Learn

You’ve heard the phrase ‘once in a blue moon’ before, right? It’s a phrase that is used to describe something that rarely happens, or doesn’t happen often. One could even go so far to say it describes something rare or unheard of.   A lot of people sure use the term, but what does it mean? What is... read more

An atomic clock is a device that measures time using the microwave signal emitted by atoms – or the electrons in atoms – when they change energy levels.   Did you know atomic clocks only have an error of 1 second in a span of about one-hundred million years? This makes them one of the most accurat... read more

Did you know that by using Local Mean Time (LMT) you can calculate the time of day in relation to the current solar time?   Have trouble understanding that? Don’t worry, we’ll break it down into simpler terms.   What Is Local Mean Time (LMT)?   Local mean time is a timekeeping method that fact... read more

Did you know that the Revised Julian calendar is more accurate than the Gregorian calendar we use today?   It's true, and it actually happens to be one of the most accurate calendar systems ever created.   How Does the Revised Julian Calendar Work?   Like the Gregorian calendar, the Revised Ju... read more

Did you know that a year is never actually 365 days long?   A tropical year - also called many other things - is approximately 365 days, 5 hours, 48 minutes, and 45 seconds long. This equates to 365.242189 days.   Tropical years are measured from either an equinox or solstice to the next. You ca... read more

Did you know when you are looking at a location observing Standard Time this means that it is the regular local time of that particular region? Standard Time is used outside of Daylight Saving Time and often comes during the winter.   Even though several countries make time changes for Daylight Sa... read more

Ever heard of the International Date Line or IDL? What about the Greenwich Meridian, or Prime Meridian as it's called?   The International Date Line is an imaginary boundary that runs from east to west along the 180-degree meridian. Depending on which direction you travel - east or west - it's exa... read more

Besides the most common time standards – such as Coordinated Universal Time (UTC) – there are other time systems used.   Terrestrial Time is one example, as astronomers use it to calculate the position and distance of an object in relation to the Earth’s center and rotation.    There are other t... read more

If you’ve ever heard of Terrestrial Time you might be confused as to why it exists and what it is used for.   What Is Terrestrial Time Used For?   Terrestrial Time (TT) or Terrestrial Dynamical Time – as it used to be called – has been adopted by astronomers to calculate the location or planetar... read more

A minute is divided into 60 seconds, while an hour is divided into 60 minutes. These numbers seem to be a far cry from the 24 and 12 hour time increments we use alongside them.     So, where did the 60 minute division come from, and why do we still use it today?    The Ancient Babylonians Used ... read more

Article Count : 128

Page 11 of 13