Passport Appointment Hours. Monday-Friday. Application form DS-11: This form should be filled out but not signed until you submit it at the post office.Get Your US Passport in 3 Days. Go to our Online Passport Appointment System. Primary Application Forms for a US Passport 1. Application For A US Passport (DS-11) 2. Santa Clara County Clerk Recorder's Office. The Post Office in Campbell off Hamilton puts out a "Walk Ins" sign up sheet at 6am, and will see the first 5 people on the list between 8-9am. Meridian post office in Willow Glen allows walk ins on Tuesdays and Wednesdays from 10-12. Both parents must be present with child.