Post Offices nationwide will be open Christmas Eve, Monday, Dec. 24, and New Year’s Eve, Monday, Dec. 31. The Gallatin Post Office will shorten retail lobby hours and close at noon on these dates. Regular mail delivery will be unaffected by the change. The revised retail lobby hours will be 8:30 a.m. to 12 p.m. Christmas Eve and New Year’s Eve. Blue collection boxes at Gallatin will be collected early.