[CentOS] the at command

Mon Jan 21 20:21:09 UTC 2013
Jerry Geis <geisj at pagestation.com>

I was trying to use the 'at' command.

Does it not have "resolution" to the second?

When I run it with 'at -f /tmp/tt.sh "01/21/2013 15:20:45"
syntax error. Last token seen: 15:20
Garbled time

How do I run a command in the future including "seconds".