Ghost2266 -- You are getting your "years" mixed up. The Fiscal Year really doesn't matter when requesting leave. Not that you asked, but...
-- Calendar Year runs from 01 JAN xx to 31 DEC xx
-- Fiscal Year runs from 01 OCT xx to 30 SEP xx the following year.
-- Leave Year runs from the first day of the first complete pay period in a calendar year ( JAN ) and ends on the day before the first day of the first complete pay period of the following year.
-- Guarantee Year runs from the first day following the last complete pay period in October and ends on the last day of the last complete pay period of October of the following year.
-- As "gotstamps" noted, there is no official time limit on submitting leave requests. Thus offices will try to make up their own limitations. It goes along with post offices doing things in their own manner.
-- If need be, start submitting leave request for your desired dates EVERY DAY from now on. Hopefully manglement will decide to grant your leave or plan on purchasing additional 3971's!! If manglement complains about the cost, cite Section 142.3 of the PO-603 -- Equipment and Supplies. The USPS SUPPLIES ALL additional necessary equipment, supplies, and FORMS. If manglement still not cooperating, file a grievance for not supplying necessary forms!
-- Per "Rt2mailman" - grieve every denied leave request.
-- If manglement does not see the light, bring in your Assistant District Representative so manglement can explain to the ADR why leave is being denied.