Timing is everything, especially when it comes to shipping holiday items. The Postal Service recommends the following mailing and shipping deadlines for expected delivery by Dec. 25 to Air/Army Post Office/Fleet Post Office/Diplomatic Post Office (APO/FPO/DPO) and certain domestic addresses*: · Dec. 9 — APO/FPO/ DPO (all ZIP Codes) Priority Mail and First-Class Mail · Dec. 16 — APO/FPO/ DPO (excep…