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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
midnight starts at 12:00am (and ends at 5:00am). afternoon ends at 11:59pm.
Are seconds part of the metric system?
Seconds are not part of the metric system, they are a unit of time measurement. The metric system is based on the meter, kilogram, and second as the base units for length, mass, and time respectively.
How long is a month on the Moon?
a month is a unit of time so a month on the moon would be as long as a month anywhere else
in any case a couple of weeks would be more than enough
What nation has the sunrise and sunset at the same time?
There is no nation where the sunrise and sunset occur at the same time. Sunrise and sunset happen at different times due to the Earth's rotation on its axis.
What time is sunset in fairfield ct on October 23 2009?
The sunset time in Fairfield, CT on October 23, 2009, was at approximately 6:05 PM local time. Sunset times can vary depending on your exact location within the city.
Sundials work by using the sun's position to cast a shadow onto a marked surface, such as a calibrated plate or ground. As the sun moves across the sky, the shadow changes, allowing people to tell time based on the position of the shadow in relation to the markings. The angle of the shadow indicates the time of day.
What was the week day on 28 June 1491?
If that is a Gregorian date, it's a Sunday. However, the Gregorian calendar did not yet exist in 1491, so it might be a Julian date, which would make it a Tuesday.
12 am is called midnight because it is the point at which 12 hours have passed since noon (midday) and the start of a new day. The term "midnight" signifies the middle point of the night, with "mid" meaning middle and "night" referring to the time of day when it is dark.
Night typically starts around sunset, which is when the sky begins to darken and the sun is no longer visible. Night officially begins when the sun has fully set and darkness settles in. This time can vary depending on your location and the time of year.
Post Meridiem is PM. It is Latin for "after noon". For example, 1:30 PM.
Post Meridian is a typo.
A gigayear is equivalent to one billion years. This means that a gigayear is a much larger unit of time compared to a regular year. To put it into perspective, there are one billion years in a gigayear, making it a significantly longer period of time.
What term would mean 1 billion years?
We'd probably use the term 1 gigayear to mean 1 billion years (in the U.S.). The prefix "giga" means 1,000,000,000 or, if you prefer, 106 units of something. The gigayear is a billion years, just the the gigaHertz is a billion Hertz (or cycles per second). Also note that we use a "big" G to represent giga. A Gyear is a gigayear or a billion years.
Many consider an Eon to be a billion years
Who invented the first chronometer?
John Harrison is credited with inventing the first marine chronometer in the mid-18th century. His invention greatly improved navigation at sea by providing an accurate way to determine longitude.
What time was sunset in NY on September 27 2008?
Sunset was 6:47 pm ET on September 27 2008 in New York.
A year is defined as the time it takes for the Earth to complete one orbit around the Sun, which is approximately 365.25 days. This is why we have leap years every four years to account for the extra quarter day.
Who used the sundial or uses it still?
people still use sundial. they also use them in gardens as garden features for more info on sundials visit the site below it gives heaps of info!!! http://en.wikipedia.org/wiki/Sundial people still use sundial. they also use them in gardens as garden features for more info on sundials visit the site below it gives heaps of info!!! http://en.wikipedia.org/wiki/Sundial
How to convert kilometers per second into parsecs per year?
Your 1 kilometer equals 3.24077649 x 10-14 parsecs. And your second equals 3.16887646 x 10-8 years. Converting kilometers/second to parsecs/year involves multiplying by 3.24077649 x 10-14 and dividing by 3.16887646 x 10-8 to get your answer. Or do that bit of math in advance and then just multiply by 1.022689439 x 10-6 to get your answer. Make sure you have your beginning figure in km per one second. Your answer will appear in parsecs per one year, or just parsecs per year.
How many miliseconds are in a year?
Correct spelling is 'millisecond'
There are 31556925993.6 milliseconds in a regular year.
How do you read time on a sun dial?
To read time on a sundial, note where the shadow falls on the dial. The time is indicated by the position of the shadow on the numerals or marks that correspond to the current time. Sundials work by tracking the movement of the sun throughout the day and are most accurate when the sun is directly overhead.
What are the twilight hours in Florida?
The twilight hours of any given location are subject to change depending on the time of year; twilight hours during the winter will be different compared to twilight hours during the summer. On average, the summer twilight hours in Florida tend to be between the hours of 5:15am to 6:45am in the morning and 8:20pm to 9:50pm in the evening.
What are disadvantages of using a candle clock?
It cannot be used to tell the time of the day. It can only be used to tell the time interval that has passed. And if the flame is blown out, it doesn't work at all.
