Moon eclipses the sun with whispy white clouds in the foreground against a darkened, grey sky
Depending on your location this April, the moon will completely eclipse the sun — what's called "duration of totality" — for over 4 minutes.
  • On Monday, millions of Americans can experience a total solar eclipse as it sweeps across the US.
  • NASA says choosing where to watch is important because eclipses rarely occur in the same place twice.
  • Here is a list of the 10 largest US cities in the path of totality. 

On April 8, more than two dozen US cities will plunge into darkness when a total solar eclipse completely blots out the sun.