T plus 0 line in sensibull/opstra

Hi is the T plus zero line a 24 hour move payoff line or is it for the 6 hours intraday payoff??

Can you add any screenshot if possible?

Hi attached. Kindly look at the blue line in the chart denoting T plus 0 gains. Is it intraday 6 hours move based or is it for whole 24 hours till next day opens.

Can you take a proper screenshot of that page and post?