>Daylight saving time (DST; also summer time in British English; see Terminology) is the convention of advancing clocks so that afternoons have more daylight and mornings have less. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn. Modern DST was first proposed in 1907 by the English builder William Willett. Many countries have used it since then; details vary by location and change occasionally.
Unless you are in Arizona or Hawaii, you have been affected in some way, shape or form. If you are a true time nerd, go ahead and read the Wikipedia article. It’s 9,129 words of time goodness.
I do remember when I was working in restaurants that there was always at least 1 person that forgot to change their clocks. This was, of course, back before clocks changed themselves (I own 1 clock that I have to change manually). This was also the person usually in charge of opening things up for the day. So, the whole day was run an hour behind schedule.
I continue to honor that tradition even to this day. Every Spring, my day runs an hour behind.
Or at least it feels like it does.