Clock Changes in Amsterdam, Netherlands 1937

May 22, 1937 - Daylight Saving Time Started

When local standard time was about to reach
Saturday, May 22, 1937, 2:00:00 am clocks were turned forward 1 hour to
Saturday, May 22, 1937, 3:00:00 am local daylight time instead.

Sunrise and sunset were about 1 hour later on May 22, 1937 than the day before. There was more light in the evening.

Also called Spring Forward, Summer Time, and Daylight Savings Time.

Jul 1, 1937 - Time Zone Change (NST → NEST) Increased

Double DST – Clocks were turned ahead another hour when DST was already in force (2 hours ahead of standard time).
When local daylight time was about to reach
Thursday, July 1, 1937, 12:00:00 midnight clocks were turned forward 0:00:28 hours to
Thursday, July 1, 1937, 12:00:28 am local daylight time instead.