goes Green for Earth Week 2015 brought to you by Rodale’s Organic Life
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Sunny, windy and warmer
Sunny, breezy and cool
Sunny and warmer
of sunlight, then sets at
of moolight, then sets at
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.