§ 843.503 Commencing and terminating dates

5 CFR 843.503(a)(a) An annuity under this subpart commences on the day after the retiree dies.

5 CFR 843.503(b)(b) An annuity under this subpart terminates on the last day of the month before the insurable interest beneficiary dies.

5 CFR 843.503(c)(c) A survivor annuity accrues on a daily basis, one-thirtieth of the monthly rate constituting the daily rate. An annuity does not accrue for the 31st day of any month, except in the initial month if the survivor's (of a deceased employee) annuity commences on the 31st day. For accrual purposes, the last day of a 28-day month constitutes 3 days and the last day of a 29-day month constitutes 2 days.