Strategies are always run at each candle close, so any trade AT MARKET is immediately open, which is the day following the setup bar.

There you are, like I said in my previous post:
<pre class=”lang:probuilder decode:true “>IF MyConditions AND Not OnMarket THEN
BUY AT MARKET
ENDIF
On a daily chart, If your conditions are true when the Monday bar closes, then a trade will be opened as soon as the Tuesday bar opens.

To open a trade on any bar your conditions must be true the previous bar.

You cannot open a trade on the same bar where conditions are true, simply because strategies are executed ALWAYS when a bar closes.

If you are using higher TF’s, you can mitigate the (micro) delay using Multiple Time Frames, a feature introduced a few months ago and still being beta tested on demo accounts only.

This will allow you to enter a trade on a smaller TF while checking conditions on a higher TF. But… no matter what, trades will be opened when a candle closes.

If your conditions are true on the DAILY chart you may use a 1-Minute TF to enter the trade the same day, even just 1 minute before the daily chart closes, but still when 1-minute chart closes not while it is being formed.

https://www.prorealcode.com/blog/learning/approach-multi-timeframe-trading-prorealtime/

https://www.prorealcode.com/documentation/timeframe-probacktest-proorder/

https://www.prorealcode.com/topic/betatesting-multitimeframe-support-automatic-trading/

When using Multiple Time Frames, the main TF (the default one, which is on the chart and from which the strategy is launched) MUST be the lowest TF, in this case 1-minute TF.

All other TF’s need to be multiple of this main TF.

You strategy can be launched from 1-minute or lower TF, say 10 seconds or 20 seconds, but NOT 7 seconds because 1-minute, which is 60 seconds, is not a multiple of 7 seconds!