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About
USMarketClock provides instant, at-a-glance information about whether the US stock market is currently open for trading.
Why
Knowing if the market is open shouldn't require searching through multiple websites or doing timezone math. We give you the answer immediately.
What we track
- Regular Hours: 9:30 AM - 4:00 PM ET
- Pre-Market: 4:00 AM - 9:30 AM ET
- After-Hours: 4:00 PM - 8:00 PM ET
- Holidays: All NYSE/NASDAQ closures
How it works
All calculations happen in your browser using Eastern Time. No API calls, no external dependencies—just accurate time logic that updates every second.
Accuracy
Our holiday calendar is updated annually. Unexpected closures may not be immediately reflected. Always verify with your broker for important trades.