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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.
9,511 Questions
What limitations did the sundial have?
1. Can only tell the time, not the date. 2.Obviously needs sun, not clearly viewable on a cloudy/dark day. 3. Needs to be in a certain position in order to be accurate.
How many seconds in a melinemum?
I was confused at first, unable to decide whether a "melinemum" is the least value
of a function or a spinal X-ray with contrast. Eventually, I guessed that it's intended
to suggest the period of 1,000 years ... a 'millenium'.
1 day = 86,400 seconds
At the present time, the sidereal year is 365.256363004 days. (rounded)
If it stayed constant and never changed, then 1,000 of those would comprise
31,558,149,763.5 seconds (rounded)
Is the Big Hand the Hour Hand?
On a clock, the longer hand is the minute hand and the shorter hand is the hour hand. Also, the especially thin one that moves the fastest is the second hand.
How many minutes are in 10 billion years?
There are 5,256,000,000,000,000 minutes in 10 billion years.
Is 1204 am midnight or the afternoon?
12:04 AM is considered to be midnight because it is the start of a new day. It falls between 12:00 AM (midnight) and 12:59 AM.
What time is it in Michigan when it's 16 o' clock in Moscow?
16:00 MSD = 6 am CST = 7 am CDT = 7 am EST = 8 am EDT
Most of Michigan is in the Eastern Time Zone; counties near the western border of Upper Michigan are in the Central Time Zone. Daylight saving time is observed from mid-March until early November in Michigan and all year in Moscow.
What time is it when both a clocks hand are on twelve and the sun is overhead?
It is noon when both the clock's hands are on twelve and the sun is overhead.
Rotation of the hands of a clock?
The hands of a clock rotate either clockwise or counterclockwise to indicate the time. The minute hand moves 360 degrees in one hour, while the hour hand moves 30 degrees in one hour. The direction of rotation depends on whether the time is increasing or decreasing.
Night time typically starts around sunset, which is when the sun goes below the horizon. This varies depending on your location and the time of year. Night time generally continues until sunrise the following day.
12:00 pm (or noon) is midday, while 12:00 am (or midnight) is the start of the new day.
'eve' is the 'night before' - as in Christmas eve is the night before Christmas. It is also in evening which is the first part of night. Thus 'eve' refers to night time.
An eon is the longest geologic time period, typically lasting billions of years. It is subdivided into eras, which are further divided into periods, epochs, and ages.
When is sunset in Spring Texas on March 22 2009?
The time of sunrise and sunset is very dependent on the precise location and the date in question.
You can calculate the time of sunrise and sunset easily by visiting the United States Naval Observatory web site's Sunrise & Sunset calculator. You will need the date, city and state for US locations, or the date, latitude, longitude and time zone for any other locations in the world.
The site is
http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-day
You can also calculate the times of sunrise and sunset for one year at a given location at the site:
http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-year
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The following information is provided for Spring Valley, Harris County, Texas (longitude W95.5, latitude N29.8): Sunday
22 March 2009 Central Daylight Time
SUN
Begin civil twilight 6:59 a.m.
Sunrise 7:23 a.m.
Sun transit 1:29 p.m.
Sunset 7:35 p.m.
End civil twilight 7:59 p.m.
MOON
Moonset 3:07 p.m. on preceding day
Moonrise 5:00 a.m.
Moon transit 10:29 a.m.
Moonset 4:04 p.m.
Moonrise 5:31 a.m. on following day
Phase of the Moon on 22 March: waning crescent with 16% of the Moon's visible disk illuminated. New Moon on 26 March 2009 at 11:07 a.m. Central Daylight Time.
How accurate in seconds is an atomic clock in 1.7 million years?
An atomic clock is accurate to within one second over the span of about 100 million years, based on the current technology. Therefore, in 1.7 million years, an atomic clock would likely remain accurate to within a fraction of a second. Understand that this is an estimate and factors like maintenance and improvements in technology could affect this accuracy.
Is there any relation between time and formation of universe?
Yes, time was created at the moment of the Big Bang, making the formation of the universe and the concept of time interconnected. As the universe expands and evolves, time is a crucial parameter for understanding the sequence of events and changes that have occurred since the beginning. The study of cosmology relies on the relationship between time and the formation of the universe to unravel its history and predict its future.
What time is sunset Tucson AZ March 22 2009?
Month Sunrise Sunset January 7:25 5:42 February 7:06 6:10 March 6:34 6:32 April 5:55 6:53 May 5:26 7:15 June 5:17 7:32 July 5:28 7:31 August 5:48 7:08 September 6:08 6:30 October 6:27 5:51 November 6:53 5:23 December 7:17 5:20 Average Monthly Temperatures & Climate Month Avg HighAvg Low Precipitation January 64 F 39 F 0.9 inches February 68 F 41 F 0.7 inches March 73 F 45 F 0.7 inches April 81 F 50 F 0.3 inches May 90 F 58 F 0.2 inches June 100 F 68 F 0.2 inches July 99 F 74 F 2.4 inches August 97 F 72 F 2.2 inches September 93 F 67 F 1.7 inches October 84 F 57 F 1.1 inches November 73 F 46 F 0.7 inches December 64 F 40 F 1.1 inches MonthSunrise Sunset January 7:25 5:42 February 7:06 6:10 March 6:34 6:32 April 5:55 6:53 May 5:26 7:15 June 5:17 7:32 July 5:28 7:31 August 5:48 7:08 September 6:08 6:30 October 6:27 5:51 November 6:53 5:23 December 7:17 5:20 Average Monthly Temperatures & Climate Month Avg High Avg LowPrecipitation January 64 F 39 F 0.9 inches February 68 F 41 F 0.7 inches March 73 F 45 F 0.7 inches April 81 F 50 F 0.3 inches May 90 F 58 F 0.2 inches June 100 F 68 F 0.2 inches July 99 F 74 F 2.4 inches August 97 F 72 F 2.2 inches September 93 F 67 F 1.7 inches October 84 F 57 F 1.1 inches November 73 F 46 F 0.7 inches December 64 F 40 F 1.1 inches Month SunriseSunset January 7:25 5:42 February 7:06 6:10 March 6:34 6:32 April 5:55 6:53 May 5:26 7:15 June 5:17 7:32 July 5:28 7:31 August 5:48 7:08 September 6:08 6:30 October 6:27 5:51 November 6:53 5:23 December 7:17 5:20 Average Monthly Temperatures & Climate Month Avg High Avg Low PrecipitationJanuary 64 F 39 F 0.9 inches February 68 F 41 F 0.7 inches March 73 F 45 F 0.7 inches April 81 F 50 F 0.3 inches May 90 F 58 F 0.2 inches June 100 F 68 F 0.2 inches July 99 F 74 F 2.4 inches August 97 F 72 F 2.2 inches September 93 F 67 F 1.7 inches October 84 F 57 F 1.1 inches November 73 F 46 F 0.7 inches December 64 F 40 F 1.1 inches
2641.667 mins or just over 44 hours. This is a day and 20 hours
Without accounting for leap years and such, we have
60 x 365 x 24 x 60 x 60 = 1892160000 seconds
How does a shadow change during the day?
When you stand in the sun , your body is a virtual sundial.When it is high noon, you will see little or no shadow . As the sun goes down , your shadow will move to the right , and act like the little hand on the face of a clock.In the morning , you will see your shadow on your left [ keep your back to the sun to see the time ] With practice , you can get pretty accurate.
