Module 2 · Lesson 2 of 8 · Charting · About 5 minutes
Symbols, Timeframes and Sessions on a Chart
On this page
Before you read: Charting Platforms and the Chart Layout: What Is on the Screen
What you will learn
- How a ticker symbol and an exchange prefix identify what is charted.
- How the timeframe sets what one bar represents.
- How session settings change bars and daily levels. Session filters change included observations and indicator windows; ordinary display timezone relabels instants without changing OHLC by itself.
How does a chart know what to show?
If two products share a similar name, how do you know which one is on screen?
Each instrument has a symbol, and platforms often add the exchange or data source to it. The same company or index can appear as a stock, an ETF, a futures contract, an option or a CFD from different sources, each with different prices and hours. ETFs such as SPY and QQQ track indexes but are not the indexes themselves. Futures may show a specific contract month or a continuous contract. Checking the full symbol and the description is the first step before reading anything.
What does the timeframe change?
Is a five-minute chart a different market from a daily chart?
A time bar groups included observations within declared boundaries. Combining aligned, complete, contiguous bars from the same unadjusted input set uses first open, highest high, lowest low, last close and summed volume. Twelve full five-minute bars cover 60 minutes when aligned to that complete hour; that count is conditional, not a promise for every clock/session boundary.
The underlying market need not differ when the summary changes. Indicator length is a bar count, not a fixed calendar span: a 20-bar average on five-minute inputs uses a different observation span from 20 daily bars. A shorter chart exposes finer fluctuations; calling them noise is an interpretation, not an inherent property of every small bar. Many platforms let you save favorite timeframes for quick switching.
Completed fictional four-bar record, all intervals CST, price units and contracts:
| Interval | O | H | L | C | V |
|---|---|---|---|---|---|
| 09:00–09:05 | 100 | 101 | 99 | 100.50 | 10 |
| 09:05–09:10 | 100.50 | 102 | 100 | 101.50 | 20 |
| 09:10–09:15 | 101.50 | 101.75 | 100.50 | 101 | 15 |
| 09:15–09:20 | 101 | 103 | 100.75 | 102 | 25 |
The combined 20-minute bar is O 100, H 103, L 99, C 102, V 70. You cannot average the closes to obtain the combined close; the last included trade supplies it.
A separately declared fictional session 09:00–10:10 has 70 minutes. If 60-minute bars align at 09:00 and end at that session boundary, the first is 60 minutes and the final is 10 minutes, not another full hour. Missing intervals, halts and differing sessions/adjustments require their own input rules; do not manufacture missing trades. The twelve-bar diagram below shows the complete aligned-hour case, not this truncated-session case.
Timeframe diagram
Illustrative diagram constructed for teaching. Not real market data.
The diagram shows twelve fictional five-minute candles, green hollow for up and red filled for down, and beside them the single one-hour candle they combine into, using the first open, the highest high, the lowest low and the last close. All values are made up.
Try it on a chart
- Use the interval menu in the top toolbar to switch between 1 minute, 5 minutes and 1 day.
- Notice how much time one bar covers at each setting.
Charts and quotes are TradingView's data, not ours, and may be delayed.
How do sessions and time zones matter?
Why might a daily bar end at 4 p.m. on one chart and 5 p.m. on another?
Session filters change included observations and indicator windows; ordinary display timezone relabels instants without changing OHLC by itself. Exchange/session aggregation rules and explicit timezone-dependent calculations are separate controls. Native TPO custom-session timezone behavior is one documented exception at the indicator-input level; Pine does not automatically read the ordinary chart display timezone. Record the symbol, feed, session, bar alignment and calculation timezone rather than assuming every timezone control rebuilds all candles.
What this does not tell you about symbols and timeframes
- Which timeframe anyone should use.
- Exact session hours for any product. Check the exchange or the platform’s symbol information.
- Whether a data feed is real time or delayed.
- Nothing here suggests any trade.
Watch the lesson explained
Check yourself
- Why check the full symbol and description before reading a chart? Hint: many versions of similar products.
- How are twelve five-minute candles combined into one hour candle? Hint: first open, highest high, lowest low, last close.
- Name two things that change when extended hours are included. Hint: highs, lows, indicators.
- Using the four-row record, what is the combined close/volume? Is the fictional final session bar 60 minutes long?
Reflect on your own process
- What does your checklist say to confirm about the symbol, exchange and description before you write any chart note?
- Which session and timeframe does your plan name for each instrument, and where did you record why?
- How would you note a truncated final bar or a missing interval in your journal so a later review is not misled?
Sources
- TradingView Symbol Search: tips for finding assets
- What are 1! and 2! continuous futures contracts?
- Concepts / Time (Pine Script User Manual)
- Time Price Opportunity charts explained
- Time intervals: how much market activity each candle shows
- SPY: State Street SPDR S&P 500 ETF Trust
- Invesco QQQ Trust, Series 1, Form 485BPOS (2025)