Tuesday, February 17, 2004
About time [94]
Our seasons are not all the same length. The orbit of the Earth is an ellipse, not a circle, so different quarters of the orbit take different lengths of time to complete. The Earth also moves faster when nearer to the Sun, ie faster from October to April than from April to October. All this means that Spring (94 days) and Summer (93 days) are a bit longer than Autumn (90 days) and Winter (89 days). Good news - in the Northern hemisphere at least.
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