Does the Overnight Session Still Run in the 24-Hour Market When the US Exchange Is Closed?
No. If the US exchange is closed for a holiday, no trading occurs at all on that day, and the Overnight session is included in that. The Overnight session cannot operate independently, because it depends on the preceding and succeeding regular sessions to support the full 24-hour cycle — without them, there is no cycle for it to be part of. Trading resumes at the Pre-Market session, 16:00–21:30 WIB, on the day the exchange reopens. For example, if the US market is closed on Monday 16 February 2026 for a public holiday, that Monday shows no Overnight, Pre-Market, Regular, or After-Hours session at all, and neither does the preceding weekend. Normal trading resumes on Tuesday 17 February 2026. Under Daylight Saving Time, subtract one hour from each of these times.
- On a US exchange holiday: no trading occurs at all, and that includes the Overnight session
- Why the Overnight session cannot run alone: it depends on the preceding and succeeding regular sessions to support the 24-hour cycle
- When trading resumes: at the Pre-Market session, 16:00–21:30 WIB, on the day the exchange reopens
- Worked example: with the US market closed on Monday 16 February 2026, no session runs on that Monday at all
- The weekend before: Sunday 15 February 2026 is closed as a weekend, so the pause runs across both days
- Back to normal: Tuesday 17 February 2026 shows all four sessions running as usual
- Daylight Saving Time: subtract one hour from each of these times while DST is in effect
Related questions:
Q: Why can the Overnight session not run on its own?
Because it is one segment of a continuous cycle rather than a standalone market. The Overnight session sits between the Post-Market session that closes the previous trading day and the Pre-Market session that opens the next one. If the regular sessions on either side are not running because the exchange is closed, there is no cycle for it to belong to.
Q: When exactly does trading come back after a holiday?
At the Pre-Market session on the day the exchange reopens, which runs 16:00–21:30 WIB in standard time and 15:00–20:30 WIB under Daylight Saving Time. The Overnight session earlier that same day does not run, so Pre-Market is the first point at which you can place an order again after the pause. Nothing runs between the previous close and that Pre-Market reopening.
Q: What happens to an order I placed before the holiday?
Orders in the extended sessions use DAY validity, so an unfilled order expires at the end of its own cycle rather than carrying into the closed day. Any reserved USD balance is returned automatically when it lapses, and you would place a fresh order once trading resumes at Pre-Market on the reopening day. Nothing is held over the closed day on your behalf.
Q: Does a weekend work the same way?
Effectively yes. The weekly window closes at Saturday 08:00 WIB and reopens Monday 08:00 WIB, so no session runs across the weekend at all. When a Monday holiday follows a weekend, as in the February 2026 example above, the two run together into a single continuous pause with no trading in between them. Trading resumes at Pre-Market on the Tuesday in that scenario.