Welcome to the forum Landulfo.
Normally on a GPS camera you set your time zone, and remember to account for summer time manual as dashcams do not do this automatic like our phones and computer.
The camera then get the time from GPS satellite and add to that your time zone setting, São Paulo is -3 hours.
So right now as i am in Denmark i am +1 hour time zone, but in the summer due to summer time i have to set it to +2 hours to have the correct time listed.
so your time right now is a little past 6 Monday evening, in Denmark it is a little past 10 in the evening right now.