It’s been a thing for a very long time, like even back in the 90s I remember it.

The difference was it was mostly between people who were both working. At least blue collar, and usually people who had a blurry line on when they were done with work on any given day for various reasons like having a very small business or side hustle

Like, there was an understood “work” in front of the “day”. Basically “I hope you get through this without much extra bullshit”.

That’s still how I hear it, but probably not how most mean it.

I didn’t really notice it spreading, but pandemic and zoom may have made it more common as people worked where they lived and needed to delinerate free time from work time.