What time exactly will mining start?
There is no steal exactly information about it ...
Just check
https://btcgpu.org/On their github it says
Bitcoin Gold (codename BTCGPU) is a fork of the Bitcoin blockchain that will occur at block height 491407, at roughly 12:00:00 UTC October 25, 2017.
Is it already mine able ?. if yes can anyone please give me a pool address i will try to mine some coin with my rig