How often does IsFirstBarofSession occur during a trading day?

[timmbbo]

Hi there, can IsFirstBarofSession be true more than once, during a single trading day?

If the reference code, I see snippets such as:

if (Bars.IsFirstBarOfSession && IsFirstTickOfBar) {
lastThreeTrades = 0;
priorSessionTrades = SystemPerformance.AllTrades.Count;
}

However, on some markets, it seems like the IsFirstBarofSession can be true for the first 1-3 hours after the market re-opens. Therefore, this piece of code which should only run once, at the very start of the trading session, can get executed multiple times.

Your thoughts? Thanks,

[NinjaTrader_Jesse]

Hello timmbbo,

If an instrument has multiple sessions within the same day then it could become true more that once, for instruments that have a single session it would only be true on the first bar of the session. This property is only true on the bar marked as the first bar of the session.