DST Start End Date Calculator
Hours gained or lost around a clock change.
Work It Out And Get Clear Answers
Hours gained or lost around a clock change.
DST Start End Date Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Press Calculate to see the result.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
DST Start End Date Quick Guide
Typical values for reference.
| Days in DST period | Offset (hours) | Extra daylight hours |
|---|---|---|
| 238 | 1 | 238 hours |
| 119 | 1 | 119 hours |
| 476 | 1 | 476 hours |
| 238 | 0.5 | 119 hours |
| 238 | 2 | 476 hours |
| Rule of thumb: check your inputs, use the result as a guide and round sensibly. | ||
DST Start End Date FAQ
Answers to common questions about this calculator.
Illustrative only.
It uses the default inputs shown and the formula described above. Change any value and press Calculate to see how the result moves.
It is an estimate based on the inputs you enter. Check real quotes, labels, product data or official guidance for important decisions.
Yes. Replace each input with your own figures and press Calculate to update the result.