Daylight Saving Time (DST) starts at different dates depending on the region:

• In most of the United States, DST starts on the second Sunday in March at 2:00 AM local standard time, when clocks are set forward one hour. For 2025, this occurred on March 9.

• In Germany and most of Europe, DST (also called Summer Time) begins on the last Sunday in March at 2:00 AM, when clocks are set forward one hour. For 2025, this date is March 30.

So, for example:

• US DST start in 2025: March 9, 2:00 AM (clocks forward to 3:00 AM)
• Europe/Germany DST start in 2025: March 30, 2:00 AM (clocks forward to 3:00 AM)

These conventions generally apply annually with minor legislative exceptions. The start of DST means more daylight in the evening hours.