It's the type of day we're having if it's very cloudy with little or no sun showing
[DOC] [TLE] Total Solar Eclipse 2017 - FAQ - Eclipse2017.org [PAR] Essentially, it's when the moon moves right in front of the sun, covering it ... as "
eclipse glasses") whenever the sun isn't completely eclipsed), and shows you ... 
eye protection to watch these types of eclipses, and you're right - it's not very 
exciting.