Cal. Gov. Code § 75025.1
A judge whose service is discontinued by the expiration of his term of office and who is otherwise eligible to retire under this chapter may file the notice of retirement provided for in Section 75025 or an election to retire under Section 75033.5 within 90 days after such termination, which notice or election shall be effective as though filed at the close of his term. A judge whose service is discontinued by other than the expiration of his term of office and who is otherwise eligible to retire under this chapter must file the notice of retirement provided for in Section 75025 or an election to retire under Section 75033.5 prior to the effective date of his retirement, and the effective date of his retirement cannot be earlier than the date when the notice of retirement is filed with the Judges' Retirement System.
Ca. Gov. Code § 75025.1