Tag Archives: time

DYK: What is a Leap Year?

A leap year has 366 days, as opposed to a common year, which has 365. Nearly every 4 years is a Leap Year, and we add a Leap Day, an extra – or intercalary – day on February 29.

When is the next Leap Year?

The next Leap Year is 2016 – this year, so the next Leap Day falls on February 29, 2016. (The last Leap Day was on February 29, 2012.)

Why do we have Leap Years?

Leap Years are needed to keep our modern day Gregorian Calendar in alignment with the Earth’s revolutions around the sun. It takes the Earth Continue reading DYK: What is a Leap Year?

Did you know: Who Divided The Day Into 24 Hours?

Why do we have twenty four hours in a day–as oppose to twenty, or twelve, or any other division of time? To uncover the mystery of the twenty-four hour day we need to take a trip back to ancient Egypt.

While many cultures around the world use a base-10 system (largely in part because they began their exploration of mathematics by counting their ten fingers), ancient Egyptians used a base-12 system. Instead of counting their individual digits, Egyptians instead counted the knuckles of each each finger using their thumbs as pointers (four fingers on each hand, three knuckles per hand, twelve total units). Continue reading Did you know: Who Divided The Day Into 24 Hours?

Daylight Savings Time or Daylight Saving Time

Daylight Saving Time (DST) is often misspelled “Daylight Savings”, with an “s” at the end. Other common variations are “Summer Time”and “Daylight-Saving Time”.

Setting our clocks one hour forward in the spring is often referred to as “Daylight Savings Time” even though “Daylight Saving Time” is the correct spelling. Continue reading Daylight Savings Time or Daylight Saving Time

Did you know: Which Planet’s Days Are Longer Than Its Years?

In the family of planets that make up our solar system, Venus is a peculiarity among peculiarities. The roughly Earth-sized but scorching planet has an average surface temperature of 462C (864F) and an atmosphere composed almost entirely (96.5%) of carbon dioxide.

Venus

As far as planetary extremes go, Continue reading Did you know: Which Planet’s Days Are Longer Than Its Years?