The U.S. Postal Service has announced its holiday shipping deadlines for delivery by Dec. 25 to Air/Army Post Office/Fleet Post Office/Diplomatic Post Office and domestic addresses:

• Dec. 9 — APO/FPO/DPO (ZIP code 093 only) priority mail and first-class mail.

• Dec. 11 — APO/FPO/DPO (all other ZIP codes) priority mail and first-class mail services.

• Dec. 14 — regular ground service.

• Dec. 18 — APO/FPO/DPO (except ZIP code 093) priority mail express service.

• Dec. 20 — first-class mail service (including greeting cards).

• Dec. 20 — first-class packages (up to 15.99 ounces).

• Dec. 21 — priority mail service.

• Dec. 23 — priority mail express service.

The post office’s busiest time is the two weeks before the Christmas holiday itself.