Convert 20 Hour to Second: 20 Hour in Second

20 Hour = 72000 Second

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How to convert 20 Hour to Second?

20 Hour equal 72000 Second.

Every 1 Hour = 3600 Second and so, 20 Hour = 20 multiplied by 3600 = 72000 Second.

Hour

What is the hour?

The hour is a unit of time. It can be symbolized as hr. It equals 1/24 of a day. It also can be defined as 3600 seconds or 60 minutes.

Time can be measured according to two schemes:

1. 24-hour time scheme which starts and ends at midnight.
2. Two 12-hr segments per mean solar day ( A.M and P.M).

The first scheme is the most common scheme that is used by engineers and astronomers

Second

What is the second?

The second is an important unit of time. It is the main unit of time in the SI system of units. It can be defined as the time it takes an electromagnetic field to propagate through 3 x 10 ⁵ km of vacuum.

One solar day has 86,400 seconds. There are 60 second per minute.

Second is not small and specific enough to be used by scientists and engineers so smaller units were derived such as:

• One millisecond which equals 10 ^-3 s.
• One microsecond which equals 10 ^-6 s.
• One nanosecond which equals 10 ^-9 s.
• One picosecond which equals 10 ^-12 s.

Hour to Second Conversions Table

Print Table

10 Hour = 36000 Second
11 Hour = 39600 Second
12 Hour = 43200 Second
13 Hour = 46800 Second
14 Hour = 50400 Second
15 Hour = 54000 Second
16 Hour = 57600 Second
17 Hour = 61200 Second
18 Hour = 64800 Second
19 Hour = 68400 Second
20 Hour = 72000 Second
21 Hour = 75600 Second
22 Hour = 79200 Second
23 Hour = 82800 Second
24 Hour = 86400 Second
25 Hour = 90000 Second
26 Hour = 93600 Second
27 Hour = 97200 Second
28 Hour = 100800 Second
29 Hour = 104400 Second
30 Hour = 108000 Second