To be honest, I was confused when I started following U.S. stocks—what are the exact times? When does the U.S. market open? And why do people talk about different times? I found out that the whole thing is a bit more complicated than you might expect.

The truth is that the U.S. market doesn’t open at the same time for everyone. It opens from Monday to Friday at 9:30 AM New York time, but for us in Arab countries, the times are completely different. I’m in Saudi Arabia, so the market opens at 5:30 PM during standard time, while in the UAE it opens at 6:30 PM. Egypt is a little different because of time differences.

The important thing I missed at first is that trading doesn’t end at 4:00 PM New York time. There are pre-market sessions from 4:00 AM to 9:30 AM, and after-hours sessions from 4:00 PM to 8:00 PM. A lot of important news comes out during these times—company earnings, economic data, statements from the Federal Reserve—and the stock can move before the official trading session even starts.

As for when the U.S. market opens for you personally, all you need to do is calculate the time difference between you and New York. If you’re in the Gulf, add 8 hours to U.S. standard time, and 7 hours during U.S. summer time. If you’re in Egypt or the Levant, add 7 hours in winter and 6 hours in summer.

Public holidays matter a lot, by the way. The exchange is completely closed on certain days such as رأس السنة, مارتن لوثر كينج, الجمعة العظيمة, عيد الاستقلال, عيد الشكر, and عيد الميلاد. And on some days it closes early at 1:00 PM New York time instead of 4:00 PM—this happens the day after عيد الشكر and on Christmas Eve.

You wouldn’t believe how many times I tried to enter a trade on a holiday! Trading is very sluggish and spreads get wider. So before you open a trading account, make sure you check the economic calendar.

The best trading times for me are the first hour after the open—from 9:30 to 10:30 AM New York time. Momentum is strong, liquidity is high, and stocks that have news or earnings tend to move strongly. But the last hour before the close—from 3:00 to 4:00 PM—is also important. Institutions rebalance their portfolios, and end-of-day closing orders show up.

Mid-session is often calmer, especially if there’s no economic data or major news. But don’t underestimate this period—one Federal Reserve statement or a strong move in tech can change everything.

There are many factors that move the market during the session. Economic data like inflation and jobs changes interest-rate expectations quickly. Company earnings—especially Apple, Microsoft, Amazon, and Tesla—impact the Nasdaq and S&P 500 directly. Statements from the Federal Reserve chair can flip the market upside down. And even geopolitical news can play a role.

One important thing that nobody focuses on enough is Federal Reserve meetings. These are among the events that most affect stocks—not necessarily because of the interest rate decision itself, but because of the tone and the statements. The Federal Reserve holds meetings about every two months, and the market prices in expectations 2 or 3 days before the meeting.

Earnings season is also very important—January, April, July, and October. During these periods, major stocks announce their results, and the market moves strongly. I don’t focus only on earnings and revenue; I also look at future guidance. A stock may rise even with average results if the company provides a strong growth outlook.

The “Quadruple Witching” day is also a strange one. That day, options contracts and futures contracts expire at the same time. It happens on the third Friday of March, June, September, and December. The momentum can be strong and even misleading, so I avoid it unless I really understand the game.

Honestly, understanding when the U.S. market opens isn’t enough—you also need to understand the best time to enter, when to avoid trading, and when to expect big moves. Extended trading outside official hours carries higher risks: lower liquidity, wider spreads, and potentially misleading price action. That’s why I prefer to focus on the official session unless I have enough experience.

In the end, the best advice I can give you is: don’t enter a trade just because the market has opened. Wait until the first wave of movement calms down, check the economic calendar before the session, and use stop-losses seriously. Start with a demo account or a small position size to test your strategy. And most importantly—don’t trade with money you can’t afford to lose.