Subject: Invalid date result in specific date operations

From: Vicente Pérez M <[email-masked]>
Date: Thu, 29 Dec 2011 15:02:46 -0300

How to repeat:

date -d '2011-08-21 + 1 DAY' +%Y-%m-%d
date -d '2010-10-10 + 1 DAY' +%Y-%m-%d

These dates is just when change from normal time UTC-4 to dts UCT-3

result: invalid date

The same operation with --utc works fine.
date -d '2011-08-21 + 1 DAY' +%Y-%m-%d --utc
date -d '2010-10-10 + 1 DAY' +%Y-%m-%d --utc