Is this time available in the chart?

[oozgal]

For example, in broker X, the Dow Jones chart starts at 2 am, But in broker Y the Dow Jones chart starts at 1am,

So we don't have 1am in Dow Jones chart's broker X.

How do I check that 1am is on the chart?

Edit1:

for example:

      if(D'2021.11.05 01:00:00')
        {
         Comment("1am exist on my chart!");
        }
      else
        {
         Comment("1am NOT exist on my chart!");
        }

[Sergey Golubev]

The charts, the price on the charts, the symbols to trade, and the names of the symbols, and the time of the price on the chart - all of them are related to the brokers only.
And it is related to the server of the broker (server time).

[oozgal]

Sergey Golubev #:
The charts, the price on the charts, the symbols to trade, and the names of the symbols, and the time of the price on the chart - all of them are related to the brokers only.
And it is related to the server of the broker (server time).

I know, please pay attention to my questions, How do I check that 1am exist on the chart?