Let’s debunk this concept before we go awol on it, okay? The terminology remains relevant, but the theory is something that can be improved upon. The actual logic behind the CBDR, central bank dealing range, is quite interesting. It is linked majority with expiry options and the distribution expiry.

“Asia range is from 19;00 -> 00;00 NY TZ”

We want to pay attention to that expiry range.

“The expiry range is the PM hours of NY so 14;00 -> 20;00 NY TZ”

In essence the goal is to just see if the PM hours are slow, low volume delivery that will be liquidity to be ran through the next day or not.

This is why we also mention that everything after that is our true day. We want this period to be slow,bland, and dead. We want these ranges to be in what we have called "dead time". If that's not the case then there is something else going on, implying that the next day market conditions won't be as high probability as we expect them to be.

So, in the first instance we have both the ranges marked for our convenience, using the time slots we mentioned above. Notice how the PM hours are considered to be the dead time on our charts. Then following that, there is also a one-hour window where both of these overlap. In conclusion, what it comes down to is a process of filtering.

Don’t focus too much on the aspect of pips and calculations. There are diÉerent sweet spots and preferences when it comes to how big you want this expiry range to be. 30-40 pips move on the expiry range would be ideal

In essence the takeaway is -> "Calm, low volume period" of CBDR and Asia range together. This, in combination with all other factors such as our DOL, daily bias and lower timeframe framework will give us a nice funnel/filter to work through grading high/low probability days. In preference where the stage is set, London to then form LOD/HOD and NY being an amplification of that.