[BC] Solstice Today

[WFIFeng@aol.com]

In a message dated 12/21/2006 11:25:34 AM Eastern Standard Time, 
harold at hallikainen.com writes:

> By the way, day length seems sinusoidal. Anyone know if it is? Taking the
>  derivative of day length today, we get zero, indicating we're at a
>  relative (and absolute) minimum.

It does seem to be, although a tad "distorted" by the tilt of the Earth's 
axis in relationship to the Sun. 

The sunSET will start getting later almost immediately, starting tomorrow... 
but the sunRISE will not. It will stay pretty much unchanged for almost 2 
weeks... in fact, it will still get about a minute or two *later* over the next 
10-14 days. By the middle-end of the first week of January, sunrise will finally 
start to get earlier. By then, the sunSET will have moved back a good 10-15 
minutes later.

In summer, it's the opposite... the sunRISE changes quickly, but the sunSET 
does not.

Of course, I know this only too well, working for a Daytimer and all.

Whoever it was that wrote that song, "Sunrise, Sunset..." must have been 
thinking of Daytimers. ;)

Willie...