Hmm, I’d be inclined to think that is a little off. Because if you hand your resignation in on a Monday and give four weeks notice from that moment, then you’re last day should really be a Monday. In my opinion.
The time before last that I resigned, I only had to give one week’s notice and counted it from the Friday I handed in my resignation to the end of business the following Friday. Which is really one week plus a few hours. I saw that as better than one week less a few hours, which is what you’d be effectively doing. Having said that, I doubt many people would be all that bothered if you resigned first thing on a Monday morning.