Forward 1 hour
When local standard time was about to reach
Sunday, May 14, 1916, 11:00:00 pm clocks were turned forward 1 hour to
Monday, May 15, 1916, 12:00:00 midnight local daylight time instead.
Sunrise and sunset were about 1 hour later on May 15, 1916 than the day before. There was more light in the evening.
Back 1 hour
When local daylight time was about to reach
Sunday, October 1, 1916, 1:00:00 am clocks were turned backward 1 hour to
Sunday, October 1, 1916, 12:00:00 midnight local standard time instead.
Sunrise and sunset were about 1 hour earlier on Oct 1, 1916 than the day before. There was more light in the morning.
The DST period starts on the last Sunday of March and ends on the last Sunday of October, together with most other European countries.
However, like many other European countries, Sweden first changed its clocks during World War I. The country's initial DST switch was in 1916, just days after Germany had become the world's first country to introduce the measure.
However, DST was abolished again in the year after, and it was not used until 1980, when it was reinstated as a reaction to the oil crisis of 1973.