NDOG: New Day and New Week Opening Gap
Also known as: NDOG, NWOG, new week opening gap, new day opening gap, weekend gap
What is it?
A new day opening gap is the untraded band between the 5pm New York close and the 6pm New York reopen, and a new week opening gap is the same thing across the weekend - between Friday's 5pm close and Sunday's 6pm open. Forex closes for one hour each weekday evening and for roughly 48 hours each weekend, and prices rarely reopen exactly where they stopped. If EUR/USD closes Friday at 1.0847 and reopens Sunday at 1.0879, that 32-pip band is the new week opening gap.
Nothing traded inside it, which puts it in the same family as any other imbalance - a band the market has unfinished business with. Traders draw it as a zone and keep it on the chart, often for weeks, because price returns to these levels repeatedly. The weekend version carries more weight than the nightly one, simply because it spans more time and more accumulated news.
Many ICT traders keep the last five weekly gaps marked and treat the band's midpoint as the level that most often produces a reaction. Like every level, it describes where price has behaved a certain way before, not where it must behave that way next.
Why it matters: Opening gaps mark bands the market never traded across a close, and price returns to them often enough that they act as recurring support and resistance.
It supplies reference levels that persist for weeks, which shapes where targets and invalidation sit rather than triggering entries directly.
Real-world example
EUR/USD closed Friday at 1.0847 and reopened Sunday at 1.0879. Price traded back into that 32-pip band twice over the next three weeks, reacting near its 1.0863 midpoint both times.
How SignalBots handles it
SignalBots marks the session each signal fires in, so an entry taken near a weekend reopen is visibly distinct from one taken in full London liquidity. See /risk-warning.
Pro tip
Keep the last five weekly gaps on the chart rather than only the newest - price reaches back to older bands far more often than most traders expect.
Common pitfalls
Trading the reopen itself. Spreads at the Sunday open are routinely several times normal, so a technically correct entry can still fill at a poor price.
Frequently asked questions
What is the difference between NDOG and NWOG?
Only the closure they span. NDOG covers the one-hour daily break between 5pm and 6pm New York; NWOG covers the weekend from Friday 5pm to Sunday 6pm. The weekend band is wider and generally treated as more significant.
Do these gaps always get filled?
Most are eventually revisited, but there is no rule that they must be, and a gap created by a genuine repricing can stay open indefinitely. Treat it as a level of interest rather than a guaranteed target.
Which price do I use for the gap edges?
The last traded price before the close and the first traded price after the reopen. Using the candle body versus the wick changes the band slightly, so pick one convention and keep it consistent.
Why is the midpoint singled out?
It is the consequent encroachment of the band - the level ICT treats as the point of interest inside any imbalance. In practice it gives one specific price to watch instead of a wide zone.
Should I trade through the weekend to avoid the gap?
Holding through a weekend means accepting gap risk with no ability to manage the position, and a stop can fill well past its level on the reopen. That is a position-sizing decision, and your capital is at risk.
Trading involves substantial risk of loss. Historical and backtested results do not guarantee future performance. Read the full risk warning.
