Direct answer: what “high and low of the day” means
In forex charting, “high of the day” is the highest price reached during the selected trading-day window, and “low of the day” is the lowest price reached during that same window. The word “price” depends on the data your chart uses (typically bid/ask midpoint or the platform’s candle series), and the “day” depends on the chart’s time zone and session definition.
To find them on a chart, you usually look at the candles for that specific day and pick the maximum high and minimum low values shown by the platform.
Explanation: how it works (inputs and mechanics)
A practical way to locate daily extremes is to use candles that correspond to the timeframe you’re analyzing:
- Choose the instrument and chart time zone
- Make sure the forex pair (for example, EUR/USD) is the one you intend to measure.
- Set the chart time zone (or confirm the default). A different time zone changes which candles fall into “today.”
- Define the “day” window A “day” can mean:
- A calendar day in your chart time zone, or
- A broker-defined trading session window. Without a consistent day definition, the same instrument can produce different daily highs and lows.
- Identify the daily maximum and minimum
- On a daily candle chart, the candle’s “High” and “Low” represent the day’s extremes for that platform and day definition.
- On an intraday chart (for example 15-minute or 1-hour candles), the daily high is the highest “High” among the day’s candles, and the daily low is the lowest “Low” among them.
- Confirm price basis Forex quotes involve spread (bid and ask). Platforms typically plot a single candle series, but different platforms may derive candles differently. That’s one reason two charts can show slightly different highs and lows even with the same time zone.
Example checks: make the result comparable
Use these independent checks to ensure you are measuring the same thing:
- Same pair, same timeframe: compare two charts using the same symbol and candle timeframe (daily vs intraday) so the “high” and “low” you read are produced the same way.
- Same day definition: verify your chart’s time zone/session setting. If one chart switches at 00:00 and another at a different offset, their “high/low of the day” can differ.
- Same session completeness: if you observe part of a day, you are only seeing highs/lows up to that moment. The final daily high/low can only be confirmed after the day window ends.
If you want a quick workflow: pick the daily candle view for the target date and read the candle’s High and Low. If you need more detail, switch to an intraday view and cross-check that the intraday highs and lows align with the daily candle extremes.
Limitations and risks (important uncertainty)
- No real-time guarantee: any “current” high/low depends on data up to the latest completed candle and your platform’s update timing.
- Time zone dependence: daily extremes shift when the day window shifts, so “high/low of the day” is not a single universal value without a defined time zone.
- Platform/data differences: different brokers or feeds can display candles differently (for example, price basis and spread handling), leading to small discrepancies.
- Partial-day interpretation: during the day, today’s high/low is provisional; it may change as new candles print.
For day-trading measurements, the most reliable approach is to state your assumptions (pair, time zone/session, and timeframe) and then verify the high and low within that exact definition.