Hi @Raja_Shekhar ,
As of now there is no method from where we can fetch expired options expiries dates.
however we can get dates from nse.
example.. weekly expiry list for Nifty from 2021 to 2026.
expiries = ["2021-01-07", "2021-01-14", "2021-01-21", "2021-01-28", "2021-02-04", "2021-02-11", "2021-02-18", "2021-02-25", "2021-03-04", "2021-03-10", "2021-03-18", "2021-03-25", "2021-04-01", "2021-04-08", "2021-04-15", "2021-04-22", "2021-04-29", "2021-05-06", "2021-05-12", "2021-05-20", "2021-05-27", "2021-06-03", "2021-06-10", "2021-06-17", "2021-06-24", "2021-07-01", "2021-07-08", "2021-07-15", "2021-07-22", "2021-07-29", "2021-08-05", "2021-08-12", "2021-08-18", "2021-08-26", "2021-09-02", "2021-09-09", "2021-09-16", "2021-09-23", "2021-09-30", "2021-10-07", "2021-10-14", "2021-10-21", "2021-10-28", "2021-11-03", "2021-11-11", "2021-11-18", "2021-11-25", "2021-12-02", "2021-12-09", "2021-12-16", "2021-12-23", "2021-12-30", "2022-01-06", "2022-01-13", "2022-01-20", "2022-01-27", "2022-02-03", "2022-02-10", "2022-02-17", "2022-02-24", "2022-03-03", "2022-03-10", "2022-03-17", "2022-03-24", "2022-03-31", "2022-04-07", "2022-04-13", "2022-04-21", "2022-04-28", "2022-05-05", "2022-05-12", "2022-05-19", "2022-05-26", "2022-06-02", "2022-06-09", "2022-06-16", "2022-06-23", "2022-06-30", "2022-07-07", "2022-07-14", "2022-07-21", "2022-07-28", "2022-08-04", "2022-08-11", "2022-08-18", "2022-08-25", "2022-09-01", "2022-09-08", "2022-09-15", "2022-09-22", "2022-09-29", "2022-10-06", "2022-10-13", "2022-10-20", "2022-10-27", "2022-11-03", "2022-11-10", "2022-11-17", "2022-11-24", "2022-12-01", "2022-12-08", "2022-12-15", "2022-12-22", "2022-12-29", "2023-01-05", "2023-01-12", "2023-01-19", "2023-01-25", "2023-02-02", "2023-02-09", "2023-02-16", "2023-02-23", "2023-03-02", "2023-03-09", "2023-03-16", "2023-03-23", "2023-03-29", "2023-03-30", "2023-04-06", "2023-04-13", "2023-04-20", "2023-04-27", "2023-05-04", "2023-05-11", "2023-05-18", "2023-05-25", "2023-06-01", "2023-06-08", "2023-06-15", "2023-06-22", "2023-06-28", "2023-06-29", "2023-07-06", "2023-07-13", "2023-07-20", "2023-07-27", "2023-08-03", "2023-08-10", "2023-08-17", "2023-08-24", "2023-08-31", "2023-09-07", "2023-09-14", "2023-09-21", "2023-09-28", "2023-10-05", "2023-10-12", "2023-10-19", "2023-10-26", "2023-11-02", "2023-11-09", "2023-11-16", "2023-11-23", "2023-11-30", "2023-12-07", "2023-12-14", "2023-12-21", "2023-12-28", "2024-01-04", "2024-01-11", "2024-01-18", "2024-01-25", "2024-02-01", "2024-02-08", "2024-02-15", "2024-02-22", "2024-02-29", "2024-03-07", "2024-03-14", "2024-03-21", "2024-03-28", "2024-04-04", "2024-04-10", "2024-04-18", "2024-04-25", "2024-05-02", "2024-05-09", "2024-05-16", "2024-05-23", "2024-05-30", "2024-06-06", "2024-06-13", "2024-06-20", "2024-06-27", "2024-07-04", "2024-07-11", "2024-07-18", "2024-07-25", "2024-08-01", "2024-08-08", "2024-08-14", "2024-08-22", "2024-08-29", "2024-09-05", "2024-09-12", "2024-09-19", "2024-09-26", "2024-10-03", "2024-10-10", "2024-10-17", "2024-10-24", "2024-10-31", "2024-11-07", "2024-11-14", "2024-11-21", "2024-11-28", "2024-12-05", "2024-12-12", "2024-12-19", "2024-12-26", "2025-01-02", "2025-01-09", "2025-01-16", "2025-01-23", "2025-01-30", "2025-02-06", "2025-02-13", "2025-02-20", "2025-02-27", "2025-03-06", "2025-03-13", "2025-03-20", "2025-03-27", "2025-04-03", "2025-04-09", "2025-04-17", "2025-04-24", "2025-04-30", "2025-05-08", "2025-05-15", "2025-05-22", "2025-05-29", "2025-06-05", "2025-06-12", "2025-06-19", "2025-06-26", "2025-07-03", "2025-07-10", "2025-07-17", "2025-07-24", "2025-07-31", "2025-08-07", "2025-08-14", "2025-08-21", "2025-08-28", "2025-09-02", "2025-09-09", "2025-09-16", "2025-09-23", "2025-09-25", "2025-09-30", "2025-10-07", "2025-10-14", "2025-10-20", "2025-10-28", "2025-11-04", "2025-11-11", "2025-11-18", "2025-11-25", "2025-12-02", "2025-12-09", "2025-12-16", "2025-12-23", "2025-12-24", "2025-12-30", "2026-01-06", "2026-01-13", "2026-01-20", "2026-01-27", "2026-02-03"]
Also raising the same as feature request with @Dhan