Daylight Saving Dates
Find when daylight saving starts and ends in a given year.
About Daylight Saving Dates
Daylight saving in the US begins on the second Sunday of March and ends on the first Sunday of November. Knowing the exact switch dates avoids scheduling confusion around the hour that disappears in spring.
Formula
Daylight Saving Dates
US DST: start = second Sunday in March; end = first Sunday in November
- second Sunday
- Sunday that falls between the 8th and 14th of the month
Worked example
With the default values below, Daylight Saving Dates returns DST Starts of March 9, 2025. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Year
- 2,025
Results
- DST Starts
- March 9, 2025
- DST Ends
- November 2, 2025
- DST Days
- 238
Step by step
- 1Values used
- 2Daylight Saving Dates
- 3DST Starts= March 9, 2025
- 4DST Ends= November 2, 2025
- 5DST Days= 238
Assumptions and limits
- The result is derived only from the single input listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to whole numbers, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Daylight Saving Dates calculated?
US DST: start = second Sunday in March; end = first Sunday in November Daylight saving in the US begins on the second Sunday of March and ends on the first Sunday of November.
Why does Daylight Saving Dates matter?
Knowing the exact switch dates avoids scheduling confusion around the hour that disappears in spring.
What values do I need to enter?
This calculator takes 1 input: Year. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.