U.S. markets will be closed Wednesday for the Juneteenth holiday.
NYSE and Nasdaq will be closed
The Securities Industry and Financial Markets Association (SIFMA) is recommending the US Bond market closed that day. So it is.
FX desks will be closed, perhaps the odd skeleton crew
--
As for futures markets, for Equity Products at the CME (times below are US central time, add an hour to get US Eastern time):
Tuesday, June 18th Regular Hours
Wednesday, June 19th
- 12:00pm Halt
- 5:00pm Re-Open
Thursday, June 20th Regular Hours
For other products at the CME I'll refer you to this:
