Friday

Friday was a day of the week. According to Rose Tyler, it was considered unlucky. (COMIC: Triskaidekaphobia)

Hex would go to the White Rabbit with "the lads" every Friday before his TARDIS travels. (AUDIO: Project: Destiny)

Atif Ghosh mysteriously disappeared on a Friday in the department store Sanderson & Grainger. He actually was taken by the Cybermen and converted. (TV: Closing Time)