Well not having worked for 7 years it does get a bit confumbling
Normally you get cued as to where you are in the week by things like the dustbin emptying (runs a day later this week and next), milkman (didn't deliver last two Wednesdays), football fixtures (well effed up), day time TV schedules (all changed) and shops being empty Mon-Fri as people are at work (they're not)
So it's Thursday as far as I'm concerned