Is B3 open on Wednesday 23 August 2017?

Yes

Yes. B3 is open on Wednesday 23 August 2017, trading from 10:00 to 17:00 GMT-3 (São Paulo time).

10:00–17:00 GMT-3

Regular hours

Related markets on 23 Aug 2017

NYSE	09:30–16:00
Nasdaq	09:30–16:00
TSX	09:30–16:00
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	Trading Suspended for the Whole Day due to Severe Weather