Primary source
- 15 U.S.C. § 260a — Advancement of time or changeover dates (law.cornell.edu)
- 49 CFR 71.2 — Annual advancement of standard time (ecfr.gov)
- US DOT — Uniform Time (transportation.gov)
Data transcribed from these sources on: .
Daylight saving time begins 2027: date and what it affects
As of : US daylight saving time begins on Sunday, March 14, 2027 at 2:00 a.m. local time. Clocks move forward one hour. The date is set by federal law (15 U.S.C. § 260a). A state may exempt itself entirely from the change. It is not a holiday: business days do not change.
Published: · Data updated:
Key facts
- Date: Sunday, March 14, 2027
- Time: 2:00 a.m. local time
- Change: +1 hour
- Rule: second Sunday of March → first Sunday of November (15 U.S.C. § 260a)
What it affects
- The change applies to the official time of each US time zone; the statute lets a state exempt itself entirely from daylight saving time (15 U.S.C. § 260a(a)).
- It is not a holiday: business days do not change, but meeting, flight and broadcast times between the US and Spain shift while the two countries are on different schedules.
Extended data
| Measure | Value | Source |
|---|---|---|
| Date | Sunday, March 14, 2027 | 15 U.S.C. § 260a — Advancement of time or changeover dates |
| Time | 2:00 a.m. local time | 15 U.S.C. § 260a — Advancement of time or changeover dates |
| Change | +1 hora | 49 CFR 71.2 — Annual advancement of standard time |
Formula: begins: second Sunday of March; ends: first Sunday of November (15 U.S.C. § 260a)
Worked example: 2027: Sunday, March 14, 2027 / Sunday, November 7, 2027
Questions
When does daylight saving time begins in the US?
On Sunday, March 14, 2027 at 2:00 a.m. local time.
Who sets the rule?
Federal law: 15 U.S.C. § 260a and 49 CFR 71.2 (Department of Transportation).
Can a state skip the change?
Federal law lets a state exempt itself entirely from daylight saving time by state law (15 U.S.C. § 260a(a)).
Tools using this data
Automated page built from the official sources listed. Dates and rules were checked on the date shown; confirm with the source before relying on them for legal, payroll or travel decisions.