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Why Don't We Use Local Mean Time (LMT) Anymore?

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

What is the Revised Julian Calendar?

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

Why There Actually Are Not 365 Days in a Year?

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

What is Standard Time?

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

What Is the International Date Line for?

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

Are There Any Alternate Time Systems in Place?

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

What is Terrestrial Time?

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

Where Does the Standard Division of Hours and Minutes Come From?

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

Why Do We Use Latitude and Longitude?

The Earth is divided into degrees of longitude and latitude which helps us measure location and time using a single standard.   When used together, longitude and latitude define a specific location through geographical coordinates. These coordinates are what the Global Position System or GPS uses ... read more

How Do Time Zones in Antarctica Work?

Both the north and south poles of the Earth are outside the boundaries of an official time zone, and as such they are considered to be in all time zones. This is because the longitude lines that are used to separate the individual time zones converge at the two poles.   How Does Time Work There?  ... read more


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