how many minutes is the nse equity trading session

Three hundred and seventy-five. The normal equity session on NSE and BSE runs from 9.15 a.m. to 3.30 p.m., which is six hours and fifteen minutes of continuous trading. That single number decides which intraday bar sizes fit the day exactly, because 375 factorises as 3 × 5 × 5 × 5 and nothing else divides it cleanly.

a 60-minute chart of the indian equity session contains

Six full hourly candles and one fifteen-minute stub, because 375 divided by 60 is 6.25. Where that short bar falls — at the start of the day, at the end, or split between both — is a platform convention rather than an exchange rule, which is why the same stock can carry candles labelled 10.00 on one screen and 10.15 on another.

candle anchoring meaning

Candle anchoring is the choice of where a chart begins cutting the session into bars. Because 375 minutes does not divide by 30 or 60, a platform has to anchor somewhere — usually at the 9.15 open or on the clock hour — and every open, high, low and close on the resulting chart follows from that choice. Nothing on the chart announces which anchor is in use, so it is worth checking in the platform settings before writing a rule around candle closes.

why do hourly candles start at 9.15 on one app and 10.00 on another

Because the session does not divide into whole hours, so each platform picks its own anchor and both are internally consistent. An app anchored to the market open runs 9.15–10.15, 10.15–11.15 and leaves a fifteen-minute stub at the close; an app anchored to the clock prints a forty-five-minute first bar and then 10.00–11.00, 11.00–12.00. One written rule about “hourly close above the level” therefore becomes two different rules.

which intraday timeframes divide the 375-minute session without a stub

1, 3, 5, 15, 25 and 75 minutes — and in principle 125 and 375, which nobody charts. These are the divisors of 375, so a chart built on them holds a whole number of equal bars from 9.15 to 3.30 with nothing left over. The widely used 10, 30 and 60-minute charts each leave a short stub bar that your rules will read as though it were a full one.

Why hourly candles differ by platform

The rule is written down and it is not complicated: on the hourly chart, buy when a candle closes above the previous day’s high. On Thursday you take the trade at 11.15 and it works out reasonably. On Friday your friend says he never got the signal — he watched the same stock all day on the same rule and his chart never printed an hourly close above the level. You compare screens over the weekend. His candles are labelled 10.00, 11.00, 12.00. Yours are labelled 10.15, 11.15, 12.15. Every candle on the two charts covers a different stretch of the day, so every open, high, low and close on them is a different number, and one written rule has quietly become two.

An earlier lesson in this track listed candle anchoring among the reasons two apps show you different charts. This lesson is the arithmetic underneath it, because it is not a quirk of one platform. The Indian equity Trading session has a length that most of the common bar sizes do not divide into, and once that is true, every platform has to make a choice, and there is no choice that is obviously right.

Think of it like this

The plank and the shelf

A carpenter has a plank seven and a half feet long and is asked for shelves a foot wide. He can cut seven full shelves and leave a half-foot offcut at one end, or start half a foot in and leave the offcut at the other, or split the remainder between both ends. Every one of those is a competent job. Ask two carpenters and you get two sets of shelves from the same plank, and only the length of the plank was ever fixed.

In the market

The session is the plank. The bar size is the shelf. The exchange fixed the plank at 375 minutes and fixed nothing else, so where the cuts fall is the platform’s decision — and the offcut, the short bar at one end, is a real candle that your rules will read as though it were a full one.

The number the whole lesson turns on

The equity session runs from 9.15 in the morning to 3.30 in the afternoon. That is 375 minutes, and 375 is three times five times five times five. Which means the bar sizes anybody actually charts on that cut it into equal pieces with nothing left over are exactly these, and no others. (125 and 375 divide it too, and nobody draws a chart with three candles on it.)

Bar size	Bars in a session	Does it divide the session?
1 minute	375	Yes
3 minutes	125	Yes
5 minutes	75	Yes
15 minutes	25	Yes
25 minutes	15	Yes, and almost nobody uses it
75 minutes	5	Yes, and almost nobody uses it
10 minutes	37.5	No — a five-minute stub at one end
30 minutes	12.5	No — a fifteen-minute stub at one end
60 minutes	6.25	No — a fifteen-minute stub at one end
2 hours	3.125	No — three full bars and a fifteen-minute stub, as with thirty and sixty

Nothing here is a property of the market. It is a property of the number 375, and it would be a different table for a segment that trades a different number of minutes.

Two honest ways to cut an hour

Candle anchoring is the convention that decides where a platform starts counting. There are two in common use, both defensible, and the difference between them is fifteen minutes applied to every boundary in the day.

The same Thursday, two hourly charts

Anchored to the session — bars start at 9.15

9.15 – 10.15, a full sixty minutes
10.15 – 11.15, 11.15 – 12.15, 12.15 – 13.15
13.15 – 14.15, 14.15 – 15.15
And then 15.15 – 15.30: a fifteen-minute stub at the close
Seven candles. The first six are hours; the last is a quarter of one

Anchored to the clock — bars break on the hour

9.15 – 10.00, a forty-five-minute stub at the open
10.00 – 11.00, 11.00 – 12.00, 12.00 – 13.00
13.00 – 14.00, 14.00 – 15.00
And then 15.00 – 15.30: a thirty-minute stub at the close
Seven candles again, with a stub at both ends instead of one

What that does to a rule that names a bar

Worked example

One level, one stock, two charts

A share whose previous-day high is ₹612.40, on the two hourly charts above

What the stock actually didA single push above the level in the late morning that did not hold for longRose to ₹614.20 by about 11.05, then eased back to ₹611.50 by 11.20

The clock-anchored chart’s 10.00 – 11.00 candleThe push had not happened yet at 11.00. No signalClosed at ₹611.90

The clock-anchored chart’s 11.00 – 12.00 candleThe whole excursion above the level happened inside this candle and was given back inside it too. Still no signal, all dayClosed at ₹610.30

The session-anchored chart’s 10.15 – 11.15 candleThe candle happened to end while price was still above the level. Signal, at 11.15Closed at ₹613.10

What separated the two outcomesNeither chart is wrong and neither trader misread anything. The move was identical on both screensWhere the boundary fell, not what the market did

And the last bar of the dayBoth are labelled and treated as hourly candles by every indicator, every screener and every close-based rule that reads themA fifteen-minute candle on one chart, a thirty-minute candle on the other

The rule said “an hourly close above the previous day’s high” and both traders followed it exactly. What the rule did not say — and what neither of them had ever thought to write down — was where an hour starts. A Timeframe is not one setting, it is two: the length of the bar and the point the counting is anchored to. Leave the second one unstated and the rule is not reproducible, not by a friend, not by a backtest, and not by you next year on a new platform.

Loading interactive demo…

The same series drawn at different resolutions. What the lab cannot show you, and what this lesson is about, is that at some resolutions the last bar of the day is not the same length as the others.

Where the stub bar quietly matters

The last signal of the day comes off a short bar. On a session-anchored hourly chart the closing candle is fifteen minutes long. It has a smaller range and less volume than every other candle on the screen, purely because it had a quarter of the time — so a close-based crossover, a breakout confirmation or a doji reading taken from it is being taken from a bar built differently from the ones the rule was tested on.
The [[Opening range]] is defined by the anchor, not by the market. “The first hour’s high” is the high to 10.15 on one chart and to 10.00 on the other. Imported material that says the first hour was written for a session with a different length, and translating it to India means choosing one of these and saying which.
Bar-count lookbacks change meaning. A twenty-bar Donchian channel on a thirty-minute chart is 600 minutes of trading, which is one and three-fifths of a session — so on a chart with a stub bar the window straddles session boundaries at a slightly different point every day.
Screener results depend on it. A scan for “stocks whose hourly candle closed above the twenty-hour average” run on two data vendors will return two overlapping but different lists, every day, with no error anywhere.
Alerts fire at different times. Which matters most to the person who cannot watch the screen and has set the alert precisely because of that.

What to do about it, once

1
Read the timestamps on your own hourly chart
Not the shape — the labels. Bars starting 9.15, 10.15, 11.15 are session-anchored. A short first bar to 10.00 followed by clean clock hours is clock-anchored. This takes ten seconds and most people have never done it.
2
Prefer a bar size that divides the session
Five, fifteen and twenty-five minutes cut 375 exactly, and so does seventy-five. On those, the anchoring question does not arise at all, because there is only one way to cut the plank. If your method genuinely needs hours, that is fine — it just means the anchor is now part of the method.
3
Write the anchor into the rule, in the same line as the bar size
“Hourly, anchored to the session open” is a rule. “Hourly” is a preference. The distinction only shows up when somebody else — or a backtest, or a new platform — has to reproduce what you did.
4
Decide what the stub bar is allowed to do
Either exclude the short closing candle from close-based signals, or include it deliberately and know that it is a quarter-length observation. Both are defensible. Silently including it is what produces the end-of-day signal nobody can explain the next morning.
5
Check the anchor again after you change platform
It is not a setting most people migrate, because most people do not know it exists. A strategy that stops working the month you switched apps is worth testing against this before it is retired.

Check yourself

Why do so many Indian intraday traders end up on the five-minute and fifteen-minute charts rather than on ten-minute or hourly ones?

Simple bhasha mein

Thaan 375 ka hai, parda 60 ka

Darzi ke paas 375 centimetre ka thaan hai aur aapko 60-60 centimetre ke parde chahiye. Chhe parde ban jaate hain, yaani 360, aur 15 centimetre bach jaata hai. Ab woh 15 shuru mein chhode ya aakhir mein — dono kaam theek hain, aur do darzi do alag set banayenge. Session bhi wahi 375 minute ka thaan hai, 9.15 se 3.30. Isiliye 5, 15, 25 aur 75 minute ke chart poore-poore kat jaate hain (15 waale mein theek 25 candle, ghanti se ghanti tak), aur ghante waale mein nahi kat te. Ek app bacha hua 15 minute aakhir mein rakhta hai — candle 9.15, 10.15, 11.15 — doosra shuruaat mein, yaani pehli candle 9.15 se 10.00 ki chhoti si, phir 10.00, 11.00. Dono chart pe saat candle hain aur sirf do kinare same hain: 9.15 aur 3.30; beech ki ek bhi candle common nahi. Isiliye aapka rule 11.15 pe laga aur dost ka poore din nahi laga. Rule mein bar ki lambai likhi thi, anchor likha hi nahi tha.

What to remember

The equity session is 375 minutes, and only 1, 3, 5, 15, 25 and 75-minute bars divide it exactly.
Any other bar size leaves a stub candle, and the platform decides which end of the day it sits at.
Two hourly charts of the same session — one anchored to 9.15, one to the clock — share only their first and last boundary.
A timeframe is two decisions: the length of the bar and the anchor. A rule that states only the first is not reproducible.
The closing candle on a session-anchored hourly chart is a quarter-length bar that every close-based rule reads as a full one.

You reached the endMark it done and keep your streak going.

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Common questions

Short, direct answers to what people ask about this topic.

how many minutes is the nse equity trading session: Three hundred and seventy-five. The normal equity session on NSE and BSE runs from 9.15 a.m. to 3.30 p.m., which is six hours and fifteen minutes of continuous trading. That single number decides which intraday bar sizes fit the day exactly, because 375 factorises as 3 × 5 × 5 × 5 and nothing else divides it cleanly.
a 60-minute chart of the indian equity session contains: Six full hourly candles and one fifteen-minute stub, because 375 divided by 60 is 6.25. Where that short bar falls — at the start of the day, at the end, or split between both — is a platform convention rather than an exchange rule, which is why the same stock can carry candles labelled 10.00 on one screen and 10.15 on another.
candle anchoring meaning: Candle anchoring is the choice of where a chart begins cutting the session into bars. Because 375 minutes does not divide by 30 or 60, a platform has to anchor somewhere — usually at the 9.15 open or on the clock hour — and every open, high, low and close on the resulting chart follows from that choice. Nothing on the chart announces which anchor is in use, so it is worth checking in the platform settings before writing a rule around candle closes.
why do hourly candles start at 9.15 on one app and 10.00 on another: Because the session does not divide into whole hours, so each platform picks its own anchor and both are internally consistent. An app anchored to the market open runs 9.15–10.15, 10.15–11.15 and leaves a fifteen-minute stub at the close; an app anchored to the clock prints a forty-five-minute first bar and then 10.00–11.00, 11.00–12.00. One written rule about “hourly close above the level” therefore becomes two different rules.
which intraday timeframes divide the 375-minute session without a stub: 1, 3, 5, 15, 25 and 75 minutes — and in principle 125 and 375, which nobody charts. These are the divisors of 375, so a chart built on them holds a whole number of equal bars from 9.15 to 3.30 with nothing left over. The widely used 10, 30 and 60-minute charts each leave a short stub bar that your rules will read as though it were a full one.