Celebrated annually on October 23 from 6:02 a.m. to 6:02 p.m., Mole Day commemorates Avogadro’s Number (6.02 x 10 23 ), which is a basic measuring unit in chemistry. Join Diane Wright as we explore the ways, and the reasons, we measure and understand our world. Service Leader: Patty Klingenberg. Children’s RE: Classes 9:30 – 10:15 a.m., then they will join their families for the intergenerational service.