Brasília is 16 hours behind Wellington
Best overlap: 8:00 AM to 10:00 AM in Wellington is 4:00 PM to 6:00 PM in Brasília.
8:00 AM to 10:00 AM in Wellington is when Brasília is also working, at 4:00 PM to 6:00 PM their time. Because Brasília is 16 hours behind Wellington, the shared window is only about 2 hours. A fixed slot at 8:00 AM in Wellington (4:00 PM in Brasília) saves a lot of back-and-forth. Double-check the weekday, too: Brasília sits on the previous day from Wellington during these hours. Watch the DST gap — when Wellington changes its clocks and Brasília stays the same, this window slides by an hour.