How does annual or other types of leave affect the rest and recuperation cycle?

Rest and recuperation must be taken within one month following the completion of the period of uninterrupted qualifying service. The period of qualifying service starts counting from your date of arrival at the duty station, or from the date of return from last rest and recuperation, or from the date of return from any leave that has interrupted the qualifying service. Any absence of more than three working days—on annual leave, sick leave, family leave, family visit travel, home leave, or official business travel combined with annual leave/special leave—interrupts the period of service.