today is

Often when you have a day off at the start of the week your perception of which day it is goes a little awry.

I wasn't at work on Monday, I was in London. On Tuesday I was convinced it was Monday. On Wednesday I was convinced it was Tuesday. On Thursday I have no idea what day I thought it was and on Friday I thought it was Thursday again.

I never used to have these problems, maybe I need to drink more.