According to
http://pool.gold/BTG official network is expected to start on Nov 12 2017, 7 PM UTC. The current mining ports and accounts will be automatically transferred from testnet to main net mining.
My Start time in the US 2 pm EST.......
Thanks for info! Should check pools from the 11th November evening. But previous year situation with ZEC start could be repeated when the best choise was to mine Equihash on Nicehash due to most of then Equihash pools had detained withdrawals