Nov. 5, 2019
9:22 p.m.
The recent changes to Brazil were published as part of tzdb 2019b, released 2019-07-01. Evidently these changes have not propagated to your system, so you'll need to update it (preferably to 2019c, the current release). The details for this depend on your platform; as an R user, you might consult <https://svn.r-project.org/R/trunk/src/extra/tzone/Notes> to get started.