The meaning of 'working days'

My understanding of ‘working days’ is clearly different to Huel’s understanding of that term.

I’ve just received an email today (Friday) saying ‘your next subscription order of Huel is scheduled to be dispatched in 3 working days’.

According to the subscription order management system, the next one is going to be dispatched on 23 May, i.e. Monday.

By my count, Monday is the next working day from today, in other words 1 working day. No?

That is a fantastic point! I have never noticed this happen before, so thanks for this. I will try to fix this now, so that’s greatly appreciated eldrin