article_snippet.sent: Pacific Time (7:58 a.m. ET)
article_snippet.sent: The event started at 3:16 a.m.
article_snippet.sent: The first was April 15, 2014, and the second was October 23, 2014.
article_snippet.sent: NASA predicts the next one will come September 28.
article_snippet.sent: Share your photos with CNN iReport.