The difference between a.m. and p.m. is in the time of day. The designation a.m. refers to any time that is after midnight and prior to noon. Any time that is between noon and midnight is designated p.m.Continue Reading
The designation a.m., which is short for ante meridiem in Latin, means "before the sun passes the meridian." An example of a.m. usage is 10:00 a.m. The designation p.m. is short for post meridiem in Latin. An example of p.m. usage is 3:00 p.m. Noon refers to 12:00 p.m., and midnight refers to 12:00 a.m.
The U.S. Army uses a 24-hour format to indicate time rather than a 12-hour format, so a.m. and p.m. are not needed.Learn more about Time & Calendars
Create a printable monthly calendar at TimeAndDate.com or CalendarLabs.com. These sites feature online tools for printing custom calendars that include events such as holidays, while CalendarLabs.com features a tool for uploading a custom photo for printing on a calendar.Full Answer >
The latest atomic clock developed by the National Institute of Standard and Technology and the University of Colorado at Boulder is accurate to within one second per 15 billion years, as of April 2015. This accuracy level is three times more accurate than the previous strontium clock developed in 2014.Full Answer >
The year 2014 in the Gregorian calendar was the year of the yang wood horse in the Chinese calendar. This marked it as a year of tumult and high energy, according to experts in Chinese astrology.Full Answer >
A score means 20 years and can more generally refer to any group of 20 items. The word originates from the Old Norse word "skor" or "notch." It is thought to be related to counting large numbers of sheep using a notch on a stick to represent 20.Full Answer >