Daylight!

Consider the physical aspects of our Solar System that result in the Earth having seasons... how does this gives us variable hours of daylight.

How would i calculate the shortest or longest day for a specific point on earth?

cheers.

 Recognitions: Homework Help Science Advisor Err, what is your level of understanding of the dynamics of the Earth? I mean what do you know about how it travels around the sun? What measurements do you have about velocity of orbit, speed or rotation, tilt of axis etc..?
 Recognitions: Homework Help ever heard of www.google.com ?

Daylight!

 Quote by Zurtex Err, what is your level of understanding of the dynamics of the Earth? I mean what do you know about how it travels around the sun? What measurements do you have about velocity of orbit, speed or rotation, tilt of axis etc..?
i have absolutely no data about any of the prior. what i DO have is various cities locations and the amount of daylight they experienced on the 4th of July.

I should be able to extend these findings to make a generalisation about the hours of daylight for any latitude and longitude.

there should be a relationship that relates the day of the year, the hours of daylight, the latitude and the longitude.

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 Quote by decs i have absolutely no data about any of the prior. what i DO have is various cities locations and the amount of daylight they experienced on the 4th of July. I should be able to extend these findings to make a generalisation about the hours of daylight for any latitude and longitude. there should be a relationship that relates the day of the year, the hours of daylight, the latitude and the longitude.
Yeah, I wouldn't imagine it's all that complex but you need to know a bit about ellipses and spheres.

However by the sounds of it you don't really have the mathematical knowledge to construct a method to work out day light given the latitude and longitude and the date. There are calculators all over the web that will just give an output for you though, like the above poster says, you could just use Google.

 i formula so far is 12+(12/67)*latitude*cos(2pi.t)=hours of sunlight where t=days/365 its ALMOST right ppl...

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 Quote by decs i formula so far is 12+(12/67)*latitude*cos(2pi.t)=hours of sunlight where t=days/365 its ALMOST right ppl...