Legend says that the Codex Gigas, also known as the Devil's Bible, was written by a monk named Herman the Recluse in one night during the 13th century. How long did it actually take to write it?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2025/09/16/s03e37-how-long-did-the-codex-gigas-take-to-write/