[technobabbler]

This help domestically, but not across cultures that don't use 12 hour time.

[keiferski]

You can always just say 23:59 instead of 12:00 A.M.

[technobabbler]

Believe it or not, some Americans will be confused by that. Our modern educational systems don't really prepare them for international communications.

It just depends on your audience & context...