## What is a symbol for time?

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Symbols for physical quantities and their international unitssymbolquantityunitttime, durationsecondTperiod, periodic timesecondτtime constantsecondffrequencyhertz20

## What is the minute?

noun. a period of time equal to 60 seconds; one sixtieth of an hour. Also called: minute of arc a unit of angular measure equal to one sixtieth of a degreeSymbol: ′ any very short period of time; moment.

## Who invented minutes?

THE DIVISION of the hour into 60 minutes and of the minute into 60 seconds comes from the Babylonians who used a sexagesimal (counting in 60s) system for mathematics and astronomy. They derived their number system from the Sumerians who were using it as early as 3500 BC.

## How many minutes does a year have?

An average Gregorian year is 365.2425 days (52.1775 weeks, 8765.82 hours, 525949.2 minutes or seconds). For this calendar, a common year is 365 days (8760 hours, 525600 minutes or seconds), and a leap year is 366 days (8784 hours, 527040 minutes or seconds).

## How many minutes do we live for?

To find out how much time you have left if you are an average man or woman, take your age and multiply it by 365. Then, subtract it from 27,375 days. For example, if you are 25 years old, you have 18,250 days to live (27,375 days – 9,125 (because 365 x 25 = 9,125)).

527040 minutes

Hipparchus

## Who decided how many hours in a day?

The 24-hour day concept comes from the ancient Egyptians. They divided the day into 10 hours with devices like shadow clocks and then added one hour at each end (one for twilight and one at the end of the day).