Why are leap years needed?
Leap years are needed to keep our calendar in alignment with the earth’s revolutions around the sun.
Note: The illustration is not to scale.
The vernal equinox is the time when the sun is directly above the Earth’s equator, moving from the southern to the northern hemisphere.
The mean time between two successive vernal equinoxes is called a tropical year–also known as a solar year–and is about 365.2422 days long.
Using a calendar with 365 days every year would result in a loss of 0.2422 days, or almost six hours per year. After 100 years, this calendar would be more than 24 days ahead of the season (tropical year), which is not desirable or accurate. It is desirable to align the calendar with the seasons and to make any difference as insignificant as possible.
By adding a leap year approximately every fourth year, the difference between the calendar and the seasons can be reduced significantly, and the calendar will align with the seasons much more accurately.
(The term “day” is used to mean “solar day”–which is the mean time between two transits of the sun across the meridian of the observer.)
Content taken from http://www.timeanddate.com/date/leapyear.html
Tons of information about time and dates and stuff.
or you hunt around the interwebs long enonugh and something’s going to make you smile…
pure silliness people! nothing to do but shake your head and smile.
I have a new one I’d like to use but a friend asked me to stop saying it. I think it’s quite appropriate under the circumstances. It (less than delicately) explains that people should say what they mean for themselves and stop sending other people to express their concerns. We all know what happens to the messenger!
To quote Bill Cosby’s granddaughter, and the title of his new book – Come on people!
Neuschwanstein Castle, Germany
Yay! This is Tate. She lives in North Carolina with Sarah and Mowgli. She looks like she’s about half Mowgli’s size but I think it’s mostly the hair (or lack thereof)…
This post coulda been about how we asked the waiter to split the $26,41 check at lunch today and one came back as $12.55 and the other was $12.86 but I’m just not sure what the point of that would be – except to continue to shake my head… been doing that all afternoon and still haven’t come up with an explanation… So, I won’t blog about that. Good thing… 🙂
…doesn’t live at my house… She lives in North Carolina with Sarah and “Tate.” Her name is Mowgli… She’s very pretty and very nice and sort of scared of singing/dancing snowmen! Go figure. Tomorrow you’ll meet Tate, then I’ll have to post the video of them and singing/dancing snowman… ttfn…
I took this photo of this wooden church in Kostroma, Russia on a tour in 1994. There were a few wooden structures that has been moved to this site to preserve them… The church was originally near the river so the stilts helped keep the church safe when the river flooded.