“Pi Day” Community Restaurant Event With Potomac Pizza Posted on March 9, 2016 by Greer Bautz Join us on Monday, March 14 for “Pi Day” with Potomac Pizza in Potomac Village . 20 % of all proceeds, take out and dine in, between 4 p.m. and 9 p.m. will benefit Bells Mill. See Community Restaurant Pi Night with Potomac Pizza for more details.