This article explains why “teaching grammar out of context doesn’t work,” and provides some alternative approaches that studies have shown to be more effective.
You’ve already lost an hour of sleep this week, but now prepare to lose something else: the -s at the end of “savings” in “daylight savings time.”
Despite the fact that almost everyone I know says “Daylight Savings Time” (with an -s), the general consensus among grammarians, dictionary writers, and other guardians of the English language is that there is no -s.
The proper way to say and write the phrase is “daylight saving time” (or if you love hyphens for some reason, “daylight-saving time” is also acceptable).
A little grammar lesson from Glove & Boots.