Is B3 open on Wednesday 1 July 1998?

Yes

Yes. B3 is open on Wednesday 1 July 1998, trading from 10:00 to 17:00 GMT-3 (São Paulo time).

10:00–17:00 GMT-3

Regular hours

Related markets on 1 Jul 1998

NYSE	09:30–16:00
Nasdaq	09:30–16:00
TSX	Canada Day
CME Equity	17:00^{−1 previous day}–16:00
LSE	08:00–16:30
Xetra	09:00–17:30
Euronext Paris	09:00–17:30
SIX	09:00–17:30
TSE Tokyo	09:00–15:00
HKEX	Hong Kong Special Region Establishment Day