Here's a place to create your countdown clock.
»www.timeanddate.com/coun ··· n/create
To the OP, anywhere from 2 to 4 months, up to 6 has been reported in the past. It depends on too many factors to state definitively.
You may get a good estimate if you talk to techs installing the lines. They would have a better idea of the size of the CO area, whether some parts would go live before other parts are installed, and so on.