If you haven't done so already, it's time to reprogram your cell phone and/or speed dialer to include the 518 area code.
Mandatory 10-digit dialing takes effect Saturday throughout the 518 area code, New York state's largest, covering more than a dozen counties from the eastern Mohawk Valley to the Vermont border- and from the Canadian border to south of Albany.
Remember: You don't need to dial "1" before the number!
518 will be joined in September by 838. The two will cover the same geographic footprint.