People say how Mondays suck, but for me what really sucks is Tuesday tbh.
On Mondays it's the day you get back to doing things, so I at least get some energy of knowing I have some work to do, it's an alright day. Then it's Tuesday, the day when the energy already ends, the monotonous nature of weekdays hits again and you still have a long time before any meaningful thing you want to do.
It's not that it's a day where bad things happen, but that it's the most empty-feeling one that leaves me the most depressed and asking why are we here just to suffer.
Wednesday is not that bad because of the "you're halfway there", and the last two are good because of the anticipation.