The Official Open and Close Times The official times are as follows: the market opens at 9:30 AM Eastern Time and closes at 4:00 PM Eastern Time. Additionally, the early close days—typically the day before major holidays like Independence Day or Christmas—alter the standard 4:00 PM close, usually moving it to 1:00 PM ET.
How Daylight Saving Time Affects US Market Hours
The exchange observes specific holidays, such as New Year's Day, Independence Day, and Christmas, where trading is entirely closed. This schedule ensures consistency and fairness across the electronic trading platforms that facilitate billions of transactions daily.
This translates to different local times across the country; for example, it is 6:30 AM in California and 8:30 PM in London during Standard Time. The core schedule is fixed year-round, although the clock shifts with daylight saving time changes in March and November.
How Daylight Saving Time Affects US Market Hours
However, these times remain the anchor for global finance. Pre-market trading runs from 4:00 AM to 9:30 AM ET, allowing investors to react to news or earnings released before the open.
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