I heard that there is one, which is it? I couldn’t find it. All I found was Blue Monday (date) on Wikipedia but here I am looking for a day of the week. Is there one?
You actually got it. The day of the working week is Monday. That’s because after a nice weekend, people find it quite boring to go office and start working!
Dictionary.com defines it:
Blue Monday – a Monday regarded as a depressing workday in contrast to the pleasant relaxation of the weekend.
Note that the word blue, informally, here means sad (Sense #3). So, after having holidays for Saturday and Sunday, Monday is always sad to begin the work. 🙂
In fact, you do find articles on how to get rid of Monday Blues. One of the pages I found is on Forbes.