DiaPharma’s regular business hours:

  • Monday through Thursday, 8am to 5pm Eastern Time (ET) with limited phone support available until 8pm ET
  • Friday, 8am to 1pm ET with limited phone support available until 4 pm ET

DiaPharma’s “summer hours”:

  • Monday through Thursday, 8am to 5pm EDT with limited phone support available until 8pm
  • Friday, off, May 29th, all June-July-and-August, September 4th

Holiday Schedule