Module 3 · Lesson 13 of 13 · Reading price · About 5 minutes
Futures Sessions and Timeframes: Nearly 24 Hours, Different Characters
On this page
Before you read: Futures Trading Hours, Settlement Prices and Price Limits
What you will learn
- How many futures trade nearly around the clock, with a daily maintenance break.
- How regular trading hours and electronic trading hours differ in activity.
- Why session choices change bars, indicators and reference levels.
When do futures trade?
Why can a stock index futures contract trade at 2 a.m.?
Many US futures trade electronically from Sunday evening to Friday afternoon, Central Time, with a short daily break. A product may assign an evening-opening session to the next trade date. That date convention is not itself the instant or calculation window of official settlement. Check the particular contract calendar/holiday schedule and reference definition; this lesson specifies no universal start, break or settlement time. Each product’s hours are listed in its contract specifications.
Session diagram
Illustrative diagram constructed for teaching. Not real market data.
The diagram shows a fictional trading day in Central Time from the evening open to the afternoon close, with a volume histogram that is low overnight and rises around the US stock open and close. A short maintenance break is marked. All values are made up.
Why do sessions behave differently?
Is an hour of overnight trade the same as an hour after the stock market opens?
Activity often clusters around the US stock open and close for equity index futures, around key reports for rates and energy, and around European and Asian sessions for currencies. Overnight volume is often thinner, so spreads can be wider and moves can be larger relative to volume. These are general tendencies, not rules.
How do session choices change a chart?
Why might two charts of the same contract show different highs?
Session inclusion changes the input record. In a completed fictional teaching record, an overnight bucket has O100, H105, L98, C101, V40 contracts; the later regular bucket has O101, H104, L99, C103, V60. Including both yields O100, H105, L98, C103, V100; regular-only yields O101, H104, L99, C103, V60. Therefore opening price, extrema and volume can differ; the close happens to match here. These are invented buckets, not a real venue’s hours or actual contract data.
Changing only the ordinary chart-display timezone relabels the same instants; it does not by itself add the omitted bucket or alter these OHLC numbers. Different session windows/bar alignment can change inputs. A documented native TradingView TPO custom-session feature interprets session inputs in chart timezone; that is a specifically timezone-dependent indicator, not evidence that every ordinary candle or Pine calculation follows display timezone. Record exactly which control changed. Profile/VWAP differences need inclusion/reset settings, not a generic “timezone changed prices” explanation.
What this does not tell you about sessions
- Exact hours for any product. Check the exchange.
- Whether any session is better for anyone.
- How volume will behave on a given day.
- Nothing here suggests any trade.
Check yourself
- Why might a product’s Tuesday-labeled session begin on the preceding evening, and is that opening the settlement instant?
- Name two ways the session setting changes an indicator. Hint: VWAP, profiles.
- Why can overnight moves be larger relative to volume? Hint: thinner books.
- What are the two fictional buckets’ combined OHLCV? Would changing only clock-label timezone include the omitted overnight trades?
Reflect on your own process
- Where in your notes do you record the exact session hours and holiday schedule for each contract you chart?
- Does your chart checklist say which session your VWAP and profiles include, and how you would confirm it?
- When two charts of the same contract disagree, which setting would your written process check first?