Anyway, I just set the correct time in my new Maté Live USB with persistence,
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
However, in the summer, starting some time in October, down south in places like Rio and São Paulo they have summer time, but here in the north we don't because the length of the day hardly changes. So the time displayed might be an hour out half the year.
Incidentally, for anyone who's interested, here is a way to make Windows 7 use UTC. I used the second method, executing the .reg file:
http://mikebeach.org/2011/04/10/windows ... me-issues/
Windows allows you to toggle summer time use on or off. Obviously it only makes a difference once summer time is in force in the parts of Brazil that use it.