Brasília is 4 hours behind Lagos
Best overlap: 12:00 PM to 6:00 PM in Lagos is 8:00 AM to 2:00 PM in Brasília.
Target 12:00 PM to 6:00 PM in Lagos, which lands at 8:00 AM to 2:00 PM for the Brasília side. Brasília is 4 hours behind Lagos, but you'd hardly notice — 6 hours of shared hours makes this feel like working in neighbouring time zones.