Sorry, I don't see this in the manual: Where does Zorro start its bars? I.e., when is 0 day, 0 hour, 0 minute?

Let's say I start a Trade run Tuesday 15:27 UTC and the strategy specifies BarPeriod = 19 (to purposely pick a number not regular vs. hours). For simplicity, say no Lookback. Is 0/0/0 Tuesday 15:27 UTC? Tuesday 00:00? Sunday sometime? Other?

Also, is Tuesday 15:27 UTC a part of the 1st bar that Zorro will use to trade? Or is it part of the last history bar that Zorro does not use to trade?

Thanks.

The manual says the bars start at midnight UTC, but a 19 minutes barperiod starts probably at very irregular times.

Thanks Spirit.

I looked again (searched for "midnight" ) and think I found what you're referring to - BarOffset?

It says daily bars normally start at UTC midnight - i.e., on a day boundary. Is the 1st bar used for trading the bar that contains Zorro's startup or the next day?

It says 60 minute bars normally start on hour boundaries. Is the 1st bar used for trading the bar that contains Zorro's startup or the next hour?

Following this logic, 19 minute bars would normally start on a 19 minute boundary. But where are those boundaries? When does the 19 minute cycle start?

Thanks!

There is no fixed boundary for 19 minute bars, so they can start anytime, dependent on the current time and the previous lookback period. Only bars with regular length, such as 1 hour or 1 day, are guaranteed to start at fixed boundaries.

Thanks jcl. But "they can start anytime" doesn't really help. The questions are, "when does Zorro start them?" and "when is the 1st bar used for trading?".

Using the 19 minute and Zorro startup at Tuesday 15:27 UTC example, is Tuesday 15:27 UTC a bar boundary? Is Tuesday 15:27 UTC minus Lookback a bar boundary? Does Zorro start trading with the bar containing Tuesday 15:27 UTC or with the following bar?

Thanks.

It starts trading with the following bar. It never starts inside a bar.

Thanks jcl.

Do you know the answer to the other question? What is the exact bar start/alignment/boundary?

Thanks.

I don't know for sure, but will ask. I assume the start is the first midnight in the lookback period, as that would be logical for aligning bars to day/hour boundaries.