Are you suppose to hang your flag half way on the poles on veteran's day?

No not on veteran's day

Customary Dates to fly half-Staff:

• Peace Officers Memorial Day, May 15th (sunrise to sunset)
• Memorial Day, last Monday in May (sunrise to noon)
• Patriot Day, September 11th (sunrise to sunset)
• Pearl Harbor Remembrance Day, December 7th (sunrise to sunset)