Nwog Ndog Calculator
Calculate New Week Opening Gap and New Day Opening Gap levels for ICT-based trading. Enter values for instant results with step-by-step formulas.
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer
Nwog Ndog Calculator
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Formula: Gap Midpoint (CE) = (Gap High + Gap Low) / 2
Worked example — Gap: 1.0850 - 1.0875 (25 pips) | CE: 1.08625 | Direction: Bullish | Price in Lower Half
Formula
Gap Midpoint (CE) = (Gap High + Gap Low) / 2
The gap is defined by the previous close and current open. The midpoint (consequent encroachment) represents the 50% level of the gap. Gap High and Gap Low are the upper and lower bounds. Quarter levels divide the gap into four equal segments for finer analysis.
Worked Examples
Example 1: Bullish Weekly Opening Gap (NWOG)
Problem:EUR/USD closes Friday at 1.0850 and opens Monday at 1.0875. Current price is 1.0860. Calculate the NWOG levels.
Solution:Gap High = 1.0875 (Monday open) Gap Low = 1.0850 (Friday close) Gap Size = 1.0875 - 1.0850 = 0.0025 (25 pips) Midpoint (CE) = (1.0875 + 1.0850) / 2 = 1.08625 Upper Quarter = 1.0875 - (0.0025 x 0.25) = 1.086875 Lower Quarter = 1.0850 + (0.0025 x 0.25) = 1.085625 Current price 1.0860 is in the lower half of the gap.
Result:Gap: 1.0850 - 1.0875 (25 pips) | CE: 1.08625 | Direction: Bullish | Price in Lower Half
Example 2: Bearish Daily Opening Gap (NDOG)
Problem:GBP/USD closes at 1.2700 and opens the next session at 1.2680. Current price is 1.2695. Calculate the NDOG levels.
Solution:Gap High = 1.2700 (previous close) Gap Low = 1.2680 (current open) Gap Size = 1.2700 - 1.2680 = 0.0020 (20 pips) Midpoint (CE) = (1.2700 + 1.2680) / 2 = 1.2690 Current price 1.2695 is in the upper half, above CE. Bias: bearish gap suggests looking for shorts at upper quarter or gap high.
Result:Gap: 1.2680 - 1.2700 (20 pips) | CE: 1.2690 | Direction: Bearish | Price in Upper Half
Frequently Asked Questions
What is the New Week Opening Gap (NWOG) in ICT trading?
The New Week Opening Gap (NWOG) is the price gap that forms between Friday's closing price and Sunday/Monday's opening price in the forex market. In ICT methodology developed by Michael J. Huddleston, this gap serves as a significant institutional reference point because it represents where smart money positions were established during the weekend when retail traders cannot participate. The NWOG acts as a magnet for price throughout the trading week, with the midpoint (consequent encroachment) being particularly important. Price tends to revisit and respect these levels, making them valuable for trade entries, exits, and bias determination.
What is the New Day Opening Gap (NDOG) and how is it different from NWOG?
The New Day Opening Gap (NDOG) is the gap between the previous daily session close and the current daily session open. While the concept is similar to NWOG, NDOG forms on a daily basis and represents shorter-term institutional positioning. In forex, the daily gap often appears at the New York session close (5 PM EST) to the next session open. NDOG levels are typically used for intraday trading decisions, while NWOG levels carry more weight for swing trading and weekly bias. Both gaps use the same calculation methodology, with the midpoint, high, and low serving as key reference levels for trade setups.
Why is the midpoint of the opening gap so important in ICT analysis?
The midpoint of the opening gap, also known as the consequent encroachment (CE) level, is considered the equilibrium price within the gap range. ICT theory posits that institutional algorithms are programmed to deliver price to the 50% level of inefficiencies, including opening gaps. When price trades to this midpoint, it represents fair value within the gap and often triggers significant reactions. Traders watch for price to reach the CE level and then reverse, providing high-probability entry opportunities. If price breaks through the CE decisively, it signals that the gap may be fully filled, changing the directional bias for the session or week.
Can NWOG and NDOG levels be used together for trade confirmation?
Yes, combining NWOG and NDOG levels provides powerful confluence for trade setups. When an NDOG level aligns closely with an NWOG level, the combined zone becomes a high-probability reaction area. For example, if the weekly gap midpoint sits near the daily gap high, that price level carries double significance for institutional algorithms. Traders can use the weekly gap for directional bias and the daily gap for precise entry timing. A common approach is to identify the weekly bias from NWOG, then wait for an NDOG setup that aligns with that bias during the killzone sessions for optimal trade execution and risk management.
What timeframes work best for identifying and trading opening gaps?
For NWOG analysis, the weekly chart provides the clearest view of the gap between Friday close and Monday open, but the 15-minute and 1-hour charts are used for precise level identification and entry timing. For NDOG, the daily chart shows the gap, while the 5-minute and 15-minute charts are optimal for entries near gap levels. ICT practitioners typically mark the gap levels on the higher timeframe, then drop to lower timeframes during killzone sessions (London open 2-5 AM EST, New York open 7-10 AM EST) to find entry patterns. The 15-minute chart is considered the sweet spot for balancing precision with noise reduction in gap trading.
How do opening gaps relate to other ICT concepts like fair value gaps and order blocks?
Opening gaps are one component in the broader ICT framework that includes fair value gaps (FVGs), order blocks, breaker blocks, and liquidity levels. When an NWOG or NDOG level overlaps with a fair value gap on the chart, the confluence creates an especially strong reaction zone. Order blocks formed within opening gaps carry additional institutional significance. The hierarchy typically places NWOG above NDOG in importance, and both above standard FVGs. Smart money uses opening gaps to accumulate or distribute positions, and the resulting order blocks within these gaps represent the highest-probability areas for institutional order flow and subsequent price reactions.
What happens when price completely fills an opening gap?
When price completely fills an opening gap by trading through the entire range from high to low (or vice versa), it signals that the institutional positioning represented by the gap has been absorbed. A fully filled gap often indicates a change in the short-term directional bias, as the original imbalance has been resolved. After a complete fill, the opposite side of the gap becomes a key level for potential support or resistance. For weekly gaps, a full fill during the same week is relatively rare and typically signals strong momentum in the filling direction. Traders should reassess their bias after a complete gap fill and look for new structural references.
How accurate are NWOG and NDOG levels for predicting price movements?
NWOG and NDOG levels are reference points rather than guaranteed prediction tools. Their accuracy depends on multiple factors including overall market conditions, news events, and alignment with higher timeframe structure. In trending markets, opening gaps in the direction of the trend tend to hold and act as support or resistance more reliably. During ranging or news-driven markets, gaps may be quickly filled and offer less reliable trading signals. Statistical analysis by ICT traders suggests that the gap midpoint is tested approximately 60-70% of the time within the relevant period, but this varies by market pair and volatility conditions.
What are common mistakes traders make when using NWOG and NDOG analysis?
The most common mistake is treating opening gap levels as absolute support and resistance without considering the broader market context and higher timeframe structure. Traders often enter immediately at gap levels without waiting for confirmation through price action patterns like market structure shifts or displacement candles. Another frequent error is using incorrect closing and opening prices, especially across different broker feeds that may have varying session times. Over-reliance on gap levels during high-impact news events is also problematic, as these events can override technical levels entirely. Successful gap traders always combine NWOG and NDOG analysis with killzone timing, liquidity concepts, and proper risk management.
References
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer · Editorial policy
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