Noun
time during which clocks are set one hour ahead of local standard time; widely adopted during summer to provide extra daylight in the evenings
Source: WordNetdaylight-savings time
Don't forget it's daylight savings time. You spring forward, then you fall back. It's like Robert Downey Jr. getting out of bed. David Letterman
This is the weekend we “spring ahead” to Daylight Savings time. Source: Internet