Here we convert 3:59AM Central Standard Time (CST) to Eastern Standard Time (EST).
  
To convert CST to EST, we add one hour to CST to get the following result:
  
3:59AM CST =  
4:59AM EST
  
 
Note that CST and EST are also referred to as Central Time and Eastern Time, or shortened to CT and ET.
  
To more clearly understand how we converted 3:59AM CST to EST, see facts below:
  
CST is GMT -06:00 
EST is GMT -05:00 
CST is one hour behind EST 
EST is one hour ahead of CST. 
  
4:00AM CST to EST 
Go here to see the next time zone conversion on our list.
  
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