Navigate directly to the archived snapshot of 'rt.live' from 21 April 2020, 20:10:55 UTC, on archive.vn. Once on this specific historical page, identify and state the 'Effective Reproduction Number (Rt)' for 'Alaska' on that date.
Navigate to 'https://archive.vn/20200421201055/https://rt.live/' Locate the 'Alaska' section on the page. Identify and extract the 'Effective Reproduction Number (Rt)' value displayed for Alaska. State the Rt value for Alaska on this specific date.
Successfully navigate to the archived page 'https://archive.vn/20200421201055/https://rt.live/'. Correctly identify the 'Effective Reproduction Number (Rt)' for 'Alaska' on that specific page. State the Rt value for Alaska as '0.43'.