IsFirstBarofSession

Desktop SDK - Indicators
1

If load 3 days of worth of bars on my chart. I have bars from: 18th May 18:01 until now(21st May 07:54). If I run the following code (with added 1 minute data series):

		    if (
			(Bars.IsFirstBarOfSession)
			&& (BarsInProgress == 1)
			)
	    {
			Print("Is first bar of session");

How come it only Prints twice and does not count the first bar on the chart as the first bar of tha session? Output:

Is first bar of session, Time = 19/05/2025 18:01:00
Is first bar of session, Time = 20/05/2025 18:01:00
2

If I’m not mistaken, it IS counting this as the first bar, which is the ETH trading hour start time. 18:00. The bar closes on 18:01 which is why it’s providing that as the output. It’s not printing out for May 21 because the range is only until 07:54, and doesn’t get to 18:00.

3 
Is first bar of session, Time = 19/05/2025 18:01:00 = Session 20th May
Is first bar of session, Time = 20/05/2025 18:01:00 = Session 21st May

The session for the 19th may which starts @ 18:00 on the 18th may is missing. Despite the first bar for this session being the first bar on my chart.

4

Do you have any code that would prevent using that very first bar? Like if CurrentBars < 1 → return;

5

Days loaded in NT is Not Trading Days.
It’s Physical Days (Including Sat/Sun)

If starting on a Wed, and load 3 days,
NT will load Wed/Tues/Mon not Sunday.

To get session start of Mon. (Sun Eve)
Might also need to include Fri as well.

On Sun, if want previous weeks values.
I suggest loading a minimum of 8 days.

Try increasing your Days Back loaded.
I usually add additional 3 days jic.

Be Safe in this Crazy World!
:smiling_face_with_sunglasses: