*** Each market will close early at 1:00 p.m. on Thursday, December 24, 2015. Crossing Session orders will be accepted beginning at 1:00 p.m. for continuous executions until 1:30 p.m. on this date.
https://www.nyse.com/markets/hours-calendars
The New York Stock Exchange is open Monday through Friday 9:30 a.m. to 4:00 p.m. ET. The NASDAQ Stock Market regular trading hours are from 9:30 a.m. to 4:00 p.m. ET. After Hours trading is from 4:00 p.m. to 6:30 p.m. ET. The Amex Stock Market is open from Monday through Friday 9:30 a.m. to 4:00 p.m. ET. Pre Market Trading Session is From 8:00 a.m. to 9:30 a.m. ET. See isnasdaqopen.com for online NASDAQ status.
http://www.answers.com/Q/What_time_does_the_stock_market_open_and_close_every_day
A: Closing times for stock market exchanges vary, but they generally close in the evening except on holidays. A stock market exchange is a marketplace where stocks are traded throughout the day; it functions as an entity that ensures orderly trading and efficient dissemination of price quotes for stocks on the exchange.
http://www.investopedia.com/ask/answers/040115/when-do-stock-market-exchanges-close.asp
** Each market will close early at 1:00 p.m. on Friday, November 27, 2015 and Friday, November 25, 2016 (the day after Thanksgiving). Crossing Session orders will be accepted beginning at 1:00 p.m. for continuous executions until 1:30 p.m. on these dates.
https://www.nyse.com/markets/hours-calendars
Quotes are open and firm from 4:00 a.m. to 8:00 p.m. Please Note: Closing price information reported externally by NASDAQ to market data vendors and the media is based on the price at 4:01 PM ET when the market officially closes, and is not affected by other sessions.
http://www.nasdaq.com/about/trading-schedule.aspx
The Nasdaq is an American stock exchange that serves as a global electronic marketplace for securities trading. Pre-market trading hours are from 4 a.m. to 9:30 a.m. local time, and post-market trading hours extend from 4 p.m. to 8 p.m. The normal trading hours begin at 9:30 a.m. and end at 4 p.m.
http://www.investopedia.com/ask/answers/040115/when-do-stock-market-exchanges-close.asp
Please note that once you make your selection, it will apply to all future visits to NASDAQ.com. If, at any time, you are interested in reverting to our default settings, please select Default Setting above. If you have any questions or encounter any issues in changing your default settings, please email isfeedback@nasdaq.com.
http://www.nasdaq.com/about/trading-schedule.aspx
The Swiss Exchange opens at 9:30 a.m. and closes at 5:30 p.m. local time and has no lunch period. The London Stock Exchange opens at 8 a.m. and closes at 4:30 p.m. local time with no lunch period. The New York Stock Exchange is based in New York City. The NYSE is one of the largest stock exchanges in the world, and it is a public entity.
http://www.investopedia.com/ask/answers/040115/when-do-stock-market-exchanges-close.asp
All NYSE markets observe U.S. holidays as listed here. Expand the view to see the holidays for 2015 and 2016. Please note that although NYSE Arca Equities follows the same holiday schedule as the NYSE, on days when the NYSE closes early, NYSE Arca Equities hours may vary due to its extended trading day. Review the NYSE Arca Equities section below for more details.
https://www.nyse.com/markets/hours-calendars
Trading in the stock market successfully means keeping up with a truckload of pertinent data and information. Stock trading hours may seem like a small part of that, but you’d be surprised just how many stock traders aren’t exactly sure when they open – or how many don’t think it matters either way. The truth is, when a stock exchange opens does matter, especially if you are a day trader and need to time your trades. Here is a list of opening and closing times for all the major stock exchanges in the global market today. (Beginning from American markets and moving forwards in time). New York Stock Exchange (NYSE).
http://www.wisestockbuyer.com/2012/05/what-time-do-stock-markets-open-and-close/
what time does the market close
The market closes at 4:30 p.m.