24.00 is more troublesome in an NTSC world of 29.97. The difference between 24 and 23.976 is the same as 30 and 29.97 (FPS x (1000/1001))
That is why the rate is 23.976 – it also allows for continuous 2>3 cadence when going out to 29.97 formats.
In PAL based countries, it will be 24.00 and 25.00 as they don’t have the fractional frame rates as NTSC based countries.
Stay 23.976…
Michael