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Showing posts from December 19, 2008

Winter Solstice on Sunday

Image
Position of the sun in the sky over the course of the day
during the summer and winter solstice days, and both equinox days.

In the Northern Hemisphere, the Winter Solstice occurs on December 21, 2008 at 12:04 UT (Universal Time) - or 04:16 Bermuda local time.

This means that at noon on Sunday the sun will be at its lowest point relative to the southern horizon for the whole year. The angle of the sun will only be 33* South above the horizon - as opposed to June 21st, when it is almost directly overhead, at 83* South.

It will also be the shortest day of the year, with only 10 hours of daylight. The sun will rise at 7:16 am, and set at 5:18 pm - local time

The angle of the sun and the length of the day affects the amount of light available for photosynthesis by hard corals, soft corals, and macroalgae growing on reefs.

Furthermore, since Bermuda is the mos…