Layover Time Checker
Subtract actual instants using browser IANA data. Repeated times use your earlier/later choice; nonexistent times are rejected. Years 0001–9999, precision through milliseconds. Optional empty durations are omitted (zero deduction). No airport or airline minimum is supplied.
Enter both local times, zones and repeated-time choices. Minute inputs have no numeric upper cap; require finite, nonnegative decimal notation of at most400 characters, without exponents. Nonzero decimals that underflow to zero in the browser number range are rejected. Reports use exact decimals or numerator/denominator fractions for recurring values.
A QUICK WALKTHROUGH
How to use this tool
- Enter both local times, zones and repeated-time choices. Minute inputs have no numeric upper cap; require finite, nonnegative decimal notation of at most400 characters, without exponents. Nonzero decimals that underflow to zero in the browser number range are rejected. Reports use exact decimals or numerator/denominator fractions for recurring values.
- Enter your own connection, walking and buffer durations; add named scenarios.
- Calculate and copy the complete report; editing clears it.
Formula
Subtract actual instants using browser IANA data. Repeated times use your earlier/later choice; nonexistent times are rejected. Years 0001–9999, precision through milliseconds. Optional empty durations are omitted (zero deduction). No airport or airline minimum is supplied.
GOOD TO KNOW
Common questions
How are DST changes handled?
Exact local matches are required. A skipped time fails; repeated time selects the earlier or later matching instant.
Does a positive margin approve a connection?
No. It only compares your own durations; check the applicable travel requirements independently.