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how many seconds in an hours

# how many seconds in an hour

Is time divided into 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 hours? Or is it divided into 360 7 7 7 days? The answer is, in fact, to divide it into 24 hours.

## MANY SECOND

Welcome to 15 hours to seconds, our article which answers the question how many seconds is 15 hours? (Source: 24hourtime.net It may be useful to convert the time in Excel from the standard hours and minutes format to seconds only. In order to do this, there are two main methods. The best method is to sum the formulas HOUR, MINUTE, and SECOND to get the total seconds. The following methods determine how many seconds have elapsed from midnight (12 AM). Both methods have Excel convert time to seconds. (Source:corporatefinanceinstitute.com))

If we take the example time as being 1:40:30 AM and want to figure out how many seconds that is, we can use the following approach. (Source: corporatefinanceinstitute.com)

## DAY

In today's world, the most widely used numeral system is decimal (base 10), a system that probably originated because it made it easy for humans to count using their fingers. The civilizations that first divided the day into smaller parts, however, used different numeral systems, specifically duodecimal (base 12) and sexagesimal (base 60). (Source: www.scientificamerican.com Thanks to documented evidence of the Egyptians' use of sundials, most historians credit them with being the first civilization to divide the day into smaller parts. The first sundials were simply stakes placed in the ground that indicated time by the length and direction of the resulting shadow. As early as 1500 B.C., the Egyptians had developed a more advanced sundial. A T-shaped bar placed in the ground, this instrument was calibrated to divide the interval between sunrise and sunset into 12 parts. This division reflected Egypt's use of the duodecimal system--the importance of the number 12 is typically attributed either to the fact that it equals the number of lunar cycles in a year or the number of finger joints on each hand (three in each of the four fingers, excluding the thumb), making it possible to count to 12 with the thumb. The next-generation sundial likely formed the first representation of what we now call the hour. Although the hours within a given day were approximately equal, their lengths varied during the year, with summer hours being much longer than winter hours. (Source:www.scientificamerican.com))

Without artificial light, humans of this time period regarded sunlit and dark periods as two opposing realms rather than as part of the same day. Without the aid of sundials, dividing the dark interval between sunset and sunrise was more complex than dividing the sunlit period. During the era when sundials were first used, however, Egyptian astronomers also first observed a set of 36 stars that divided the circle of the heavens into equal parts. The passage of night could be marked by the appearance of 18 of these stars, three of which were assigned to each of the two twilight periods when the stars were difficult to view. The period of total darkness was marked by the remaining 12 stars, again resulting in 12 divisions of night (another nod to the duodecimal system). During the New Kingdom (1550 to 1070 B.C.), this measuring system was simplified to use a set of 24 stars, 12 of which marked the passage of the night. The clepsydra, or water clock, was also used to record time during the night, and was perhaps the most accurate timekeeping device of the ancient world. The timepiece--a specimen of which, found at the Temple of Ammon in Karnak, dated back to 1400 B.C.--was a vessel with slanted interior surfaces to allow for decreasing water pressure, inscribed with scales that marked the division of the night into 12 parts during various months. (Source: www.scientificamerican.com)

Once both the light and dark hours were divided into 12 parts, the concept of a 24-hour day was in place. The concept of fixed-length hours, however, did not originate until the Hellenistic period, when Greek astronomers began using such a system for their theoretical calculations. Hipparchus, whose work primarily took place between 147 and 127 B.C., proposed dividing the day into 24 equinoctial hours, based on the 12 hours of daylight and 12 hours of darkness observed on equinox days. Despite this suggestion, laypeople continued to use seasonally varying hours for many centuries. (Hours of fixed length became commonplace only after mechanical clocks first appeared in Europe during the 14th century.) (Source: www.scientificamerican.com)

The second was historically defined as 1/86400 of a day in 1832, which was based on the definition of a day as the approximate amount of time required for the Earth to complete a full rotation cycle relative to the sun. (Source: www.unitconverters.net Thanks to the ancient civilizations that defined and preserved the divisions of time, modern society still conceives of a day of 24 hours, an hour of 60 minutes and a minute of 60 seconds. Advances in the science of timekeeping, however, have changed how these units are defined. Seconds were once derived by dividing astronomical events into smaller parts, with the International System of Units (SI) at one time defining the second as a fraction of the mean solar day and later relating it to the tropical year. This changed in 1967, when the second was redefined as the duration of 9,192,631,770 energy transitions of the cesium atom. This recharacterization ushered in the era of atomic timekeeping and Coordinated Universal Time (UTC). (Source:www.scientificamerican.com))

Current use: The hour is used globally as a unit of time. Most forms of employment require a certain number of hours worked per day, with compensation being based on the measured or expected hours worked. Durations starting from 30 minutes (half an hour) are commonly used colloquially. (Source: www.unitconverters.net)

A typical work week is considered to be 40 hours: 8 hours a day for 5 days….Convert 1,000 Hours to Work Weeks. (Source: rehabilitationrobotics.net 50,000 hours is over 297 weeks. 50,000 hours is over 2,083 days. (Source:rehabilitationrobotics.net rIn 8 d there are 192 h . Which is the same to say that 8 days is 192 hours. (Source:ehabilitationrobotics.net)))

The hour was initially established in the ancient Near East as a variable measure of â€‹1⁄12 of the night or daytime. Such seasonal, temporal, or unequal hours varied by season and latitude. The hour was subsequently divided into 60 minutes, each of 60 seconds. Equal or equinoctial hours were taken as â€‹1⁄24 of the day as measured from noon to noon; the minor seasonal variations of this unit were eventually smoothed by making it â€‹1⁄24 of the mean solar day. Since this unit was not constant due to long term variations in the Earth's rotation, the hour was finally separated from the Earth's rotation and defined in terms of the atomic or physical second. (Source: quizzclub.com)

## USE

rehabilitationrobotics.net convertoctopus.com))We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it. PrivaFor quick reference

While using this site, you agree to have read and accepted our Terms of Service and Privacy Policy. (Source: www.checkyourmath.com For quick reference purposes, below is a conversion table that you can use to convert from seconds to hours. (Source:www.checkyourmath.com))purposes, below is the conversion table you can use to convert from hours to seconds (Source:cy PolicyOk (Source:

Step 2 Use the =HOUR(B2) formula to get the number of hours from the time and multiply by 3600 (there are 3600 seconds in every hour) (Source: corporatefinanceinstitute.com This has been CFI’s guide on how to have Excel convert time, using two different methods. To keep learning and developing your skills, we highly recommend our Free Excel Crash Course which will teach you all the foundational skills you need. We highly recommend these free guides below: (Source:corporatefinanceinstitute.com))

This has been CFI’s guide on how to have Excel convert time, using two different methods. To keep learning and developing your skills, we highly recommend our Free Excel Crash Course which will teach you all the foundational skills you need. We highly recommend these free guides below: (Source: corporatefinanceinstitute.com)

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