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What time will it be
09:30 plus 2 hours 45 minutes is 12:15. 22:00 plus 5 hours is 03:00 the next day.
Add hours and minutes to a clock. An empty box is not turned into zero.
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Why this exists
A shift, a class, and a journey start from a clock and a length.
When midnight is crossed, the line names the day.
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01How to use it
Type the starting clock, then the hours and the minutes. A minus sign subtracts.
The green button fills 09:30, 2 hours, and 45 minutes.
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02What you get
The large time is the clock you land on. The line under it says same day, next day, previous day, or a count of days.
An empty clock stays a dash. A decimal, or a number past 100000, shows the error and a dash.
Entered09:30 + 2 h 45 m
09:30 + 2 h 45 m 12:15 22:00 + 5 h 03:00 00:15 − 60 m 23:15 2.5 — -
03Worth knowing
The clock is 24-hour. 12:15 is that clock's afternoon time, not a claim about another city.
Adding two durations is the time calculator.
Questions
- QDoes 22:00 plus 5 hours stay on the same day?
- ANo. It is 03:00 the next day.
- QWhat if both boxes are empty?
- AThe same clock is shown, and the boxes are not filled with zero.
- QCan I type 2.5 hours?
- ANo. Type 2 hours and 30 minutes. A decimal is an error.
- QDoes an empty clock become the current time?
- ANo. An empty clock stays a dash. The hours-until page is the one that can start from this device.
How this page works it out
This page adds hours and minutes to a clock and reads the time you land on. 09:30 plus 2 hours 45 minutes is 12:15. 22:00 plus 5 hours is 03:00 the next day. 00:15 minus 60 minutes is 23:15 the day before.
Empty hours and minutes add nothing, and the boxes stay empty. A decimal such as 2.5 is an error. A number past 100000 is not calculated.
The time calculator adds durations to each other. This page adds a duration onto a clock. The clock is 24-hour, and it does not claim another city's time. The sum stays in this browser.