I've found myself in a situation where I need to cull a few hundred contacts out of thousands, where the dividing line is a particular modified date *and time," for example: all contacts modified today after 3:10pm.

I don't seem to be able to do that. As I recall, that was possible in 1.9 ?

Is there a way to get a list sorted by modified date with time?

Richard,

If you go to the Column View in Contacts, you can add the column "Modified." Then, sort by this column. Not quite as easy as an actual find, but it shosuld do the trick!