonight" option. Sorting by due keeps the "tonight" stuff below the "today" stuff.