(1)总统就职日
当选总统与副总统的就职日，即1月20日。

(2)(州法定的)州长就职日

• letters ad colligendum bona defuncti
• letters avocatory
• letters close
• letters de cachet
• letter security
• letters of abolition
• letters of administration
• letters of administration C.T.A.
• letters of administration D.B.N.
• letters of administration D.B.N. C.T.A.
• letters of business
• letters of collection
• letter(s) of credence
• letters of fire and sword
• letters of guardianship
• letters of horning
• Letters of Intercommuning
• letters of marque
• letters of marque and reprisal
• letter(s) of recall
• letter(s) of recredentials
• letters of request
• letters of safe conduct
• letters of slains
• letters of slanes