Hi M,
That time difference can be fixed by adjusting your computer clock by one minute or so.

Time remaining is usually compared to ones computer clock.
So adjust accordingly.

Another way to see if either 2 or 3 placings are going to be paid, is to look at the market percentage at the top.
If its showing 200%+ means only 2 placings
300%+ means 3 placing being paid.

And in some very large races like they have in the UK 400% for 4 placings

Cheers.

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Cheers.