lazlo:/usr/share/zoneinfo/Brazil# cat verao.2007.zic
Rule Brazil 2007 only - Oct 14 00:00 1 D
Rule Brazil 2008 only - Feb 16 00:00 0 S

Zone Brazil/East -3:00 Brazil BR%sT
Zone America/Sao_Paulo -3:00 Brazil BR%sT
lazlo:/usr/share/zoneinfo/Brazil# zic verao.2007.zic
lazlo:/usr/share/zoneinfo/Brazil# cp /usr/share/zoneinfo/Brazil/East /etc/localtime
lazlo:/usr/share/zoneinfo/Brazil#