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FACTUAL SESSION GUIDE

23/5 Trading

A market structure that pauses for one hour each trading day. Planned and live implementations must be distinguished.

Typical hours
Twenty-three trading hours per weekday, with a daily maintenance break
What “open” means
Orders may execute only on participating venues, in eligible securities, under applicable broker rules.
Important limitation
Hours, eligible symbols, liquidity and order types vary. A broker accepting an order does not necessarily mean it can execute immediately.

Start with official schedules

NYSE hours and calendars ↗

Nasdaq holiday schedule ↗

Last verified: August 24, 2026