DislikedYour own time zone does not enter the calculations. The pivot indicator takes into account the platform's time and the time you want to start the day.
To have exactly the same pivots as Cobra you should be using the same platform that he is using, because prices usually can differ even if by one pip and this will change the results.
However, Cobra uses GMT 00:00 as the start of the day, and I think that IBFX is at GMT (please someone who uses that platform confirm) so the settings would have to be 0,0 in your case IF effectively IBFX time is GMT....Ignored
yes IBFX is at 0 GMT