Step-by-step
- Choose the start date.
- Choose the end date.
- Decide whether the calculation is inclusive or exclusive.
- Calculate the difference using the appropriate date system.
- Check time zones when date-time values rather than dates are involved.
Inclusive versus exclusive dates
Counting both endpoints can produce a different result from measuring the elapsed interval. State which convention your calculation requires.
Dates versus date-times
A date-only calculation is different from calculating elapsed hours between two date-time values. Time zones and daylight-saving transitions can matter for elapsed-time calculations.
Finish the task with DevUtilityKits
Use the relevant online utility, check the result, and continue with your development workflow.
Open Calculators →