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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.
9,512 Questions
I wish I knew, I have the entire set, except the months of dec. and july, and I have been unable to find out anything from the bradford exch. on these plates.
I did see, someone with one plate,(the may plate) for sale on ebay for 51.00$
If tom practices his piano 37 minutes a day how much time does he practice in 24 days?
24 x 37 = 888 minutes 60 minutes = 1 hour 888 minutes = (888 / 60) = 14.8 hours = 14hours 48minutes
CE stands for Common Era or Current Era, coinciding with AD (Anno Domini, Latin for "Year of (our) Lord." It is a way of utilizing the current Western calendar without recognizing what is common with this current era. Ironically, it has come to mean the Christian Era, too. This "backronym" is due to the fact our common era is due to the historic event that happened 2012 years ago. It would be like referring to the Nazi era of Germany without mentioning Adolf Hitler or describing the origins of Apple Computers without Steve Jobs. This avoidance of facts is how BC (Before Christ) has been modified to BCE (Before Common Era). this day so yeah its a collage of things
Why are there sixty seconds in a minute?
Ancient Babylonians divided days sexagesimally meaning in fractions of 1/60. They measured days by 6 subdivisions (1/60 x 1/60 x 1/60 etc.) to measure units of time as small as 2 milliseconds. Hellenistic astronomers also divided days sexagesimally but also used a mean hour (1/24).
Please see the related link for the answer. In brief, now we use multiples of 10. The Egyptians used a multiple of 60. This has been adopted since, as far as I believe.
Because somebody decided to call one-sixtieth of a minute, one second. Earlier on, somebody decided to call one-sixtieth of an hour, one minute. Guess why there are exactly twenty-four hours in a day!
It is thought that there are 60 seconds in a minute because we have inherited measures based on 60 (the sexagesimal system) from the Sumerians, who developed it around 2,000 B.C.
The sexagesimal system is used in both astronomical measurements (degrees, minutes and seconds of angle) and time measurements because these are historically connected, from when time was measured by the motion of the sun and the stars.
60 was probably originally used by the Sumerians because it is a number that can be divided many different ways, by 2, 3, 4, 5 and 6, and also by 10, 12, 15, 20 and 30.
24105600 ================= It really depends on which 9 months you are talking about. A month can have anywhere from 28 to 31 days. Different months will have different numbers of seconds.
"133 hours" is equal to: -- 5 days 13 hours -- 7,980 minutes -- 478,800 seconds -- 9 characters
Is noon considered to be 12 AM or 12 PM?
It's neither 12AM nor 12PM. Those are improper terms.
The abbreviations AM and PM stand for Ante Meridiem and Post Meridiem, respectively. The terms ante and post mean before and after. The term meridiem refers to when the sun is at the middle of its arc across the sky.
Nominally the sun is at its meridiem at noon. Since it is *at* its meridiem this is neither before nor after the meridiem. It *is* the meridiem.
Likewise, midnight is neither 12 AM nor 12 PM. It is equally far from both. It is simply 12 midnight.
The military clock is better than the civilian clock for many reasons. One is that eliminates the complexity of specifically accounting for whether a time is before of after midnight. On the military clock noon is read as 1200 hours, and midnight is read as 2400 hours.
