Daylight Saving Time Explained
CGP Grey · Explainer · YouTube title: You Lose an Hour of Sleep to Save $4
Why it's here
HN people link it as the simple go-to explanation of DST and of how irregular time zone rules complicate scheduling.
What it covers
CGP Grey explains the mess of Daylight Saving Time, including its dubious energy savings and the odd cases like Arizona that opt out. It is a short, simple explainer.