The sun sets about 2 hours later during the summer than the winter (depending on lattitude). DST adds an extra hour. In other words, 2/3rds of the "longer day"

The sun sets about 2 hours later during the summer than the winter (depending on lattitude). DST adds an extra hour. In other words, 2/3rds of the "longer day" effect is from earth's tilt, and only 1/3rd is from DST. Seems like some people misunderstand this.