Timestamp diff
Subtract time without surprises.
Compare two offset-aware ISO timestamps. Get a signed duration, exact seconds, milliseconds, and normalized UTC.
to − from
Compare two exact instants
ISO 8601 only. Include Z or an explicit offset such as -04:00 in both values.
Exact difference+1 day, 11 hours, 30 minutes“To” is 1 day, 11 hours, 30 minutes after “From”.
Signed seconds
127800Signed milliseconds
127800000ISO 8601 duration
P1DT11H30MDirection
afterFrom · normalized UTC
2026-08-22T13:00:00.000ZTo · normalized UTC
2026-08-24T00:30:00.000Z