It's frustrating that the article never fully separates 'part of day' from 'time of day'. That is, sometimes we want to know if it's morning or mid-day or night

It's frustrating that the article never fully separates 'part of day' from 'time of day'. That is, sometimes we want to know if it's morning or mid-day or night, and other times we want to synchronize at specifically 1:00. These are different things and time zones only help in superficial, inconsistent, and misleading ways (as mentioned in the piece). There are replies on the page that discuss this point.