Idea for date(1) improvement.

[NAKAMURA Takeshi]

On Wed, 08 Sep 2004 12:51:00 +0200,
 Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:

> 	date -w "2 days ago"

2days ago:
 date -v -2d

2hours after:
 date -v +2H
...etc