The New Year brings everyone new advanced annual leave. The annual leave can be used at the start of PP 2 2018, January 6, 2018 to PP 1-2019, January 4, 2019. Just remember if you plan to retire or separation happens. You will owe the USPS for annual that was used and not earned. If you separate or retire on a day that is not the last day of the pay period, you will not earn leave for the time beyond your last full pay period. (ELM 512.731 b).