sunrise and sunset times

["Robert Read" <>]

The Earth's orbit is elliptical, not circular, and the angular velocity
changes as it orbits the Sun (Kepler's Law).

Sunrise and sunset times for any day and any location are available on the
Auslig website http://www.auslig.gov.au/index.htm.

Robert Read
Alice Springs

Merrilyn Serong

In the weeks prior to the longest
> day (summer solstice, 21 or 22 Dec) the daylight hours (or photoperiod)
> of any given day begin and end earlier by the clock than on a day with
> the same number of daylight hours (same length photoperiod) that falls
> the same number of days after the summer solstice that the given day
> does before the solstice.  I hope that sentence is clear.
> Does anybody know why this is so?
>
> Thanks very much,


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