A sun dial works by casting a shadow that is determined by the sun's position in the sky. Sun dials come in a variety of styles and shapes. Cheap, mass-produced sun dials often have design flaws that prevent them from accurately showing the time.
A:Official U.S. time from the Master Clock at the U.S. Naval Observatory is posted by zone on the Navy's time service website. This time is used by the Department of Defense and GPS Network. The exact time is also available at the National Institute of Standards and Technology website.
A:You should set clocks ahead at 2 a.m. on the second Sunday in March in most parts of the United States. However, Hawaii, Arizona and several U.S. territories do not participate in Daylight Saving Time.
A:In the United States, daylight saving time takes place on the second Sunday in March at 2:00 a.m. The actual date varies each year. The United States returns to standard time on the first Sunday in November.
A:A week has 10,080 minutes. It is a time unit equal to seven days. A day consists of 24 hours, and an hour in turn consists of 60 minutes. Thus, to find the minutes in a week, multiply 60 by 24, and then multiply the result by 7.
A:Daylight Savings Time in 2015 began on Sunday, March 8 at 2 a.m., at which time the clocks in areas that observe it were set ahead one hour. Daylight Savings Time ends on Sunday, November 1 at 2 a.m. when the clocks in these jurisdictions are turned back one hour.
A:In a 24-hour day, a.m. and p.m. refer to the two 12-hour periods of the day. A.m. refers to the period between 12:00 in the morning and 11:59 in the late morning, whereas p.m. refers to the period between 12:00 midday and 11:59 in the late evening.
A:The time 12 a.m. is also referred to as midnight, and 12 p.m. is referred to as noon. A good trick for remembering this is to think of 12:01 a.m. occurring during the night as well as the minute directly before it.
A:The United States Naval Observatory Master Clock is the official precise time reference for the Department of Defense. As of 2015, the Master Clock is a sophisticated atomic clock system used for navigation, satellites, intelligence and communication. The clock expresses time as Coordinated Universal Time.
A:To read a military clock, use the 24-hour time system to indicate the hour of the day. The seconds and minutes indicated by the clock are the same as that in a clock following the 12-hour time system.
A:In the United States the action of "springing forward" occurs on the second Sunday in March. This day begins daylight saving time in most areas of the United States, when clocks are moved forward 1 hour.
A:Good resources that convert 12-hour standard clocks to 24-hour military time include CalculateHours.com, OnlineClock.net and EasySurf.cc. In addition to providing calculators that convert standard and military time, CalculateHours.com and OnlineClock.net also provide explanations of military time and give instructions so that users can convert to military time themselves.
A:A military time conversion table demonstrates how to translate the civilian 12-hour clock into the military 24-hour clock. Typically, these conversion tables are laid out with the traditional "o'clock" hour names on one side and the corresponding military "hundred hour" titles on the other.
A:The simplest way to convert civilian a.m./p.m. time to military time is to add 12 to every hour after 12 p.m. For example, 4 p.m. becomes 1600 hours. All a.m. hours are unchanged but have an "O" prefix and "hundred hour(s)" suffix instead of the typical "o'clock."
A:After the summer solstice, when days are at their longest, each day starts to become shorter by about one minute every three days. However, this process accelerates and decelerates slightly depending on the particular day.
A:Minutes can be written in two ways: agenda-based minutes or reports and informal meeting minutes or summaries. The formats of recording minutes vary according to the nature of the organization or group and by region. Minutes of staff meetings, workshops, seminars and interdepartmental meetings may all follow varied document styles.
A:In areas that practice Daylight Saving Time, or DST, the fall shift returns the clocks to "standard" timekeeping. In the United States, autumn time is standard in name only; since 2007, DST has occupied seven of the 12 months of the year.
A:A 555 timer is an example of an integrated circuit, or an "IC chip." It is an electronic component consisting of a small piece of silicon or other semiconductor material with an electronic circuit built on it.