Math and Arithmetic

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Time Zones

Algebra

Length and Distance

Units of Measure

Clocks and Watches

Sunrise and Sunset Times

# Time

## This category is for questions about the methods humans go about measuring the passage of time. You can also find questions about converting one unit of time to another.

### How many hours are in a year?

The year being defined as 31,556,925.9747 seconds, there are
8765.8127 hours of 3600 seconds each in one year.
By multiplication of days , there are 8766 hours in a
Julian year of 365.25 days. (Excess hours form leap days). The
solar year consists of 365.256366 days, and a siderial day is
currently 23 hours 56 min 4.1 sec.
But for calendar purposes there are 8760 hours in 365
days, and 8784 in leap years.
---
A year is not exactly 365 days - that...

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### How many milliseconds are there in a second?

1,000

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### 1400 hours in military time is what time in normal time?

1400 is the military and European version of 2:00 p.m.. The
military and Europe operate on a 24-hour clock, where noon-onward
is expressed as 1200-1300-1400, etc. '1400' is US Marine Corp
phrasing, whereas the Army and Air Force would say '1400
hours.'
...

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### How many hours is 8.30 am to 5 pm?

8 and 1/2

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