A second full moon in a calendar month is often called a "blue moon." But Becky and Don Gansauer of Baltimore note that while Spaceweather.com calls tonight's full moon blue, "the calendar on my wall says a full moon will happen on June 1, with another on June 30, making IT the blue moon. Which is correct?" Depends on your time zone. The moon is fully "full" today at 9:04 p.m. EDT. But that's 1:04 a.m. tomorrow in Coordinated Universal (or Greenwich Mean) Time.
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FRANK ROYLANCEThe Baltimore Sun
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