Below are links to holiday and hours of operation information for NYSE Euronext's markets.
NYSE is open from Monday through Friday, 9:30 a.m. to 4:00 p.m. ET., except on U.S. holidays.
Although NYSE Arca follows the same holiday schedule as the NYSE, on days when the NYSE closes early NYSE Arca hours may vary due to their extended trading day.
Trading hours at NYSE MKT Equities are Monday through Friday 9:30 a.m. to 4:00 p.m. ET. NYSE Amex Options trading hours vary by product.
NYSE Bonds are traded in three sessions – Early Trading, Core Trading, and Late Trading – in addition to two auctions.
ArcaEdge systems will accept orders during pre-open hours, however securities are not traded until core trading hours.
For NYSE and NYSE MKT equity trading license holders, the Exchange currently offers a two sided crossing session for program trades through its Electronic Filing Platform(EFP).
NYSE Liffe's Derivatives markets will be open Monday to Friday throughout 2012, except on select holidays.
NYSE Liffe U.S. trading hours vary by product.