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02/21/2012 06:58:35 AM · #1 |
It only come by every four years, sometimes eight years. Why not have a 24-hour speed challenge where your photograph has to be taken on February 29th.
The subject of your photo should be about "Leap".
FYI: Years that are evenly divisible by 100 do not contain a leap day, with the exception of years that are evenly divisible by 400, which do contain a leap day; thus 1900 did not contain a leap day while 2000 did.
Message edited by author 2012-02-21 06:59:01. |
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02/21/2012 07:40:08 AM · #2 |
...because the duration of a solar year is slightly less than 365.25 days. The Gregorian calendar was designed to keep the vernal equinox on or close to March 21, so that the date of Easter (celebrated on the Sunday after the 14th day of the Moon—i.e. a full moon—that falls on or after March 21) remains correct with respect to the vernal equinox. The vernal equinox year is about 365.242374 days long (and increasing).
So, my suggestion for a possible 24-hour speed challenge is "Running out of time."
Message edited by author 2012-02-21 07:40:50. |
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02/21/2012 07:46:41 AM · #3 |
| Well we did hav a Time challenge not too long ago. |
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02/21/2012 08:55:35 AM · #4 |
I wasn't sp sure about the easter thing. Here is what wikipedia says.
[quote] The leap day was introduced as part of the Julian reform. The day following the Terminalia (February 23) was doubled, forming the "bis sextum"—literally 'double sixth', since February 24 was 'the sixth day before the Kalends of March' using Roman inclusive counting (March 1 was the 'first day'). Although exceptions exist, the first day of the bis sextum (February 24) was usually regarded as the intercalated or "bissextile" day since the third century.[1] February 29 came to be regarded as the leap day when the Roman system of numbering days was replaced by sequential numbering in the late Middle Ages./quote] |
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