Time between two dates and times
Pick the start and the end (date and time), then the time zone those times belong to.
Result
23 hTime elapsed
- In hours
- 23
- In minutes
- 1,380
- Days on the calendar
- 1
- A clock change happens in between: it counts for 60 min.
Inputs
- Start date
- 2026-03-28
- Start time
- 12:00
- End date
- 2026-03-29
- End time
- 12:00
- Time zone
- Europe / Paris
How it is calculated
Each date and time is turned into an exact moment (UTC) with the zone’s rules.
Result
Time elapsed
- In hours
- 23
- In minutes
- 1,380
- Days on the calendar
- 1
How it is calculated
- Each date and time is turned into an exact moment (UTC) with the zone’s rules.
- Duration = end moment − start moment.
- It is not always calendar days × 24 h: a clock change adds or removes 1 h.
Example
From 28 March 2026 at 12:00 to 29 March 2026 at 12:00 in Paris: 1 calendar day, but 23 real hours.
Good to know
- Leap seconds are not counted.
- Both times are read in the same time zone.
When to use it
- Measure the real time between appointments or events, including periods when the clocks change.
Frequently asked questions
Why can the elapsed time differ from calendar days multiplied by 24 hours?
A daylight-saving clock change can add or remove an hour between the two moments.
Which time zone should I choose?
Choose the zone in which the entered start and end times are meant to occur.
How are missing or repeated local times handled?
A nonexistent time during the spring change is moved forward; when a time occurs twice, the first occurrence is used.