Springing forward into daylight time

Lose an hour of sleep this weekend, gain an hour of evening light for months ahead: Daylight time is back. This year is the 100th anniversary of the general use of setting forward the clocks, though the change has never been without controversy. The time change officially starts Sunday at 2 a. m. local time. The change was initially created to reduced the amount of artificial light used in summer evenings. The change isn’t universally loved. “If you’re getting five to six hours of sleep regularly as an adult instead of what’s recommended — the seven to eight hours — then you’re going to suffer a bit more when you have one less hour of sleep than you would if someone who has more regular sleep scheduling,” said Dr. Reshma Amin, a pediatric respirologist and sleep physician at the Hospital for Sick Children in Toronto.