20 March 2007

Equinox

Today (21 March shortly after midnight in Greenwich Time) is the Spring equinox, when the Sun rises for observers at the North pole and stays up for slightly more than half a year. For all lower latitudes away from the region surrounding the pole, there will be 12 hours of daylight and 12 hours of nighttime. After today, this uniformity will break up rapidly: April 1, there will already be 14 hours of daylight at Sedna ice camp, and by April 14, this increases to 16.5 hours. Compare that to Boston with 12.5 and 13.5 hours, respectively.

What does this mean for Sedna? Sunrise at 6:40, sliding back to 5:20, and sunset at 9, sliding back to 10. Not much opportunity, really, to see the aurora AND get some sleep ...

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