All eyes will be on the sky on April 8, as millions of people across America will be hoping to catch a glimpse of one of the biggest solar eclipses in decades as the moon temporarily turns daylight to darkness. Sky watchers in parts of 15 states criss-crossing the nation will get the best view of this rare spectacle, because they will be in the so-called “path of totality” — a 115-mile-wide zone where the moon will completely block the afternoon sun for 2 to 4 minutes. People in other states will still be able to witness a memorable event on April 8, with a partial eclipse occurring. But befor…